dnaN

UniProt ID: P0A988
Organism: Escherichia coli K-12
Review Status: COMPLETE
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Gene Description

DnaN is the beta sliding clamp of Escherichia coli. A head-to-tail homodimer encircles DNA and tethers DNA polymerases, increasing processivity and coordinating exchanges between replication and repair enzymes. The clamp loader opens and deposits beta on primed DNA. DnaN also recruits Hda in regulatory inactivation of DnaA and supports translesion synthesis. It is a processivity factor, not a DNA polymerase or proofreading exonuclease.

Existing Annotations Review

GO Term Evidence Action Reason
GO:0003677 DNA binding
IDA
PMID:10924523
The delta subunit of DNA polymerase III holoenzyme serves as...
ACCEPT
Summary: The beta clamp forms a topological ring around DNA and also contacts primed substrates.
Reason: The beta clamp forms a topological ring around DNA and also contacts primed substrates. The broad DNA-binding claim is appropriate because both ssDNA-containing primer junctions and duplex DNA interact with the clamp.
Supporting Evidence:
PMID:10924523
the circular beta sliding clamp facilitates processive DNA replication by tethering the polymerase to primer-template DNA.
GO:0003677 DNA binding
IEA
GO_REF:0000002
ACCEPT
Summary: The beta clamp forms a topological ring around DNA and also contacts primed substrates.
Reason: The beta clamp forms a topological ring around DNA and also contacts primed substrates. The broad DNA-binding claim is appropriate because both ssDNA-containing primer junctions and duplex DNA interact with the clamp.
Supporting Evidence:
PMID:10924523
the circular beta sliding clamp facilitates processive DNA replication by tethering the polymerase to primer-template DNA.
GO:0003887 DNA-directed DNA polymerase activity
IEA
GO_REF:0000002
REMOVE
Summary: The DNA-polymerizing reaction of the holoenzyme is performed by DnaE alpha.
Reason: dnaN performs topological tethering and polymerase processivity; DNA polymerization is catalyzed by DnaE alpha. Holoenzyme nucleotide-incorporation assays and shared EC/Rhea labels do not establish that this individual subunit polymerizes DNA. Its actual molecular role is retained independently.
Supporting Evidence:
PMID:10924523
the circular beta sliding clamp facilitates processive DNA replication by tethering the polymerase to primer-template DNA.
GO:0005515 protein binding
IPI
PMID:11525728
Mechanism of processivity clamp opening by the delta subunit...
REMOVE
Summary: The reported interaction does not specify a useful molecular function.
Reason: This row reports binding of dnaN to UniProtKB:P28630 from PMID:11525728. Bare protein binding is uninformative under the project policy; removing the annotation does not deny the interaction. A partner list alone does not justify transferring the partner’s catalytic activity. Source availability and the distinction between focused interaction assays and large-scale screens are recorded in the reference notes.
Supporting Evidence:
GO:0005515 protein binding
IPI
PMID:14592985
Structural basis for recruitment of translesion DNA polymera...
REMOVE
Summary: The reported interaction does not specify a useful molecular function.
Reason: This row reports binding of dnaN to UniProtKB:Q47155 from PMID:14592985. Bare protein binding is uninformative under the project policy; removing the annotation does not deny the interaction. A partner list alone does not justify transferring the partner’s catalytic activity. Source availability and the distinction between focused interaction assays and large-scale screens are recorded in the reference notes.
Supporting Evidence:
GO:0005515 protein binding
IPI
PMID:15150238
Interaction of the sliding clamp beta-subunit and Hda, a Dna...
REMOVE
Summary: The reported interaction does not specify a useful molecular function.
Reason: This row reports binding of dnaN to UniProtKB:P69931 from PMID:15150238. Bare protein binding is uninformative under the project policy; removing the annotation does not deny the interaction. A partner list alone does not justify transferring the partner’s catalytic activity. Source availability and the distinction between focused interaction assays and large-scale screens are recorded in the reference notes.
Supporting Evidence:
GO:0005515 protein binding
IPI
PMID:15690043
Interaction network containing conserved and essential prote...
REMOVE
Summary: The reported interaction does not specify a useful molecular function.
