IC1_HUMAN - dbPTM
IC1_HUMAN - PTM Information in dbPTM
Basic Information of Protein
UniProt ID IC1_HUMAN
UniProt AC P05155
Protein Name Plasma protease C1 inhibitor
Gene Name SERPING1
Organism Homo sapiens (Human).
Sequence Length 500
Subcellular Localization Secreted.
Protein Description Activation of the C1 complex is under control of the C1-inhibitor. It forms a proteolytically inactive stoichiometric complex with the C1r or C1s proteases. May play a potentially crucial role in regulating important physiological pathways including complement activation, blood coagulation, fibrinolysis and the generation of kinins. Very efficient inhibitor of FXIIa. Inhibits chymotrypsin and kallikrein..
Protein Sequence MASRLTLLTLLLLLLAGDRASSNPNATSSSSQDPESLQDRGEGKVATTVISKMLFVEPILEVSSLPTTNSTTNSATKITANTTDEPTTQPTTEPTTQPTIQPTQPTTQLPTDSPTQPTTGSFCPGPVTLCSDLESHSTEAVLGDALVDFSLKLYHAFSAMKKVETNMAFSPFSIASLLTQVLLGAGENTKTNLESILSYPKDFTCVHQALKGFTTKGVTSVSQIFHSPDLAIRDTFVNASRTLYSSSPRVLSNNSDANLELINTWVAKNTNNKISRLLDSLPSDTRLVLLNAIYLSAKWKTTFDPKKTRMEPFHFKNSVIKVPMMNSKKYPVAHFIDQTLKAKVGQLQLSHNLSLVILVPQNLKHRLEDMEQALSPSVFKAIMEKLEMSKFQPTLLTLPRIKVTTSQDMLSIMEKLEFFDFSYDLNLCGLTEDPDLQVSAMQHQTVLELTETGVEAAAASAISVARTLLVFEVQQPFLFVLWDQQHKFPVFMGRVYDPRA
Overview of Protein Modification Sites with Functional and Structural Information
Experimental Post-Translational Modification Sites

