ERCC3 source evidence guide

Source assessment, 2026-10-24. No publication quotations are added. Full original access, selected sections actually read, target-data checks, and independent corroboration are distinguished below. A saved HTTP response, cache flag or successful download is not treated as proof of scientific reading.

PMID:8692841

Isolation and characterization of two human transcription factor IIH (TFIIH)-related complexes: ERCC2/CAK and TFIIH.

Access: operative original. OCR of original pp. 6483–6486, Methods, Results, Figures 3–5 captions.

Human HeLa TFIIH fractions; human transcription reconstitution and hamster repair-deficient extract complementation. The linked 1996 correction page was identified, but its image body could not be retrieved; no assertion that the correction was read. Figures 3–5 are distinct from the correction page’s indexed Figure 2.

PMID:8692842

Human cyclin-dependent kinase-activating kinase exists in three distinct complexes.

Access: operative original. Original pp. 6489–6490, Methods/Results and Figures 1–2 captions.

Native human HeLa complexes and reciprocal MAT1/XPB immunoprecipitation; CAK–XPD fraction without XPB distinguished. No pure XPB kinase assay.

PMID:8663148

A 3' --> 5' XPB helicase defect in repair/transcription factor TFIIH of xeroderma pigmentosum group B affects both DNA repair and transcription.

Access: operative original. Methods p. 15899; Results pp. 15900–15902; Discussion pp. 15902–15903; Figures 1–5 captions; Table I.

Patient XPB TFIIH versus heterozygous maternal control; recombinant human GST-XPB in E. coli. Figure 4 separately measures ATPase/unwinding. No separate linking-number or TC-NER assay.

PMID:2167179

A presumed DNA helicase encoded by ERCC-3 is involved in the human repair disorders xeroderma pigmentosum and Cockayne's syndrome.

Access: operative original. Results functional-domain predictions and Role of ERCC3 in XP; Figure 4; Experimental Procedures cell transfection, UV survival, microinjection and repair synthesis.

Human cDNA complements XPB patient-cell repair synthesis, separately from rodent 27-1. DNA-binding/helicase motifs are predictions awaiting assays; no damaged-versus-undamaged binding comparison.

PMID:10734143

The xeroderma pigmentosum group C protein complex XPC-HR23B plays an important role in the recruitment of transcription factor IIH to damaged DNA.

Access: operative original. Author-uploaded original Methods protein production/pull-down; Results Figures 1–3 and recruitment experiments; captions.

Human HeLa XPC–HR23B and recombinant XPC/Sf9, HR23B/E. coli, GST-human TFIIH subunits. Free XPC binds GST-XPB; free HR23B does not. Complex association must not be called a binary RAD23B–XPB assay.

PMID:10801852

Distinct regions of MAT1 regulate cdk7 kinase and TFIIH transcription activities.

Access: abstract only. PubMed identity/abstract and failed publisher routes.

Original MAT1-domain assays unverified; same-partner human association is independently supported by 8692842.

PMID:16669699

Dynamic interaction of TTDA with TFIIH is stabilized by nucleotide excision repair in living cells.

Access: operative original. Indexed original blocks 9–14 and 47–56; Results Figure 1C/D and Figure 2C; Methods.

Human fibroblast tagged TTDA/XPD/XPB; co-immunoprecipitation and localization with parental controls. No pure binary interaction inference.

PMID:17438371

Detection and identification of transcription factors as interaction partners of alien in vivo.

Access: operative original. Author-uploaded four-page original: Methods paragraph p. 993; Results p. 995; Figure 1B caption.

Human U2OS endogenous Alien/COPS2 complex capture, MS identification and co-IP. Complex association, not purified binary contact or XPB corepressor activity.

PMID:17466626

Distinct roles for the XPB/p52 and XPD/p44 subcomplexes of TFIIH in damaged DNA opening during nucleotide excision repair.

Access: operative original. Actual author original Results pp. 245–249; Methods p. 254; Figures 1–6 captions.

Human FLAG-XPB proteins in Sf9; human patient TFIIH; human constructs also rescue hamster cells. p52 stimulates XPB ATPase. Directional unwinding in Figure 5B is separable from retained ATPase/repair in T469A/Q638A. No supplement or figure pixels inspected.

PMID:19172752

Structural basis for group A trichothiodystrophy.