Reason: This row reports binding of dnaN to UniProtKB:P0A8E7 from PMID:15690043. Bare protein binding is uninformative under the project policy; removing the annotation does not deny the interaction. A partner list alone does not justify transferring the partner’s catalytic activity. Source availability and the distinction between focused interaction assays and large-scale screens are recorded in the reference notes.
Supporting Evidence:
GO:0005515 protein binding
IPI
PMID:15690043
Interaction network containing conserved and essential prote...
REMOVE
Summary: The reported interaction does not specify a useful molecular function.
Reason: This row reports binding of dnaN to UniProtKB:P0AC53 from PMID:15690043. Bare protein binding is uninformative under the project policy; removing the annotation does not deny the interaction. A partner list alone does not justify transferring the partner’s catalytic activity. Source availability and the distinction between focused interaction assays and large-scale screens are recorded in the reference notes.
Supporting Evidence:
GO:0005515 protein binding
IPI
PMID:15690043
Interaction network containing conserved and essential prote...
REMOVE
Summary: The reported interaction does not specify a useful molecular function.
Reason: This row reports binding of dnaN to UniProtKB:P0AFX0 from PMID:15690043. Bare protein binding is uninformative under the project policy; removing the annotation does not deny the interaction. A partner list alone does not justify transferring the partner’s catalytic activity. Source availability and the distinction between focused interaction assays and large-scale screens are recorded in the reference notes.
Supporting Evidence:
GO:0005515 protein binding
IPI
PMID:15690043
Interaction network containing conserved and essential prote...
REMOVE
Summary: The reported interaction does not specify a useful molecular function.
Reason: This row reports binding of dnaN to UniProtKB:P0AG07 from PMID:15690043. Bare protein binding is uninformative under the project policy; removing the annotation does not deny the interaction. A partner list alone does not justify transferring the partner’s catalytic activity. Source availability and the distinction between focused interaction assays and large-scale screens are recorded in the reference notes.
Supporting Evidence:
GO:0005515 protein binding
IPI
PMID:15690043
Interaction network containing conserved and essential prote...
REMOVE
Summary: The reported interaction does not specify a useful molecular function.
Reason: This row reports binding of dnaN to UniProtKB:P69931 from PMID:15690043. Bare protein binding is uninformative under the project policy; removing the annotation does not deny the interaction. A partner list alone does not justify transferring the partner’s catalytic activity. Source availability and the distinction between focused interaction assays and large-scale screens are recorded in the reference notes.
Supporting Evidence:
GO:0005515 protein binding
IPI
PMID:15690043
Interaction network containing conserved and essential prote...
REMOVE
Summary: The reported interaction does not specify a useful molecular function.
Reason: This row reports binding of dnaN to UniProtKB:P77395 from PMID:15690043. Bare protein binding is uninformative under the project policy; removing the annotation does not deny the interaction. A partner list alone does not justify transferring the partner’s catalytic activity. Source availability and the distinction between focused interaction assays and large-scale screens are recorded in the reference notes.
Supporting Evidence:
GO:0005515 protein binding
IPI
PMID:16390442
Two processivity clamp interactions differentially alter the...
REMOVE
Summary: The reported interaction does not specify a useful molecular function.
Reason: This row reports binding of dnaN to UniProtKB:P04152 from PMID:16390442. Bare protein binding is uninformative under the project policy; removing the annotation does not deny the interaction. A partner list alone does not justify transferring the partner’s catalytic activity. Source availability and the distinction between focused interaction assays and large-scale screens are recorded in the reference notes.
Supporting Evidence:
GO:0005515 protein binding
IPI
PMID:16546997
The beta sliding clamp binds to multiple sites within MutL a...
REMOVE
Summary: The reported interaction does not specify a useful molecular function.
Reason: This row reports binding of dnaN to UniProtKB:P23367, UniProtKB:P23909 from PMID:16546997. Bare protein binding is uninformative under the project policy; removing the annotation does not deny the interaction. A partner list alone does not justify transferring the partner’s catalytic activity. Source availability and the distinction between focused interaction assays and large-scale screens are recorded in the reference notes.
Supporting Evidence:
GO:0005515 protein binding
IPI
PMID:19703395
Transposition into replicating DNA occurs through interactio...
REMOVE
Summary: The reported interaction does not specify a useful molecular function.
