Complement C1q subcomponent subunit B

Details

Name
Complement C1q subcomponent subunit B
Synonyms
  • Complement C1q subcomponent subunit B precursor
Gene Name
C1QB
Organism
Humans
Amino acid sequence
>lcl|BSEQ0016676|Complement C1q subcomponent subunit B
MMMKIPWGSIPVLMLLLLLGLIDISQAQLSCTGPPAIPGIPGIPGTPGPDGQPGTPGIKG
EKGLPGLAGDHGEFGEKGDPGIPGNPGKVGPKGPMGPKGGPGAPGAPGPKGESGDYKATQ
KIAFSATRTINVPLRRDQTIRFDHVITNMNNNYEPRSGKFTCKVPGLYYFTYHASSRGNL
CVNLMRGRERAQKVVTFCDYAYNTFQVTTGGMVLKLEQGENVFLQATDKNSLLGMEGANS
IFSGFLLFPDMEA
Number of residues
253
Molecular Weight
26721.62
Theoretical pI
8.87
GO Classification
Processes
complement activation / complement activation, classical pathway / innate immune response / inner ear development
Components
blood microparticle / collagen trimer / complement component C1 complex / extracellular exosome / extracellular region
General Function
Not Available
Specific Function
C1q associates with the proenzymes C1r and C1s to yield C1, the first component of the serum complement system. The collagen-like regions of C1q interact with the Ca(2+)-dependent C1r(2)C1s(2) proenzyme complex, and efficient activation of C1 takes place on interaction of the globular heads of C1q with the Fc regions of IgG or IgM antibody present in immune complexes.
Pfam Domain Function
Transmembrane Regions
Not Available
Cellular Location
Secreted
Gene sequence
>lcl|BSEQ0016677|Complement C1q subcomponent subunit B (C1QB)
ATGATGATGAAGATCCCATGGGGCAGCATCCCAGTACTGATGTTGCTCCTGCTCCTGGGC
CTAATCGATATCTCCCAGGCCCAGCTCAGCTGCACCGGGCCCCCAGCCATCCCTGGCATC
CCGGGTATCCCTGGGACACCTGGCCCCGATGGCCAACCTGGGACCCCAGGGATAAAAGGA
GAGAAAGGGCTTCCAGGGCTGGCTGGAGACCATGGTGAGTTCGGAGAGAAGGGAGACCCA
GGGATTCCTGGGAATCCAGGAAAAGTCGGCCCCAAGGGCCCCATGGGCCCTAAAGGTGGC
CCAGGGGCCCCTGGAGCCCCAGGCCCCAAAGGTGAATCGGGAGACTACAAGGCCACCCAG
AAAATCGCCTTCTCTGCCACAAGAACCATCAACGTCCCCCTGCGCCGGGACCAGACCATC
CGCTTCGACCACGTGATCACCAACATGAACAACAATTATGAGCCCCGCAGTGGCAAGTTC
ACCTGCAAGGTGCCCGGTCTCTACTACTTCACCTACCACGCCAGCTCTCGAGGGAACCTG
TGCGTGAACCTCATGCGTGGCCGGGAGCGTGCACAGAAGGTGGTCACCTTCTGTGACTAT
GCCTACAACACCTTCCAGGTCACCACCGGTGGCATGGTCCTCAAGCTGGAGCAGGGGGAG
AACGTCTTCCTGCAGGCCACCGACAAGAACTCACTACTGGGCATGGAGGGTGCCAACAGC
ATCTTTTCCGGGTTCCTGCTCTTTCCAGATATGGAGGCCTGA
Chromosome Location
1
Locus
1p36.12
External Identifiers
ResourceLink
UniProtKB IDP02746
UniProtKB Entry NameC1QB_HUMAN
GenBank Protein ID573114
GenBank Gene IDX03084
GenAtlas IDC1QB
HGNC IDHGNC:1242
General References
  1. Gregory SG, Barlow KF, McLay KE, Kaul R, Swarbreck D, Dunham A, Scott CE, Howe KL, Woodfine K, Spencer CC, Jones MC, Gillson C, Searle S, Zhou Y, Kokocinski F, McDonald L, Evans R, Phillips K, Atkinson A, Cooper R, Jones C, Hall RE, Andrews TD, Lloyd C, Ainscough R, Almeida JP, Ambrose KD, Anderson F, Andrew RW, Ashwell RI, Aubin K, Babbage AK, Bagguley CL, Bailey J, Beasley H, Bethel G, Bird CP, Bray-Allen S, Brown JY, Brown AJ, Buckley D, Burton J, Bye J, Carder C, Chapman JC, Clark SY, Clarke G, Clee C, Cobley V, Collier RE, Corby N, Coville GJ, Davies J, Deadman R, Dunn M, Earthrowl M, Ellington AG, Errington H, Frankish A, Frankland J, French L, Garner P, Garnett J, Gay L, Ghori MR, Gibson R, Gilby