Access: abstract only. PubMed identity/abstract; full original unavailable.

Do not infer misattribution from a yeast-focused title. Human TTDA–XPB association independently established by 16669699.

PMID:19934020

Both XPD alleles contribute to the phenotype of compound heterozygote xeroderma pigmentosum patients.

Access: operative original. Indexed blocks 30–38 and 68–78; Figure 4B versus 4D and Figure 5C; recombinant-complex Methods.

Human TFIIH in Sf9. XPB/XPD complex association differs from direct XPD–p44 binding; Figure 5C is XPD ATPase, not XPB-specific chemistry.

PMID:21988832

Toward an understanding of the protein interaction network of the human liver.

Access: operative original and target data. Original indexed blocks 11–16, 27–28, 36–37; Supplementary Table S2 row 669; 2017 correction body.

Human liver ORF/library Y2H. Entrez 2071–3839 is ERCC3–KPNA3. Selected follow-up is not universal pair validation. Correction PMID:29254952 corrects an author name, not this dataset.

PMID:25416956

A proteome-scale map of the human interactome network.

Access: operative original and target data. Actual main original blocks 20–21; official HI-II-14 PSI-MI target rows.

Human Y2H; retested screen pairs XIAP and CEP70 independently located. Orthogonal validation only for subsets; no supplementary Methods or figure pixels read.

PMID:26496610

A human interactome in three quantitative dimensions organized by stoichiometries and abundances.

Access: abstract only. PubMed identity/abstract; complete operative original unavailable.

Independent same-partner association from 16669699; no original assay, interface or species-specific detail asserted.

PMID:27193682

Near-atomic resolution visualization of human transcription promoter opening.

Access: operative original. Indexed blocks 7, 22–23, 34–42, 50–51; Results/Figures 3 and 5 and Methods.

HeLa TFIIH/Pol II plus recombinant factors; TBP substitutes for TFIID. Preformed mismatch bubbles/crosslinking; inferred movement between static states is not timed stepping.

PMID:28514442

Architecture of the human interactome defines protein communities and disease networks.

Access: operative original target data unread. Official BioC original passages 12–19.

Human ORFeome tagged-bait AP-MS, biological versus technical replication and background scoring. Exact TTDA target record not located; independent 16669699 supports the same partner.

PMID:31515488

Extensive disruption of protein interactions by genetic variants across the allele frequency spectrum in human populations.

Access: operative original and target data. Original blocks 13–20, 47–48, 52–56, 61–62, 67–68; Supplementary Data 2 row 1222, Data 4 row 321, Data 6 row 37.

WT/variant interaction profiles, TRIM27 N355S and XIAP G188E with ERCC3. Disruption=0/intact is not a gain claim. Human proteins assayed in Y2H/PCA; no automatic native-complex extrapolation.

PMID:32296183

A reference map of the human binary protein interactome.

Access: operative original and target data. Original blocks 7–10 and 53; official HuRI PSI-MI ERCC3 records, with exact line/clone/isoform fields.

Human proteins in yeast two-hybrid. Nine imported pairs match; ADAMTSL4 source partner -3 versus actual dataset -1 is unresolved. Main retest/sequence checks read, no pair-specific mammalian validation assumed.

PMID:33961781

Dual proteome-scale networks reveal cell-specific remodeling of the human interactome.

Access: operative original target data unread. Official BioC passages 99–100, 102, 108–109, 126–127.

Human tagged-bait AP-MS in 293T/HCT116, separately analyzed. Pair-specific TTDA record not inspected; independent 16669699 association used transparently.

PMID:34591642

A protein network map of head and neck cancer reveals PIK3CA mutant drug sensitivity.

Access: operative original target data unread. Official BioC passages 7–13 and 33–34.

Tagged-bait AP-MS in SCC25/CAL33/HET1A with replicate/scoring controls; target XPC–XPB pair not located. Independent actual 10734143 supports the pair, not the specific cancer-screen context.

PMID:7663514

p53 modulation of TFIIH-associated nucleotide excision repair activity.

Access: abstract only. PubMed identity and abstract; original publisher access insufficient.

p53–XPB direct binding unverified. 8675009 functional p53-rescue experiment is not a new binding assay; holo-TFIIH membership independently established.

PMID:7926747

Transcription factor IIE binds preferentially to RNA polymerase IIa and recruits TFIIH: a model for promoter clearance.