Reason: This row reports binding of dnaN to UniProtKB:P05845 from PMID:19703395. Bare protein binding is uninformative under the project policy; removing the annotation does not deny the interaction. A partner list alone does not justify transferring the partner’s catalytic activity. Source availability and the distinction between focused interaction assays and large-scale screens are recorded in the reference notes.
Supporting Evidence:
GO:0005515 protein binding
IPI
PMID:19703395
Transposition into replicating DNA occurs through interactio...
REMOVE
Summary: The reported interaction does not specify a useful molecular function.
Reason: This row reports binding of dnaN to UniProtKB:P06710 from PMID:19703395. Bare protein binding is uninformative under the project policy; removing the annotation does not deny the interaction. A partner list alone does not justify transferring the partner’s catalytic activity. Source availability and the distinction between focused interaction assays and large-scale screens are recorded in the reference notes.
Supporting Evidence:
GO:0005515 protein binding
IPI
PMID:19703395
Transposition into replicating DNA occurs through interactio...
REMOVE
Summary: The reported interaction does not specify a useful molecular function.
Reason: This row reports binding of dnaN to UniProtKB:P28630 from PMID:19703395. Bare protein binding is uninformative under the project policy; removing the annotation does not deny the interaction. A partner list alone does not justify transferring the partner’s catalytic activity. Source availability and the distinction between focused interaction assays and large-scale screens are recorded in the reference notes.
Supporting Evidence:
GO:0005515 protein binding
IPI
PMID:2040637
Mechanism of the sliding beta-clamp of DNA polymerase III ho...
MODIFY
Summary: The clamp–polymerase interaction tethers the polymerase to DNA and confers processivity; the specific regulator activity captures the demonstrated functional consequence.
Reason: The clamp–polymerase interaction tethers the polymerase to DNA and confers processivity; the specific regulator activity captures the demonstrated functional consequence.
Supporting Evidence:
PMID:10924523
the circular beta sliding clamp facilitates processive DNA replication by tethering the polymerase to primer-template DNA.
GO:0005515 protein binding
IPI
PMID:21708944
DnaA protein DNA-binding domain binds to Hda protein to prom...
REMOVE
Summary: The reported interaction does not specify a useful molecular function.
Reason: This row reports binding of dnaN to UniProtKB:P69931 from PMID:21708944. Bare protein binding is uninformative under the project policy; removing the annotation does not deny the interaction. A partner list alone does not justify transferring the partner’s catalytic activity. Source availability and the distinction between focused interaction assays and large-scale screens are recorded in the reference notes.
Supporting Evidence:
GO:0005515 protein binding
IPI
PMID:23435564
A direct proofreader-clamp interaction stabilizes the Pol II...
REMOVE
Summary: The reported interaction does not specify a useful molecular function.
Reason: This row reports binding of dnaN to UniProtKB:P03007 from PMID:23435564. Bare protein binding is uninformative under the project policy; removing the annotation does not deny the interaction. A partner list alone does not justify transferring the partner’s catalytic activity. Source availability and the distinction between focused interaction assays and large-scale screens are recorded in the reference notes.
Supporting Evidence:
GO:0005515 protein binding
IPI
PMID:23435564
A direct proofreader-clamp interaction stabilizes the Pol II...
REMOVE
Summary: The reported interaction does not specify a useful molecular function.
Reason: This row reports binding of dnaN to UniProtKB:P10443 from PMID:23435564. Bare protein binding is uninformative under the project policy; removing the annotation does not deny the interaction. A partner list alone does not justify transferring the partner’s catalytic activity. Source availability and the distinction between focused interaction assays and large-scale screens are recorded in the reference notes.
Supporting Evidence:
GO:0005515 protein binding
IPI
PMID:23549287
Architecture of the Pol III-clamp-exonuclease complex reveal...
REMOVE
Summary: The reported interaction does not specify a useful molecular function.
Reason: This row reports binding of dnaN to UniProtKB:P03007 from PMID:23549287. Bare protein binding is uninformative under the project policy; removing the annotation does not deny the interaction. A partner list alone does not justify transferring the partner’s catalytic activity. Source availability and the distinction between focused interaction assays and large-scale screens are recorded in the reference notes.
Supporting Evidence:
GO:0005515 protein binding
IPI
PMID:23549287
Architecture of the Pol III-clamp-exonuclease complex reveal...
REMOVE
Summary: The reported interaction does not specify a useful molecular function.