LM, Gillett W, Glithero RJ, Grafham DV, Griffiths C, Griffiths-Jones S, Grocock R, Hammond S, Harrison ES, Hart E, Haugen E, Heath PD, Holmes S, Holt K, Howden PJ, Hunt AR, Hunt SE, Hunter G, Isherwood J, James R, Johnson C, Johnson D, Joy A, Kay M, Kershaw JK, Kibukawa M, Kimberley AM, King A, Knights AJ, Lad H, Laird G, Lawlor S, Leongamornlert DA, Lloyd DM, Loveland J, Lovell J, Lush MJ, Lyne R, Martin S, Mashreghi-Mohammadi M, Matthews L, Matthews NS, McLaren S, Milne S, Mistry S, Moore MJ, Nickerson T, O'Dell CN, Oliver K, Palmeiri A, Palmer SA, Parker A, Patel D, Pearce AV, Peck AI, Pelan S, Phelps K, Phillimore BJ, Plumb R, Rajan J, Raymond C, Rouse G, Saenphimmachak C, Sehra HK, Sheridan E, Shownkeen R, Sims S, Skuce CD, Smith M, Steward C, Subramanian S, Sycamore N, Tracey A, Tromans A, Van Helmond Z, Wall M, Wallis JM, White S, Whitehead SL, Wilkinson JE, Willey DL, Williams H, Wilming L, Wray PW, Wu Z, Coulson A, Vaudin M, Sulston JE, Durbin R, Hubbard T, Wooster R, Dunham I, Carter NP, McVean G, Ross MT, Harrow J, Olson MV, Beck S, Rogers J, Bentley DR, Banerjee R, Bryant SP, Burford DC, Burrill WD, Clegg SM, Dhami P, Dovey O, Faulkner LM, Gribble SM, Langford CF, Pandian RD, Porter KM, Prigmore E: The DNA sequence and biological annotation of human chromosome 1. Nature. 2006 May 18;441(7091):315-21. [PubMed:16710414]
  2. Gerhard DS, Wagner L, Feingold EA, Shenmen CM, Grouse LH, Schuler G, Klein SL, Old S, Rasooly R, Good P, Guyer M, Peck AM, Derge JG, Lipman D, Collins FS, Jang W, Sherry S, Feolo M, Misquitta L, Lee E, Rotmistrovsky K, Greenhut SF, Schaefer CF, Buetow K, Bonner TI, Haussler D, Kent J, Kiekhaus M, Furey T, Brent M, Prange C, Schreiber K, Shapiro N, Bhat NK, Hopkins RF, Hsie F, Driscoll T, Soares MB, Casavant TL, Scheetz TE, Brown-stein MJ, Usdin TB, Toshiyuki S, Carninci P, Piao Y, Dudekula DB, Ko MS, Kawakami K, Suzuki Y, Sugano S, Gruber CE, Smith MR, Simmons B, Moore T, Waterman R, Johnson SL, Ruan Y, Wei CL, Mathavan S, Gunaratne PH, Wu J, Garcia AM, Hulyk SW, Fuh E, Yuan Y, Sneed A, Kowis C, Hodgson A, Muzny DM, McPherson J, Gibbs RA, Fahey J, Helton E, Ketteman M, Madan A, Rodrigues S, Sanchez A, Whiting M, Madari A, Young AC, Wetherby KD, Granite SJ, Kwong PN, Brinkley CP, Pearson RL, Bouffard GG, Blakesly RW, Green ED, Dickson MC, Rodriguez AC, Grimwood J, Schmutz J, Myers RM, Butterfield YS, Griffith M, Griffith OL, Krzywinski MI, Liao N, Morin R, Palmquist D, Petrescu AS, Skalska U, Smailus DE, Stott JM, Schnerch A, Schein JE, Jones SJ, Holt RA, Baross A, Marra MA, Clifton S, Makowski KA, Bosak S, Malek J: The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC). Genome Res. 2004 Oct;14(10B):2121-7. [PubMed:15489334]
  3. Reid KB: Molecular cloning and characterization of the complementary DNA and gene coding for the B-chain of subcomponent C1q of the human complement system. Biochem J. 1985 Nov 1;231(3):729-35. [PubMed:3000358]
  4. Reid KB, Thompson EO: 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. Biochem J. 1978 Sep 1;173(3):863-8. [PubMed:708376]