Access: operative original. Actual original mirrored PDF through indexed web reader: Results pp. 518–519, Figures 4–6 captions, Methods pp. 522–523, Discussion p. 521.

Human MBP-ERCC3 binding individually translated TFIIE56/34 with controls. HeLa TFIIH recovery on TFIIE resin is a separate experiment. Direct local download returned HTML, not a PDF; evidence is the captured original web text.

PMID:8652557

Interactions involving the human RNA polymerase II transcription/nucleotide excision repair complex TFIIH, the nucleotide excision repair protein XPG, and Cockayne syndrome group B (CSB) protein.

Access: abstract only. PubMed identity/abstract and failed publisher routes.

Independent TFIIH subunit associations retained explicitly; exact XPB–XPG context unresolved. No target attribution judgment from abstract/title.

PMID:9173976

The XPB subunit of repair/transcription factor TFIIH directly interacts with SUG1, a subunit of the 26S proteasome and putative transcription factor.

Access: operative original. Original Methods pp. 2275–2276; Results pp. 2278–2280; Figures 2–6 captions; relevant Discussion.

Human XPB bait aa31–742 with mouse embryonic Sug1 library; tagged coexpression validates association. Figures 5–6 recover endogenous human SUG1/XPB. Official P62195 human and P62196 mouse PSMC5 identities checked; not SUG2.

PMID:9852112

Immunoaffinity purification and functional characterization of human transcription factor IIH and RNA polymerase II from clonal cell lines that conditionally express epitope-tagged subunits of the multiprotein complexes.

Access: abstract only. PubMed identity/abstract; complete original not recovered.

Independent human TFIIH purification and initiation reconstitution resolve established membership/phase without implying original-specific verification.

PMID:15220921

A new, tenth subunit of TFIIH is responsible for the DNA repair syndrome trichothiodystrophy group A.

Access: abstract only. PubMed identity/abstract and publisher preview, not complete original.

Human TFIIH membership independently established. Linked CommentIn records are commentary, not retraction or correction.

PMID:17509950

Influence of XPB helicase on recruitment and redistribution of nucleotide excision repair proteins at sites of UV-induced DNA damage.

Access: abstract only. PubMed identity/positive abstract; EPMC/PMC/BioC retrieval failures.

Patient repair-factor recruitment/retention abstract supports relevance; exact localization causality unresolved. Independent human repair assays resolve NER and UV-response biology.

PMID:22572993

TFIIH: when transcription met DNA repair.

Access: review preview only. PubMed identity/abstract and publisher key points/figure summaries; full review not recovered. Actual publisher erratum read.

Secondary review. Erratum corrects XPD helicase direction in Table 1, not an XPB motor assay. Original independent assays support review-linked repair/initiation claims.

PMID:8675009

The XPB and XPD DNA helicases are components of the p53-mediated apoptosis pathway.

Access: operative original. Actual author original OCR pp. 1221–1223 and 1226–1227; Figure 4B and Tables 2–3; Results/Discussion.

Human XPB patient fibroblasts, p53 overexpression and WT XPB coinjection rescue; delayed rather than universally absent apoptosis. Adriamycin/Fas lymphoblast experiments concern XPD, not XPB. No figure pixels or complete supplementary/Methods reading claimed.

PMID:17614221

Genetic susceptibility of newborn daughters to oxidative stress.

Access: abstract only. PubMed identity/abstract; complete original unavailable.

Human peroxide-response context does not resolve exact XPB perturbation/control scope. No wrong-gene conclusion from foregrounded genotypes.

PMID:11335038

Trichothiodystrophy, a transcription syndrome.

Access: review abstract only. PubMed identity and abstract; publisher access blocked.

Hair-cell differentiation term has epidermal and neuronal branches. No universal inner-ear interpretation; experimental lineage/species/XPB role unresolved.

PMID:16914395

The role of XPB in cell apoptosis and viability and its relationship with p53, p21(waf1/cip1) and c-myc in hepatoma cells.

Access: abstract only. PubMed identity and positive abstract; operative original unavailable.

HepG2 XPB overexpression/apoptosis context not independently verified. Same broad positive-regulatory claim independently supported in a different human fibroblast context by 8675009.

PMID:17088560

DNA nucleotide excision repair-dependent signaling to checkpoint activation.