Reason: This row reports binding of dnaN to UniProtKB:P10443 from PMID:23549287. Bare protein binding is uninformative under the project policy; removing the annotation does not deny the interaction. A partner list alone does not justify transferring the partner’s catalytic activity. Source availability and the distinction between focused interaction assays and large-scale screens are recorded in the reference notes.
Supporting Evidence:
GO:0005515 protein binding
IPI
PMID:23549287
Architecture of the Pol III-clamp-exonuclease complex reveal...
REMOVE
Summary: The reported interaction does not specify a useful molecular function.
Reason: This row reports binding of dnaN to UniProtKB:Q47155 from PMID:23549287. Bare protein binding is uninformative under the project policy; removing the annotation does not deny the interaction. A partner list alone does not justify transferring the partner’s catalytic activity. Source availability and the distinction between focused interaction assays and large-scale screens are recorded in the reference notes.
Supporting Evidence:
GO:0005515 protein binding
IPI
PMID:23994470
A replicase clamp-binding dynamin-like protein promotes colo...
REMOVE
Summary: The reported interaction does not specify a useful molecular function.
Reason: This row reports binding of dnaN to UniProtKB:P0DM85 from PMID:23994470. Bare protein binding is uninformative under the project policy; removing the annotation does not deny the interaction. A partner list alone does not justify transferring the partner’s catalytic activity. Source availability and the distinction between focused interaction assays and large-scale screens are recorded in the reference notes.
Supporting Evidence:
GO:0005515 protein binding
IPI
PMID:24561554
The binary protein-protein interaction landscape of Escheric...
REMOVE
Summary: The reported interaction does not specify a useful molecular function.
Reason: This row reports binding of dnaN to UniProtKB:P0AG07 from PMID:24561554. Bare protein binding is uninformative under the project policy; removing the annotation does not deny the interaction. A partner list alone does not justify transferring the partner’s catalytic activity. Source availability and the distinction between focused interaction assays and large-scale screens are recorded in the reference notes.
Supporting Evidence:
GO:0005515 protein binding
IPI
PMID:24561554
The binary protein-protein interaction landscape of Escheric...
REMOVE
Summary: The reported interaction does not specify a useful molecular function.
Reason: This row reports binding of dnaN to UniProtKB:P10443 from PMID:24561554. Bare protein binding is uninformative under the project policy; removing the annotation does not deny the interaction. A partner list alone does not justify transferring the partner’s catalytic activity. Source availability and the distinction between focused interaction assays and large-scale screens are recorded in the reference notes.
Supporting Evidence:
GO:0005515 protein binding
IPI
PMID:24561554
The binary protein-protein interaction landscape of Escheric...
REMOVE
Summary: The reported interaction does not specify a useful molecular function.
Reason: This row reports binding of dnaN to UniProtKB:P28630 from PMID:24561554. Bare protein binding is uninformative under the project policy; removing the annotation does not deny the interaction. A partner list alone does not justify transferring the partner’s catalytic activity. Source availability and the distinction between focused interaction assays and large-scale screens are recorded in the reference notes.
Supporting Evidence:
GO:0005515 protein binding
IPI
PMID:24561554
The binary protein-protein interaction landscape of Escheric...
REMOVE
Summary: The reported interaction does not specify a useful molecular function.
Reason: This row reports binding of dnaN to UniProtKB:P69931 from PMID:24561554. Bare protein binding is uninformative under the project policy; removing the annotation does not deny the interaction. A partner list alone does not justify transferring the partner’s catalytic activity. Source availability and the distinction between focused interaction assays and large-scale screens are recorded in the reference notes.
Supporting Evidence:
GO:0005515 protein binding
IPI
PMID:26499492
cryo-EM structures of the E. coli replicative DNA polymerase...
REMOVE
Summary: The reported interaction does not specify a useful molecular function.
Reason: This row reports binding of dnaN to UniProtKB:P10443 from PMID:26499492. Bare protein binding is uninformative under the project policy; removing the annotation does not deny the interaction. A partner list alone does not justify transferring the partner’s catalytic activity. Source availability and the distinction between focused interaction assays and large-scale screens are recorded in the reference notes.
Supporting Evidence:
GO:0005515 protein binding
IPI
PMID:7768937
Assembly of a chromosomal replication machine: two DNA polym...
REMOVE
Summary: The reported interaction does not specify a useful molecular function.
