GO_REF:0000024
Manual transfer of experimentally-verified manual GO annotation data to orthologs by curator judgment of sequence similarity
GO_REF:0000033
Annotation inferences using phylogenetic trees
GO_REF:0000044
Gene Ontology annotation based on UniProtKB/Swiss-Prot Subcellular Location vocabulary mapping, accompanied by conservative changes to GO terms applied by UniProt
GO_REF:0000108
Automatic assignment of GO terms using logical inference, based on on inter-ontology links
PMID:11527969
Substrate specificities of recombinant mannan-binding lectin-associated serine proteases-1 and -2.
PMID:12847249
Modular organization of the carboxyl-terminal, globular head region of human C1q A, B, and C chains.
PMID:12960167
The crystal structure of the globular head of complement protein C1q provides a basis for its versatile recognition properties.
PMID:1706597
Characterization and organization of the genes encoding the A-, B- and C-chains of human complement subcomponent C1q. The complete derived amino acid sequence of human C1q.
PMID:18250442
C1q binds phosphatidylserine and likely acts as a multiligand-bridging molecule in apoptotic cell recognition.
PMID:19006321
Interaction of human C1q with IgG and IgM: revisited.
PMID:21054788
CD91 interacts with mannan-binding lectin (MBL) through the MBL-associated serine protease-binding site.
PMID:22516433
Proteomic analysis of microvesicles from plasma of healthy donors reveals high individual variability.
PMID:23650384
Expression of recombinant human complement C1q allows identification of the C1r/C1s-binding sites.
PMID:24626930
Complement is activated by IgG hexamers assembled at the cell surface.
PMID:25037231
Extracellular matrix signatures of human primary metastatic colon cancers and their metastases to liver.
PMID:28018340
Analysis of the Interaction between Globular Head Modules of Human C1q and Its Candidate Receptor gC1qR.
PMID:28104818
Structure and activation of C1, the complex initiating the classical pathway of the complement cascade.
PMID:28325905
Evidence for C1q-mediated crosslinking of CD33/LAIR-1 inhibitory immunoreceptors and biological control of CD33/LAIR-1 expression.
PMID:28675934
Characterization of the Extracellular Matrix of Normal and Diseased Tissues Using Proteomics.
PMID:29449492
Structures of C1-IgG1 provide insights into how danger pattern recognition activates complement.
PMID:2988513
Molecular modelling of human complement subcomponent C1q and its complex with C1r2C1s2 derived from neutron-scattering curves and hydrodynamic properties.
PMID:32296183
A reference map of the human binary protein interactome.
PMID:3258649
The binding site for C1q on IgG.
PMID:34155115
C1q binding to surface-bound IgG is stabilized by C1r(2)s(2) proteases.
PMID:6249812
Activation of a complex of C1r and C1s subcomponents of human complement C1 by the third subcomponent C1q.
PMID:6776418
The Clq receptor site on immunoglobulin G.
PMID:6952210
Ultrastructure of the first component of human complement: electron microscopy of the crosslinked complex.
PMID:708376
Amino acid sequence of the N-terminal 108 amino acid residues of the B chain of subcomponent C1q of the first component of human complement.
PMID:7240
Isolation, by partial pepsin digestion, of the three collagen-like regions present in subcomponent Clq of the first component of human complement.
Reactome:R-HSA-166753
Conversion of C4 into C4a and C4b
Reactome:R-HSA-166792
Conversion of C2 into C2a and C2b
Reactome:R-HSA-173626
Activation of C1r
Reactome:R-HSA-173631
Activation of C1s
Reactome:R-HSA-8852266
C1-Inh binds Antigen: antibody: C1 complex activated C1r, C1s
Reactome:R-HSA-8852481
Antigen:IgG:C1Q:2xActivated C1R:SERPING1:2xActivated C1S:SERPING1 dissociates
Reactome:R-HSA-9021306
C1-Inh binds and inactivates C1r, C1s
PMID:18083105
The classical complement cascade mediates CNS synapse elimination.
PMID:27033548
Complement and microglia mediate early synapse loss in Alzheimer mouse models.
file:human/C1QB/C1QB-uniprot.txt
UniProtKB P02746 human complement C1q subcomponent subunit B