Access: operative original. Original indexed blocks 24–27 and 34–44, UV signaling Results and Methods.

Human primary fibroblasts including two XPB mutants; UV Chk1/p53 phosphorylation differs by proliferation state. No XPB kinase or direct full transition-kinetics assay.

Database, ortholog and supplementary primary evidence

Original evidence and access scope

PMID:8855246

Publisher/DOI; actual original access.

All five scanned pages 10718–10722, including Methods 10718–10719, Results 10719–10720, Figures 1–3 and Table 1. Figure pixels actually inspected. Yeast Rad25/Ssl2 copurifies with Rad2 and core TFIIH; the preparation supports reconstituted incision.

Yeast complex; not an isolated human XPB endonuclease assay or a human isoform assignment.

PMID:22751016

Publisher/DOI; actual original access.

Results indexed blocks 54–62,65–69,71,74–75; Discussion 84–85; Methods 90,93,95,97,102. Yeast Ssl2 crosslinking in immobilized promoter PICs, with the Figure 6–8 captions.

Main operative text and captions only; no supplementary files or image pixels. Translocase description here is a proposed mechanistic model, not a direct human motor assay.

PMID:22323595

Publisher/DOI; actual original access.

Results blocks 31,34–35,37,39; main Methods 71; Figure 2 caption and actual Figure 2 pixels. Mouse postnatal liver XPB ChIP at Igf1, GhR, Dio1 and PrlR promoters, with nonpromoter/inactive-gene controls.

Main Methods delegates details to SI and prior work. The attempted SI retrieval returned HTML, not a PDF. This is promoter-associated chromatin occupancy, not purified sequence-specific DNA recognition.

PMID:11425516

Publisher/DOI; actual original access.

Publisher-permitted article reprint in thesis: permission p58; Methods pp 62–68 and Results pp 69–76/Figs 2.2–2.6 captions (text lines3440–4180). Rat GD10–12 embryo/yolk-sac NER expression profiling; XPB transcript and protein measurements; teratogen exposure.

Text/captions read, no independent figure-pixel inspection for this source. Expression during organogenesis and a nonspecific teratogen do not establish an XPB-executed organ-development step.

PMID:23562818

Publisher/DOI; actual original access.

Author-uploaded original: Results pp 2882–2885/web384–640 and Figure 3 caption/web764–782; Methods pp 2890–2891/web1503–1751. Human HeLa triptolide versus alpha-amanitin, RNA readouts and XPB ChIP are separated from mouse ES mutant experiments.

No figure pixels or supplement. This is inhibitor/occupancy evidence, not purified XPB ATPase measurement. An initial guessed Oxford URL used wrong pagination and failed403; it is not evidence of original unavailability. Verified citation is HMG22(14):2881–2893.

PMID:17466626

Publisher/DOI; actual original access.

Results pp 248–249/web533–698, Figure 3–5 captions/web906–990; Methods p254/web1096–1265. Recombinant human XPB expressed in Sf9, immunopurified bidirectional M13 unwinding, ATPase and TFIIH NER assays. Figure 5B reports 3′–5′ helicase activity; helicase-impaired T469A/Q638A retain ATPase and repair, whereas K346R does not.

No figure pixels inspected for this source. CHO host-cell complementation uses human XPB transgene, distinct from purified recombinant and native human-cell TFIIH assays.

PMID:41673165

Publisher/DOI; actual original access.

Independently read Results 46–51, Figure 5 caption48, Methods 56,60–61,68–69: recombinant human Core7 with separate XPB K346R and XPD K48R mutants, ATPase and bubble formation/enlargement.

Figure 5 was inspected separately; the main-text and caption assessment is corroborated by that image inspection. The two-stroke translocation diagram is a model; ATP/ADP was not visualized in the relevant No-G/DuIS structures. Does not erase the historical isolated XPB unwinding assay.

PMID:27193682

Publisher/DOI; actual original access.

Independently read original indexed blocks 7,22–23,34–42,50–51: HeLa-derived TFIIH and Pol II, recombinant general factors and TBP substituted for TFIID, premelted mismatch scaffolds; XPB duplex-DNA engagement in static PIC states.

No image or supplemental inspection for this source. The 12-bp displacement is inferred between structural states, not real-time stepping. PIC preparation does not establish TFIID membership.