Reason: This row reports binding of dnaN to UniProtKB:P06710 from PMID:7768937. Bare protein binding is uninformative under the project policy; removing the annotation does not deny the interaction. A partner list alone does not justify transferring the partner’s catalytic activity. Source availability and the distinction between focused interaction assays and large-scale screens are recorded in the reference notes.
Supporting Evidence:
GO:0005515 protein binding
IPI
PMID:7768937
Assembly of a chromosomal replication machine: two DNA polym...
REMOVE
Summary: The reported interaction does not specify a useful molecular function.
Reason: This row reports binding of dnaN to UniProtKB:P28630 from PMID:7768937. Bare protein binding is uninformative under the project policy; removing the annotation does not deny the interaction. A partner list alone does not justify transferring the partner’s catalytic activity. Source availability and the distinction between focused interaction assays and large-scale screens are recorded in the reference notes.
Supporting Evidence:
GO:0005515 protein binding
IPI
PMID:9545254
Devoted to the lagging strand-the subunit of DNA polymerase ...
REMOVE
Summary: The reported interaction does not specify a useful molecular function.
Reason: This row reports binding of dnaN to UniProtKB:P10443 from PMID:9545254. Bare protein binding is uninformative under the project policy; removing the annotation does not deny the interaction. A partner list alone does not justify transferring the partner’s catalytic activity. Source availability and the distinction between focused interaction assays and large-scale screens are recorded in the reference notes.
Supporting Evidence:
GO:0005737 cytoplasm
EXP
PMID:23994470
A replicase clamp-binding dynamin-like protein promotes colo...
MODIFY
Summary: The soluble protein acts in the cytosolic replication machinery; cytosol is a supported refinement of the broad cytoplasm annotation..
Reason: The soluble protein acts in the cytosolic replication machinery; cytosol is a supported refinement of the broad cytoplasm annotation.
Proposed replacements: cytosol
Supporting Evidence:
PMID:10924523
the circular beta sliding clamp facilitates processive DNA replication by tethering the polymerase to primer-template DNA.
GO:0005737 cytoplasm
IEA
GO_REF:0000044
MODIFY
Summary: The soluble protein acts in the cytosolic replication machinery; cytosol is a supported refinement of the broad cytoplasm annotation..
Reason: The soluble protein acts in the cytosolic replication machinery; cytosol is a supported refinement of the broad cytoplasm annotation.
Proposed replacements: cytosol
Supporting Evidence:
PMID:10924523
the circular beta sliding clamp facilitates processive DNA replication by tethering the polymerase to primer-template DNA.
GO:0005829 cytosol
HDA
PMID:16858726
A complexomic study of Escherichia coli using two-dimensiona...
ACCEPT
Summary: The soluble chromosome-replication machinery acts in the bacterial cytosol.
Reason: The soluble chromosome-replication machinery acts in the bacterial cytosol. The experimental localization annotation is consistent with the established protein architecture; a proteomics citation is not treated as a new single-protein microscopy experiment.
Supporting Evidence:
GO:0005829 cytosol
IDA
PMID:18304323
Protein abundance profiling of the Escherichia coli cytosol.
ACCEPT
Summary: The soluble chromosome-replication machinery acts in the bacterial cytosol.
Reason: The soluble chromosome-replication machinery acts in the bacterial cytosol. The experimental localization annotation is consistent with the established protein architecture; a proteomics citation is not treated as a new single-protein microscopy experiment.
Supporting Evidence:
GO:0006260 DNA replication
IEA
GO_REF:0000002
ACCEPT
Summary: dnaN directly participates in the chromosome-replication machinery through the activity described in its core function.
Reason: dnaN directly performs topological tethering and polymerase processivity within the replication machinery. This supports participation in chromosome replication; the pathway-level term remains informative alongside the specific molecular function and subcomplex assignments.
Supporting Evidence:
PMID:10924523
the circular beta sliding clamp facilitates processive DNA replication by tethering the polymerase to primer-template DNA.
GO:0006261 DNA-templated DNA replication
NAS
PMID:7574479
DNA polymerase III holoenzyme: structure and function of a c...
ACCEPT
Summary: dnaN directly participates in the chromosome-replication machinery through the activity described in its core function.
