CPLM 1.0 - Compendium of Protein Lysine Modification
TagContent
CPLM ID CPLM-002829
UniProt Accession
Genbank Protein ID
Genbank Nucleotide ID
Protein Name
 Complement C1s subcomponent 
Protein Synonyms/Alias
 C1 esterase; Complement component 1 subcomponent s; Complement C1s subcomponent heavy chain; Complement C1s subcomponent light chain 
Gene Name
 C1S 
Gene Synonyms/Alias
  
Created Date
 July 27, 2013 
Organism
 Homo sapiens (Human) 
NCBI Taxa ID
 9606 
Lysine Modification
Position
Peptide
Type
References
575SGWGRTEKRDRAVRLacetylation[1]
Reference
 [1] Regulation of cellular metabolism by protein lysine acetylation.
 Zhao S, Xu W, Jiang W, Yu W, Lin Y, Zhang T, Yao J, Zhou L, Zeng Y, Li H, Li Y, Shi J, An W, Hancock SM, He F, Qin L, Chin J, Yang P, Chen X, Lei Q, Xiong Y, Guan KL.
 Science. 2010 Feb 19;327(5968):1000-4. [PMID: 20167786
Functional Description
 C1s B chain is a serine protease that combines with C1q and C1r to form C1, the first component of the classical pathway of the complement system. C1r activates C1s so that it can, in turn, activate C2 and C4. 
Sequence Annotation
 DOMAIN 16 130 CUB 1.
 DOMAIN 131 172 EGF-like; calcium-binding.
 DOMAIN 175 290 CUB 2.
 DOMAIN 292 356 Sushi 1.
 DOMAIN 357 423 Sushi 2.
 DOMAIN 438 680 Peptidase S1.
 ACT_SITE 475 475 Charge relay system.
 ACT_SITE 529 529 Charge relay system.
 ACT_SITE 632 632 Charge relay system.
 METAL 60 60 Calcium.
 METAL 68 68 Calcium.
 METAL 113 113 Calcium.
 METAL 131 131 Calcium.
 METAL 132 132 Calcium; via carbonyl oxygen.
 METAL 134 134 Calcium.
 METAL 149 149 Calcium.
 METAL 150 150 Calcium; via carbonyl oxygen.
 METAL 153 153 Calcium; via carbonyl oxygen.
 MOD_RES 149 149 (3R)-3-hydroxyasparagine.
 CARBOHYD 174 174 N-linked (GlcNAc...).
 CARBOHYD 406 406 N-linked (GlcNAc...).
 DISULFID 65 83
 DISULFID 135 147
 DISULFID 143 156
 DISULFID 158 171
 DISULFID 175 202
 DISULFID 234 251
 DISULFID 294 341
 DISULFID 321 354
 DISULFID 359 403
 DISULFID 386 421
 DISULFID 425 549 Interchain (between heavy and light
 DISULFID 595 618
 DISULFID 628 659  
Keyword
 3D-structure; Calcium; Complement pathway; Complete proteome; Direct protein sequencing; Disulfide bond; EGF-like domain; Glycoprotein; Hydrolase; Hydroxylation; Immunity; Innate immunity; Metal-binding; Polymorphism; Protease; Reference proteome; Repeat; Serine protease; Signal; Sushi. 
Sequence Source
 UniProt (SWISSPROT/TrEMBL); GenBank; EMBL 
Protein Length
 688 AA 
Protein Sequence
MWCIVLFSLL AWVYAEPTMY GEILSPNYPQ AYPSEVEKSW DIEVPEGYGI HLYFTHLDIE 60
LSENCAYDSV QIISGDTEEG RLCGQRSSNN PHSPIVEEFQ VPYNKLQVIF KSDFSNEERF 120
TGFAAYYVAT DINECTDFVD VPCSHFCNNF IGGYFCSCPP EYFLHDDMKN CGVNCSGDVF 180
TALIGEIASP NYPKPYPENS RCEYQIRLEK GFQVVVTLRR EDFDVEAADS AGNCLDSLVF 240
VAGDRQFGPY CGHGFPGPLN IETKSNALDI IFQTDLTGQK KGWKLRYHGD PMPCPKEDTP 300
NSVWEPAKAK YVFRDVVQIT CLDGFEVVEG RVGATSFYST CQSNGKWSNS KLKCQPVDCG 360
IPESIENGKV EDPESTLFGS VIRYTCEEPY YYMENGGGGE YHCAGNGSWV NEVLGPELPK 420
CVPVCGVPRE PFEEKQRIIG GSDADIKNFP WQVFFDNPWA GGALINEYWV LTAAHVVEGN 480
REPTMYVGST SVQTSRLAKS KMLTPEHVFI HPGWKLLEVP EGRTNFDNDI ALVRLKDPVK 540
MGPTVSPICL PGTSSDYNLM DGDLGLISGW GRTEKRDRAV RLKAARLPVA PLRKCKEVKV 600
EKPTADAEAY VFTPNMICAG GEKGMDSCKG DSGGAFAVQD PNDKTKFYAA GLVSWGPQCG 660
TYGLYTRVKN YVDWIMKTMQ ENSTPRED 688 
Gene Ontology
 GO:0005576; C:extracellular region; TAS:Reactome.
 GO:0005509; F:calcium ion binding; IEA:InterPro.
 GO:0004252; F:serine-type endopeptidase activity; IDA:UniProtKB.
 GO:0006958; P:complement activation, classical pathway; TAS:Reactome.
 GO:0045087; P:innate immune response; TAS:Reactome.
 GO:0006508; P:proteolysis; IEA:UniProtKB-KW. 
Interpro
 IPR000859; CUB_dom.
 IPR001881; EGF-like_Ca-bd.
 IPR000152; EGF-type_Asp/Asn_hydroxyl_site.
 IPR018097; EGF_Ca-bd_CS.
 IPR024175; Pept_S1A_C1r/C1S/mannan-bd.
 IPR001254; Peptidase_S1.
 IPR018114; Peptidase_S1_AS.
 IPR001314; Peptidase_S1A.
 IPR000436; Sushi_SCR_CCP.
 IPR009003; Trypsin-like_Pept_dom. 
Pfam
 PF00431; CUB
 PF07645; EGF_CA
 PF00084; Sushi
 PF00089; Trypsin 
SMART
 SM00032; CCP
 SM00042; CUB
 SM00179; EGF_CA
 SM00020; Tryp_SPc 
PROSITE
 PS00010; ASX_HYDROXYL
 PS01180; CUB
 PS00022; EGF_1
 PS01186; EGF_2
 PS50026; EGF_3
 PS01187; EGF_CA
 PS50923; SUSHI
 PS50240; TRYPSIN_DOM
 PS00134; TRYPSIN_HIS
 PS00135; TRYPSIN_SER 
PRINTS
 PR00722; CHYMOTRYPSIN.