PAINT and ortholog provenance

The PANTHER tree and MSA, service version19, contain human P19447 at PTN002477849. Its ungapped aligned sequence exactly matches the official 782-residue canonical sequence. The current IBD file places the assigned assertions at PTN000138598 (Eukaryota), PTN000138606 (Theria) and PTN000138607 (Eutheria). All lie on the target path; no NOT record intervenes in this saved current-IBD path. This verifies topology and alignment identity, not a new all-family functional reconstruction. Human self-WITH entries are legitimate descendant experimental evidence.

The rat Ercc3 donor Q4G005/RGD1307139 for embryonic organ development is IEP/PMID:11425516. Its actual expression study does not establish an XPB-specific developmental step; the proposed MAO concerns evidence scope, not correct node ancestry. For hair-cell differentiation, the correct Theria node inherits human evidence from PMID:11335038, a review available only as a verified abstract. Its positive hair-dysplasia discussion does not settle differentiation versus hair-shaft/mature-cell effects. GO:0035315 is not restricted to inner-ear sensory cells.

Mouse P49135 carries the promoter-chromatin IDA PMID:22323595; actual Figure 2 and promoter/nonpromoter controls support transfer. Its ATPase IMP citation23562818 is distinguished from the independently read human biochemical assays. No ARBA assertion occurs for this source.

Target-specific database evidence

InterPro target matches identify IPR001161 at 60–779 and IPR006935 at 315–471, with the imported GO mappings. This resolves an apparent difference between the UniProt cross-reference subset and the full InterPro target-match response; neither family identity nor label was guessed. Rhea13065 supplies ATP-hydrolysis chemistry, kept separately from motor movement.

HPA ERCC3 actual XML reports supported ICC/IF nucleoplasm localization in A-431, U-251MG and U2OS with CAB037153 and HPA046077. These target antibody records support nucleus→nucleoplasm refinement. They do not identify a natural alternative product; none was supplied by the frozen UniProt source. No independent HPA image scoring was performed.

Every one of the 73 Reactome source rows has a forward participant path to ERCC3 entity 67439: human P19447, residues1–782, compartment nucleoplasm. The 66 location rows are not converted into catalytic assertions for whichever enzyme executes the event. The four helicase rows use catalyst 109879 or catalyst 9684122, whose activeUnit specifically names ERCC3. These are not XPD-subunit transfers. The source-specific paths and events follow.