Reason: dnaN directly performs topological tethering and polymerase processivity within the replication machinery. This supports participation in chromosome replication; the pathway-level term remains informative alongside the specific molecular function and subcomplex assignments.
Supporting Evidence:
PMID:10924523
the circular beta sliding clamp facilitates processive DNA replication by tethering the polymerase to primer-template DNA.
GO:0006271 DNA strand elongation involved in DNA replication
IBA
GO_REF:0000033
ACCEPT
Summary: The beta sliding clamp directly supports processive chromosome-strand elongation by tethering DNA polymerase.
Reason: The beta sliding clamp directly supports processive chromosome-strand elongation by tethering DNA polymerase. Its structural contribution is part of replication, even though it does not incorporate nucleotides. PAINT lineage-loss inspection found no applicable IRD/IKR; the IBA is evaluated as an ancestral-function judgment, not by counting listed donors.
Supporting Evidence:
PMID:10924523
the circular beta sliding clamp facilitates processive DNA replication by tethering the polymerase to primer-template DNA.
GO:0006271 DNA strand elongation involved in DNA replication
IDA
PMID:3519609
The beta subunit of the Escherichia coli DNA polymerase III ...
ACCEPT
Summary: The beta sliding clamp directly supports processive chromosome-strand elongation by tethering DNA polymerase.
Reason: The beta sliding clamp directly supports processive chromosome-strand elongation by tethering DNA polymerase. Its structural contribution is part of replication, even though it does not incorporate nucleotides.
Supporting Evidence:
PMID:10924523
the circular beta sliding clamp facilitates processive DNA replication by tethering the polymerase to primer-template DNA.
GO:0006974 DNA damage response
IEP
PMID:11967071
Over 1000 genes are involved in the DNA damage response of E...
UNDECIDED
Summary: The expression-screen annotation is compatible with DNA-damage regulation, but the exact dnaN expression result in the cited study has not been independently verified here.
Reason: The expression-screen annotation is compatible with DNA-damage regulation, but the exact dnaN expression result in the cited study has not been independently verified here. Damage-tolerance functions do not alone establish this specific expression result.
Supporting Evidence:
GO:0008408 3'-5' exonuclease activity
IEA
GO_REF:0000002
REMOVE
Summary: The electronic family mapping assigns the holoenzyme proofreading chemistry to a non-nuclease subunit.
Reason: The electronic family mapping assigns the holoenzyme proofreading chemistry to a non-nuclease subunit. E. coli epsilon/DnaQ carries the 3β€² to 5β€² editing activity; the target instead performs its structurally distinct loader or sliding-clamp function.
Supporting Evidence:
PMID:10924523
the circular beta sliding clamp facilitates processive DNA replication by tethering the polymerase to primer-template DNA.
GO:0009360 DNA polymerase III complex
IDA
PMID:3283127
DNA polymerase III holoenzyme of Escherichia coli. III. Dist...
MODIFY
Summary: The beta dimer is the sliding-clamp subassembly of the Pol III holoenzyme, distinct from the catalytic core and the loader..
Reason: The beta dimer is the sliding-clamp subassembly of the Pol III holoenzyme, distinct from the catalytic core and the loader.
Supporting Evidence:
PMID:10924523
the circular beta sliding clamp facilitates processive DNA replication by tethering the polymerase to primer-template DNA.
GO:0009360 DNA polymerase III complex
IEA
GO_REF:0000002
MODIFY
Summary: The beta dimer is the sliding-clamp subassembly of the Pol III holoenzyme, distinct from the catalytic core and the loader..
Reason: The beta dimer is the sliding-clamp subassembly of the Pol III holoenzyme, distinct from the catalytic core and the loader.
Supporting Evidence:
PMID:10924523
the circular beta sliding clamp facilitates processive DNA replication by tethering the polymerase to primer-template DNA.
GO:0009360 DNA polymerase III complex
NAS
PMID:7574479
DNA polymerase III holoenzyme: structure and function of a c...
MODIFY
Summary: The beta dimer is the sliding-clamp subassembly of the Pol III holoenzyme, distinct from the catalytic core and the loader..
Reason: The beta dimer is the sliding-clamp subassembly of the Pol III holoenzyme, distinct from the catalytic core and the loader.
Supporting Evidence:
PMID:10924523
the circular beta sliding clamp facilitates processive DNA replication by tethering the polymerase to primer-template DNA.