  5. Reid KB: Complete amino acid sequences of the three collagen-like regions present in subcomponent C1q of the first component of human complement. Biochem J. 1979 May 1;179(2):367-71. [PubMed:486087]
  6. Reid KB, Gagnon J, Frampton J: Completion of the amino acid sequences of the A and B chains of subcomponent C1q of the first component of human complement. Biochem J. 1982 Jun 1;203(3):559-69. [PubMed:6981411]
  7. Reid KB, Bentley DR, Wood KJ: Cloning and characterization of the complementary DNA for the B chain of normal human serum C1q. Philos Trans R Soc Lond B Biol Sci. 1984 Sep 6;306(1129):345-54. [PubMed:6208566]
  8. Yonemasu K, Shinkai H, Sasaki T: Comparable content of hydroxylysine-linked glycosides in subcomponents C1q of the first component of human, bovine and mouse complement. Coll Relat Res. 1981 Jul;1(4):385-90. [PubMed:6286235]
  9. Gaboriaud C, Juanhuix J, Gruez A, Lacroix M, Darnault C, Pignol D, Verger D, Fontecilla-Camps JC, Arlaud GJ: The crystal structure of the globular head of complement protein C1q provides a basis for its versatile recognition properties. J Biol Chem. 2003 Nov 21;278(47):46974-82. Epub 2003 Sep 5. [PubMed:12960167]
  10. Petry F: Molecular basis of hereditary C1q deficiency. Immunobiology. 1998 Aug;199(2):286-94. [PubMed:9777412]
  11. Petry F, Hauptmann G, Goetz J, Grosshans E, Loos M: Molecular basis of a new type of C1q-deficiency associated with a non-functional low molecular weight (LMW) C1q: parallels and differences to other known genetic C1q-defects. Immunopharmacology. 1997 Dec;38(1-2):189-201. [PubMed:9476130]
  12. Sjoblom T, Jones S, Wood LD, Parsons DW, Lin J, Barber TD, Mandelker D, Leary RJ, Ptak J, Silliman N, Szabo S, Buckhaults P, Farrell C, Meeh P, Markowitz SD, Willis J, Dawson D, Willson JK, Gazdar AF, Hartigan J, Wu L, Liu C, Parmigiani G, Park BH, Bachman KE, Papadopoulos N, Vogelstein B, Kinzler KW, Velculescu VE: The consensus coding sequences of human breast and colorectal cancers. Science. 2006 Oct 13;314(5797):268-74. Epub 2006 Sep 7. [PubMed:16959974]

Drug Relations

Drug Relations
DrugBank IDNameDrug groupPharmacological action?ActionsDetails
DB00002CetuximabapprovedunknownDetails
DB00005Etanerceptapproved, investigationalunknownDetails
DB00054AbciximabapprovedunknownDetails
DB00056Gemtuzumab ozogamicinapproved, investigationalunknownDetails
DB00072Trastuzumabapproved, investigationalunknownDetails
DB00074Basiliximabapproved, investigationalunknownDetails
DB00075Muromonabapproved, investigationalunknownDetails
DB00078Ibritumomab tiuxetanapproved, investigationalunknownDetails
DB00081Tositumomabapproved, investigationalunknownDetails
DB00087Alemtuzumabapproved, investigationalunknownDetails
DB00092Alefaceptapproved, investigational, withdrawnunknownDetails
DB00095Efalizumabapproved, investigationalunknownDetails
DB00108Natalizumabapproved, investigationalunknownDetails
DB00110Palivizumabapproved, investigationalunknownDetails
DB00111Daclizumabinvestigational, withdrawnunknownDetails
DB00112Bevacizumabapproved, investigationalunknownDetails
DB01593Zincapproved, investigationalunknownDetails
DB14487Zinc acetateapproved, investigationalunknownDetails
DB14533Zinc chlorideapproved, investigationalunknownDetails