Seed index Original source Participant route to ERCC3
51 R-HSA-109639: Formation of the closed pre-initiation complex 109639 —input→109634 —hasComponent→67439
52 R-HSA-111264: Addition of nucleotides between position +11 and +30 111264 —input→75902 —hasComponent→109634 —hasComponent→67439
53 R-HSA-112379: Recruitment of elongation factors to form elongation complex 112379 —input→109634 —hasComponent→67439
54 R-HSA-112383: Hypophosphorylation of RNA Pol II CTD by FCP1P protein 112383 —input→109634 —hasComponent→67439
55 R-HSA-112385: Addition of nucleotides leads to transcript elongation 112385 —output→109634 —hasComponent→67439
56 R-HSA-113430: Extrusion of 5'-end of 30 nt long transcript through the pore in Pol II complex 113430 —input→111261 —hasComponent→109634 —hasComponent→67439
57 R-HSA-5689317: Formation of the pre-incision complex in GG-NER 5689317 —input→6790517 —hasComponent→5689624 —hasComponent→67439
58 R-HSA-5689861: Recruitment of XPA and release of CAK 5689861 —input→5689862 —hasComponent→109634 —hasComponent→67439
59 R-HSA-5690213: DNA polymerases delta, epsilon or kappa bind the GG-NER site 5690213 —input→5691059 —hasComponent→5689624 —hasComponent→67439
60 R-HSA-5690988: 3'-incision of DNA by ERCC5 (XPG) in GG-NER 5690988 —output→5689624 —hasComponent→67439
61 R-HSA-5690990: 5'- incision of DNA by ERCC1:ERCC4 in GG-NER 5690990 —output→5691059 —hasComponent→5689624 —hasComponent→67439
62 R-HSA-5690991: Binding of ERCC1:ERCC4 (ERCC1:XPF) to pre-incision complex in GG-NER 5690991 —input→5691043 —hasComponent→6790517 —hasComponent→5689624 —hasComponent→67439
63 R-HSA-5690996: ERCC2 and ERCC3 DNA helicases form an open bubble structure in damaged DNA 5690996 —output→5691018 —hasComponent→5689624 —hasComponent→67439
64 R-HSA-5691000: TFIIH binds GG-NER site to form a verification complex 5691000 —input→109634 —hasComponent→67439
65 R-HSA-5696670: CHD1L is recruited to GG-NER site 5696670 —input→5689300 —hasComponent→5689624 —hasComponent→67439
66 R-HSA-6781818: RNA Pol II initiates transcription from damaged DNA template 6781818 —input→109634 —hasComponent→67439
67 R-HSA-6781824: Active RNA Pol II complex transcribes lesion-containing DNA template 6781824 —input→6781821 —hasComponent→109634 —hasComponent→67439
68 R-HSA-6781833: ERCC8 (CSA) binds stalled RNA Pol II 6781833 —input→6781837 —hasComponent→6781822 —hasComponent→109634 —hasComponent→67439
69 R-HSA-6781840: ERCC6 binds stalled RNA Pol II 6781840 —input→6781822 —hasComponent→109634 —hasComponent→67439
70 R-HSA-6781867: ERCC8:DDB1:CUL4:RBX1 ubiquitinates ERCC6 and RNA Pol II 6781867 —input→6781839 —hasComponent→6781837 —hasComponent→6781822 —hasComponent→109634 —hasComponent→67439
71 R-HSA-6782004: Assembly of the pre-incision complex in TC-NER 6782004 —input→6781866 —hasComponent→6781848 —hasComponent→6781861 —hasComponent→109634 —hasComponent→67439
72 R-HSA-6782069: UVSSA:USP7 deubiquitinates ERCC6 6782069 —input→6782063 —hasComponent→6781866 —hasComponent→6781848 —hasComponent→6781861 —hasComponent→109634 —hasComponent→67439
73 R-HSA-6782131: ERCC2-facilitated RNA Pol II backtracking in TC-NER 6782131 —output→9684117 —hasComponent→9684121 —hasComponent→9684120 —hasComponent→9684119 —hasComponent→109634 —hasComponent→67439
74 R-HSA-6782138: ERCC5 and RPA bind TC-NER site 6782138 —input→6782111 —hasComponent→6782122 —hasComponent→6782112 —hasComponent→6782116 —hasComponent→109634 —hasComponent→67439
75 R-HSA-6782141: Binding of ERCC1:ERCC4 (ERCC1:XPF) to pre-incision complex in TC-NER 6782141 —input→6782134 —hasComponent→6782111 —hasComponent→6782122 —hasComponent→6782112 —hasComponent→6782116 —hasComponent→109634 —hasComponent→67439
76 R-HSA-6782204: 5' incision of damaged DNA strand by ERCC1:ERCC4 in TC-NER 6782204 —output→6782205 —hasComponent→109634 —hasComponent→67439
77 R-HSA-6782208: Repair DNA synthesis of ~27-30 bases long patch by POLD, POLE or POLK in TC-NER 6782208 —input→6782222 —hasComponent→109634 —hasComponent→67439
78 R-HSA-6782211: DNA polymerases delta, epsilon or kappa bind the TC-NER site 6782211 —input→6782205 —hasComponent→109634 —hasComponent→67439
79 R-HSA-6782224: 3' incision by ERCC5 (XPG) in TC-NER 6782224 —input→6782219 —hasComponent→109634 —hasComponent→67439
80 R-HSA-6782227: Ligation of newly synthesized repair patch to incised DNA in TC-NER 6782227 —input→6782220 —hasComponent→109634 —hasComponent→67439
81 R-HSA-6782234: Recovery of RNA synthesis after TC-NER 6782234 —output→109634 —hasComponent→67439
82 R-HSA-6790454: SUMOylation of XPC 6790454 —input→5691018 —hasComponent→5689624 —hasComponent→67439
83 R-HSA-6790487: RNF111 ubiquitinates SUMOylated XPC 6790487 —input→6790468 —hasComponent→5689624 —hasComponent→67439
84 R-HSA-6797606: CDK12 phosphorylates RNA Pol II CTD at DNA repair genes 6797606 —input→6797614 —hasComponent→6797611 —hasComponent→109634 —hasComponent→67439
85 R-HSA-6797616: CCNK:CDK12 binds RNA Pol II at DNA repair genes 6797616 —input→6797611 —hasComponent→109634 —hasComponent→67439