GO:0030174 regulation of DNA-templated DNA replication initiation
NAS
PMID:21708944
DnaA protein DNA-binding domain binds to Hda protein to prom...
ACCEPT
Summary: DNA-loaded beta recruits Hda and participates in RIDA, which stimulates hydrolysis of DnaA-bound ATP and prevents inappropriate reinitiation.
Reason: DNA-loaded beta recruits Hda and participates in RIDA, which stimulates hydrolysis of DnaA-bound ATP and prevents inappropriate reinitiation. Beta contributes the organizing platform, not DnaA ATPase chemistry.
Supporting Evidence:
GO:0030894 replisome
NAS
PMID:31395754
A quest for coordination among activities at the replisome.
ACCEPT
Summary: The protein is a documented component of the E.
Reason: The protein is a documented component of the E. coli replication machinery. Replisome membership is distinct from the smaller biochemical assemblies and does not mean every interaction is permanent.
Supporting Evidence:
GO:0032297 negative regulation of DNA-templated DNA replication initiation
NAS
PMID:28168278
Dynamic assembly of Hda and the sliding clamp in the regulat...
ACCEPT
Summary: DNA-loaded beta recruits Hda and participates in RIDA, which stimulates hydrolysis of DnaA-bound ATP and prevents inappropriate reinitiation.
Reason: DNA-loaded beta recruits Hda and participates in RIDA, which stimulates hydrolysis of DnaA-bound ATP and prevents inappropriate reinitiation. Beta contributes the organizing platform, not DnaA ATPase chemistry.
Supporting Evidence:
GO:0042276 error-prone translesion synthesis
IMP
PMID:15752198
Mutant forms of the Escherichia colibeta sliding clamp that ...
ACCEPT
Summary: Beta directly recruits and supports the translesion polymerase Pol V; separation-of-function clamp mutants distinguish this activity from ordinary Pol III replication.
Reason: Beta directly recruits and supports the translesion polymerase Pol V; separation-of-function clamp mutants distinguish this activity from ordinary Pol III replication. Retain this genuine repair/tolerance role in the whole-gene review.
Supporting Evidence:
GO:0042802 identical protein binding
IEA
GO_REF:0000117
KEEP AS NON CORE
Summary: Self-association is a real structural property of this protein, supported by its oligomeric assembly.
Reason: Self-association is a real structural property of this protein, supported by its oligomeric assembly. Retain this precise interaction property as non-core; it is not a substitute for the functional activity of the assembled protein.
Supporting Evidence:
PMID:10924523
the circular beta sliding clamp facilitates processive DNA replication by tethering the polymerase to primer-template DNA.
GO:0042802 identical protein binding
IPI
PMID:1349852
Three-dimensional structure of the beta subunit of E. coli D...
KEEP AS NON CORE
Summary: Self-association is a real structural property of this protein, supported by its oligomeric assembly.
Reason: Self-association is a real structural property of this protein, supported by its oligomeric assembly. Retain this precise interaction property as non-core; it is not a substitute for the functional activity of the assembled protein.
Supporting Evidence:
PMID:10924523
the circular beta sliding clamp facilitates processive DNA replication by tethering the polymerase to primer-template DNA.
GO:0042802 identical protein binding
IPI
PMID:16858726
A complexomic study of Escherichia coli using two-dimensiona...
KEEP AS NON CORE
Summary: Self-association is a real structural property of this protein, supported by its oligomeric assembly.
Reason: Self-association is a real structural property of this protein, supported by its oligomeric assembly. Retain this precise interaction property as non-core; it is not a substitute for the functional activity of the assembled protein.
Supporting Evidence:
PMID:10924523
the circular beta sliding clamp facilitates processive DNA replication by tethering the polymerase to primer-template DNA.
GO:0042802 identical protein binding
IPI
PMID:19834901
Benchmarking yeast two-hybrid systems using the interactions...
KEEP AS NON CORE
Summary: Self-association is a real structural property of this protein, supported by its oligomeric assembly.
Reason: Self-association is a real structural property of this protein, supported by its oligomeric assembly. Retain this precise interaction property as non-core; it is not a substitute for the functional activity of the assembled protein.
Supporting Evidence:
PMID:10924523
the circular beta sliding clamp facilitates processive DNA replication by tethering the polymerase to primer-template DNA.