86 R-HSA-73758: Recruitment of RNA Polymerase I:RRN3 to the 45S pre-rRNA gene 73758 —input→109634 —hasComponent→67439
87 R-HSA-73769: Loss of RRN3 from RNA Polymerase I promoter escape complex 73769 —input→73716 —hasComponent→109634 —hasComponent→67439
88 R-HSA-73946: Abortive initiation after formation of the first phosphodiester bond 73946 —output→109634 —hasComponent→67439
89 R-HSA-74986: Elongation of pre-rRNA transcript 74986 —input→73717 —hasComponent→109634 —hasComponent→67439
90 R-HSA-74992: Dissociation of PTRF:RNA Polymerase I:pre-rRNA complex 74992 —output→109634 —hasComponent→67439
91 R-HSA-74993: PTRF binds the paused RNA Polymerase I complex 74993 —input→74979 —hasComponent→73717 —hasComponent→109634 —hasComponent→67439
92 R-HSA-74994: Elongating RNA Polymerase I Transcription Complex pauses at the TTF1:Sal Box 74994 —input→9988366 —hasComponent→73717 —hasComponent→109634 —hasComponent→67439
93 R-HSA-75850: Addition of the third nucleotide on the nascent transcript 75850 —input→109878 —hasComponent→109634 —hasComponent→67439
94 R-HSA-75856: Abortive Initiation Before Second Transition 75856 —output→109634 —hasComponent→67439
95 R-HSA-75861: NTP Binds Active Site of RNA Polymerase II 75861 —input→109876 —hasComponent→109634 —hasComponent→67439
96 R-HSA-75862: Fall Back to Closed Pre-initiation Complex 75862 —input→109876 —hasComponent→109634 —hasComponent→67439
97 R-HSA-75864: Newly Formed Phosphodiester Bond Stabilized and PPi Released 75864 —input→83601 —hasComponent→109634 —hasComponent→67439
98 R-HSA-75866: Nucleophillic Attack by 3'-hydroxyl Oxygen of nascent transcript on the Alpha Phosphate of NTP 75866 —output→83601 —hasComponent→109634 —hasComponent→67439
99 R-HSA-75869: Addition of the fourth nucleotide on the Nascent Transcript: Second Transition 75869 —input→75878 —hasComponent→109634 —hasComponent→67439
100 R-HSA-75873: Addition of Nucleotides 5 through 9 on the growing Transcript 75873 —input→75881 —hasComponent→109634 —hasComponent→67439
101 R-HSA-75891: Abortive Initiation After Second Transition 75891 —output→109634 —hasComponent→67439
102 R-HSA-75949: RNA Polymerase II Promoter Opening: First Transition 75949 —catalystActivity→109879 —activeUnit→67439
103 R-HSA-76576: Addition of nucleotides 10 and 11 on the growing transcript: Third Transition 76576 —input→75882 —hasComponent→109634 —hasComponent→67439
104 R-HSA-77068: Activation of GT 77068 —input→77053 —hasComponent→109634 —hasComponent→67439
105 R-HSA-77069: RNA Polymerase II CTD (phosphorylated) binds to CE 77069 —input→157174 —hasComponent→109634 —hasComponent→67439
106 R-HSA-77071: Phosphorylation (Ser5) of RNA pol II CTD 77071 —input→157171 —hasComponent→109634 —hasComponent→67439
107 R-HSA-77073: SPT5 subunit of Pol II binds the RNA triphosphatase (RTP) 77073 —input→77056 —hasComponent→109634 —hasComponent→67439
108 R-HSA-77077: Capping complex formation 77077 —input→77061 —hasComponent→109634 —hasComponent→67439
109 R-HSA-77078: Hydrolysis of the 5'-end of the nascent transcript by the capping enzyme 77078 —input→77063 —hasComponent→77061 —hasComponent→109634 —hasComponent→67439
110 R-HSA-77081: Formation of the CE:GMP intermediate complex 77081 —input→77064 —hasComponent→77061 —hasComponent→109634 —hasComponent→67439
111 R-HSA-77083: Transfer of GMP from the capping enzyme GT site to 5'-end of mRNA 77083 —output→77066 —hasComponent→77061 —hasComponent→109634 —hasComponent→67439
112 R-HSA-77085: Dissociation of transcript with 5'-GMP from GT 77085 —input→77066 —hasComponent→77061 —hasComponent→109634 —hasComponent→67439
113 R-HSA-77090: Methylation of GMP-cap by RNA Methyltransferase 77090 —output→109634 —hasComponent→67439
114 R-HSA-9613494: Unwinding of DNA for the Nascent Transcript: Second Transition 9613494 —catalystActivity→109879 —activeUnit→67439
115 R-HSA-9613497: Unwinding DNA for the nascent transcript 9613497 —catalystActivity→109879 —activeUnit→67439
116 R-HSA-9684118: ERCC3-facilitated RNA Pol II backtracking in TC-NER 9684118 —catalystActivity→9684122 —activeUnit→67439
125 R-HSA-6781827: Transcription-Coupled Nucleotide Excision Repair (TC-NER) 6781827 —hasEvent→6782234 —output→109634 —hasComponent→67439
133 R-HSA-73857: RNA Polymerase II Transcription 73857 —hasEvent→674695 —hasEvent→73946 —output→109634 —hasComponent→67439
138 R-HSA-73776: RNA Polymerase II Promoter Escape 73776 —hasEvent→9613497 —catalystActivity→109879 —activeUnit→67439
154 R-HSA-75949: RNA Polymerase II Promoter Opening: First Transition 75949 —catalystActivity→109879 —activeUnit→67439
155 R-HSA-9613494: Unwinding of DNA for the Nascent Transcript: Second Transition 9613494 —catalystActivity→109879 —activeUnit→67439
156 R-HSA-9613497: Unwinding DNA for the nascent transcript 9613497 —catalystActivity→109879 —activeUnit→67439
157 R-HSA-9684118: ERCC3-facilitated RNA Pol II backtracking in TC-NER 9684118 —catalystActivity→9684122 —activeUnit→67439

Ontology and event interpretation

GO:0043138 currently has a 3′–5′ helicase label but a definition describing the opposite direction; OLS independently reproduces the inconsistency. The actual EC5.6.2.4 record describes 3′–5′ movement. Imported IDs/labels remain intact; assay direction comes from the actual human original.

GO:0015616 describes ATP-driven DNA movement and is currently unrestricted MF. It is used for the principal motor refinement, while GO:0016887 retains separately measured ATP chemistry. Neither is inferred to be the other’s current ontology ancestor.

Reactome 73776 models promoter escape. Current GO:0006367 and its initiation parent explicitly distinguish clearance from initiation, while GO:0006368 starts after clearance. GO:0001111 therefore supplies the source-specific promoter-clearance replacement; its ancestry includes transcription by Pol II, not initiation or elongation.

The backtracking discussion in Reactome 9684118 uses a bacterial UvrD analogy. Retaining an independently measured human helicase capacity does not certify every modeled human backtracking step. The 9613494/9613497 event objects also use nucleotide-product representations that should not replace actual XPB phosphate-release chemistry; no claim of AMP/PPi production by XPB is made.

Human transcription-dependence study: PMID:35947745

Original article. Main Methods, Results and Discussion were inspected, including the acute-depletion PRO-seq experiments and controls. Endogenous FKBP-tagged human HAP1 factors were depleted for two hours; moth-nuclei spike-ins and untagged drug controls support the transcription comparison. XPB dependence is variable across promoters, and residual protein remains. No figure pixels or supplementary files were inspected. The 2026 Communications Biology item DOI 10.1038/s42003-026-10203-1 is a Perspective, not an additional primary experimental study.

Core chemistry and partner-specific refinement

Fresh official ATP hydrolysis and DNA translocase definitions and typed ancestry distinguish chemical ATP turnover from the overall ATP-driven motor action. Both are represented as activities of the same XPB molecule. The hydrolysis entry uses the already inspected human primary experiments described above and adds no new process assertion or quotation.

Official O00505 identifies human KPNA3 as an importin-alpha family member. GO:0061676 requires binding to that family; the exact liver-screen and HuRI records documented above support this refinement. They do not establish physiological cargo transport or receptor activity by XPB. The current GO:0043138 label/definition polarity mismatch remains documented; no imported identifier or label was altered.