GO:0042802 identical protein binding
IPI
PMID:23435564
A direct proofreader-clamp interaction stabilizes the Pol II...
KEEP AS NON CORE
Summary: Self-association is a real structural property of this protein, supported by its oligomeric assembly.
Reason: Self-association is a real structural property of this protein, supported by its oligomeric assembly. Retain this precise interaction property as non-core; it is not a substitute for the functional activity of the assembled protein.
Supporting Evidence:
PMID:10924523
the circular beta sliding clamp facilitates processive DNA replication by tethering the polymerase to primer-template DNA.
GO:0042802 identical protein binding
IPI
PMID:24561554
The binary protein-protein interaction landscape of Escheric...
KEEP AS NON CORE
Summary: Self-association is a real structural property of this protein, supported by its oligomeric assembly.
Reason: Self-association is a real structural property of this protein, supported by its oligomeric assembly. Retain this precise interaction property as non-core; it is not a substitute for the functional activity of the assembled protein.
Supporting Evidence:
PMID:10924523
the circular beta sliding clamp facilitates processive DNA replication by tethering the polymerase to primer-template DNA.
GO:0042802 identical protein binding
IPI
PMID:24627523
A second-generation protein-protein interaction network of H...
KEEP AS NON CORE
Summary: Self-association is a real structural property of this protein, supported by its oligomeric assembly.
Reason: Self-association is a real structural property of this protein, supported by its oligomeric assembly. Retain this precise interaction property as non-core; it is not a substitute for the functional activity of the assembled protein.
Supporting Evidence:
PMID:10924523
the circular beta sliding clamp facilitates processive DNA replication by tethering the polymerase to primer-template DNA.
GO:0042803 protein homodimerization activity
IDA
PMID:3048397
The dimer of the beta subunit of Escherichia coli DNA polyme...
KEEP AS NON CORE
Summary: Self-association is a real structural property of this protein, supported by its oligomeric assembly.
Reason: Self-association is a real structural property of this protein, supported by its oligomeric assembly. Retain this precise interaction property as non-core; it is not a substitute for the functional activity of the assembled protein.
Supporting Evidence:
PMID:10924523
the circular beta sliding clamp facilitates processive DNA replication by tethering the polymerase to primer-template DNA.
GO:0044787 bacterial-type DNA replication
IDA
PMID:3283127
DNA polymerase III holoenzyme of Escherichia coli. III. Dist...
ACCEPT
Summary: The beta sliding clamp directly supports processive chromosome-strand elongation by tethering DNA polymerase.
Reason: The beta sliding clamp directly supports processive chromosome-strand elongation by tethering DNA polymerase. Its structural contribution is part of replication, even though it does not incorporate nucleotides.
Supporting Evidence:
PMID:10924523
the circular beta sliding clamp facilitates processive DNA replication by tethering the polymerase to primer-template DNA.
GO:1990078 replication inhibiting complex
IPI
PMID:28168278
Dynamic assembly of Hda and the sliding clamp in the regulat...
ACCEPT
Summary: DNA-loaded beta recruits Hda and participates in RIDA, which stimulates hydrolysis of DnaA-bound ATP and prevents inappropriate reinitiation.
Reason: DNA-loaded beta recruits Hda and participates in RIDA, which stimulates hydrolysis of DnaA-bound ATP and prevents inappropriate reinitiation. Beta contributes the organizing platform, not DnaA ATPase chemistry.
Supporting Evidence:
GO:1990085 Hda-beta clamp complex
IPI
PMID:15150238
Interaction of the sliding clamp beta-subunit and Hda, a Dna...
ACCEPT
Summary: DNA-loaded beta recruits Hda and participates in RIDA, which stimulates hydrolysis of DnaA-bound ATP and prevents inappropriate reinitiation.
Reason: DNA-loaded beta recruits Hda and participates in RIDA, which stimulates hydrolysis of DnaA-bound ATP and prevents inappropriate reinitiation. Beta contributes the organizing platform, not DnaA ATPase chemistry.
Supporting Evidence:

Core Functions

Encircles DNA as a beta dimer and tethers polymerases for processive replication and translesion synthesis.

Supporting Evidence:
  • PMID:10924523
    the circular beta sliding clamp facilitates processive DNA replication by tethering the polymerase to primer-template DNA.

References

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Notes

(dnaN-notes.md)

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