* ASA = Accessible Surface Area

Locations Modification Substrate Peptides
&
Secondary Structure
ASA (%) Reference Orthologous
Protein Cluster
4Methylation----MASRLTLLTLL
----CHHHHHHHHHH
23.3524391367
22PhosphorylationLAGDRASSNPNATSS
HHCCHHHCCCCCCCC
56.1525954137
25N-linked_GlycosylationDRASSNPNATSSSSQ
CHHHCCCCCCCCCCC
61.1622171320
25N-linked_GlycosylationDRASSNPNATSSSSQ
CHHHCCCCCCCCCCC
61.1622171320
27O-linked_GlycosylationASSNPNATSSSSQDP
HHCCCCCCCCCCCCH
35.46OGP
28O-linked_GlycosylationSSNPNATSSSSQDPE
HCCCCCCCCCCCCHH
26.30OGP
28PhosphorylationSSNPNATSSSSQDPE
HCCCCCCCCCCCCHH
26.3025954137
30O-linked_GlycosylationNPNATSSSSQDPESL
CCCCCCCCCCCHHHH
31.61OGP
31O-linked_GlycosylationPNATSSSSQDPESLQ
CCCCCCCCCCHHHHH
40.32OGP
36PhosphorylationSSSQDPESLQDRGEG
CCCCCHHHHHHCCCC
36.4025954137
47O-linked_GlycosylationRGEGKVATTVISKML
CCCCHHHHHHHHHHH
25.2822171320
48O-linked_GlycosylationGEGKVATTVISKMLF
CCCHHHHHHHHHHHC
13.2022171320
48O-linked_GlycosylationGEGKVATTVISKMLF
CCCHHHHHHHHHHHC
13.2022171320
51PhosphorylationKVATTVISKMLFVEP
HHHHHHHHHHHCCCC
14.0025954137
63O-linked_GlycosylationVEPILEVSSLPTTNS
CCCEEEECCCCCCCC
19.44OGP
64O-linked_GlycosylationEPILEVSSLPTTNST
CCEEEECCCCCCCCC
43.473756141
64O-linked_GlycosylationEPILEVSSLPTTNST
CCEEEECCCCCCCCC
43.47UniProtKB CARBOHYD
67O-linked_GlycosylationLEVSSLPTTNSTTNS
EEECCCCCCCCCCCC
43.85OGP
68O-linked_GlycosylationEVSSLPTTNSTTNSA
EECCCCCCCCCCCCC
25.82OGP
69N-linked_GlycosylationVSSLPTTNSTTNSAT
ECCCCCCCCCCCCCE
39.583756141
69N-linked_GlycosylationVSSLPTTNSTTNSAT
ECCCCCCCCCCCCCE
39.5816335952
70O-linked_GlycosylationSSLPTTNSTTNSATK
CCCCCCCCCCCCCEE
34.22OGP
71O-linked_GlycosylationSLPTTNSTTNSATKI
CCCCCCCCCCCCEEE
31.873756141
71O-linked_GlycosylationSLPTTNSTTNSATKI
CCCCCCCCCCCCEEE
31.87UniProtKB CARBOHYD
72O-linked_GlycosylationLPTTNSTTNSATKIT
CCCCCCCCCCCEEEE
27.31OGP
76O-linked_GlycosylationNSTTNSATKITANTT
CCCCCCCEEEEECCC
23.85OGP
81N-linked_GlycosylationSATKITANTTDEPTT
CCEEEEECCCCCCCC
34.5619159218
81N-linked_GlycosylationSATKITANTTDEPTT
CCEEEEECCCCCCCC
34.563756141
83O-linked_GlycosylationTKITANTTDEPTTQP
EEEEECCCCCCCCCC
37.873756141
83O-linked_GlycosylationTKITANTTDEPTTQP
EEEEECCCCCCCCCC
37.87UniProtKB CARBOHYD
88O-linked_GlycosylationNTTDEPTTQPTTEPT
CCCCCCCCCCCCCCC
43.18UniProtKB CARBOHYD
88O-linked_GlycosylationNTTDEPTTQPTTEPT
CCCCCCCCCCCCCCC
43.183756141
92O-linked_GlycosylationEPTTQPTTEPTTQPT
CCCCCCCCCCCCCCC
46.80UniProtKB CARBOHYD
92O-linked_GlycosylationEPTTQPTTEPTTQPT
CCCCCCCCCCCCCCC
46.803756141
96O-linked_GlycosylationQPTTEPTTQPTIQPT
CCCCCCCCCCCCCCC
43.18UniProtKB CARBOHYD
96O-linked_GlycosylationQPTTEPTTQPTIQPT
CCCCCCCCCCCCCCC
43.183756141
113O-linked_GlycosylationTTQLPTDSPTQPTTG
CCCCCCCCCCCCCCC
32.12OGP
115O-linked_GlycosylationQLPTDSPTQPTTGSF
CCCCCCCCCCCCCCC
51.65OGP
118O-linked_GlycosylationTDSPTQPTTGSFCPG
CCCCCCCCCCCCCCC
33.69OGP
119O-linked_GlycosylationDSPTQPTTGSFCPGP
CCCCCCCCCCCCCCC
37.20OGP
176PhosphorylationFSPFSIASLLTQVLL
CCHHHHHHHHHHHHH
23.4224719451
179PhosphorylationFSIASLLTQVLLGAG
HHHHHHHHHHHHCCC
23.1724719451
189PhosphorylationLLGAGENTKTNLESI
HHCCCCCCCCCHHHH
34.6424719451
198PhosphorylationTNLESILSYPKDFTC
CCHHHHHCCCCCCHH
37.4117192257
199PhosphorylationNLESILSYPKDFTCV
CHHHHHCCCCCCHHH
15.7423312004
238N-linked_GlycosylationAIRDTFVNASRTLYS
CHHHHCCCHHHHHHC
28.1817488724
238N-linked_GlycosylationAIRDTFVNASRTLYS
CHHHHCCCHHHHHHC
28.1817488724
253N-linked_GlycosylationSSPRVLSNNSDANLE
CCCCHHCCCCCCCHH
48.1117623646
253N-linked_GlycosylationSSPRVLSNNSDANLE
CCCCHHCCCCCCCHH
48.1118638581
272N-linked_GlycosylationWVAKNTNNKISRLLD
HHHHHCCCHHHHHHH
40.79UniProtKB CARBOHYD
294PhosphorylationLVLLNAIYLSAKWKT
HHHHHHHHHHHCCCC
7.68-
296PhosphorylationLLNAIYLSAKWKTTF
HHHHHHHHHCCCCCC
15.72-
316AcetylationRMEPFHFKNSVIKVP
CCCCCCCCCCEEEEE
39.48164205
321AcetylationHFKNSVIKVPMMNSK
CCCCCEEEEECCCCC
37.82164209
350PhosphorylationKVGQLQLSHNLSLVI
HHCEEECCCCEEEEE
9.4329888752
352N-linked_GlycosylationGQLQLSHNLSLVILV
CEEECCCCEEEEEEE
28.1317623646
352N-linked_GlycosylationGQLQLSHNLSLVILV
CEEECCCCEEEEEEE
28.1319838169
354PhosphorylationLQLSHNLSLVILVPQ
EECCCCEEEEEEEEC
26.3829888752
375PhosphorylationEDMEQALSPSVFKAI
HHHHHHHCHHHHHHH
20.39-
385AcetylationVFKAIMEKLEMSKFQ
HHHHHHHHHHHHCCC
32.1627178108
389PhosphorylationIMEKLEMSKFQPTLL
HHHHHHHHCCCCCEE
22.4229396449
397PhosphorylationKFQPTLLTLPRIKVT
CCCCCEECCCCEEEE
37.5224719451
460PhosphorylationGVEAAAASAISVART
HHHHHHHHHHHHHHH
22.7824275569

Upstream regulatory proteins (kinases for phosphorylation sites, E3 ubiquitin ligases of ubiquitination sites, ...)
Modified Location Modified Residue Modification Type of Upstream Proteins Gene Name of Upstream Proteins UniProt AC of Upstream Proteins Sources

Oops, there are no upstream regulatory protein records of IC1_HUMAN !!

Functions of PTM Sites
Modified Location Modified Residue Modification Function Reference

Oops, there are no descriptions of PTM sites of IC1_HUMAN !!

Disease-associated PTM Sites based on SAP

* Distance = the distance between SAP position and PTM sites.

Modified Location Modification Variant Position
(Distance <= 10)
Residue Change SAP Related Disease Reference

Oops, there are no SNP-PTM records of IC1_HUMAN !!

Protein-Protein Interaction
Interacting Protein Gene Name Interaction Type PPI Reference Domain-Domain Interactions
LYAM2_HUMANSELEphysical
14568956
LYAM3_HUMANSELPphysical
14568956
C1S_HUMANC1Sphysical
6604523
MASP1_HUMANMASP1physical
10946292
MASP2_HUMANMASP2physical
10946292
TPA_HUMANPLATphysical
28514442
ARFG2_HUMANARFGAP2physical
28514442
GRN_HUMANGRNphysical
28514442

Drug and Disease Associations
Kegg Disease
There are no disease associations of PTM sites.
OMIM Disease
106100Hereditary angioedema (HAE)
Kegg Drug
There are no disease associations of PTM sites.
DrugBank
There are no disease associations of PTM sites.
Regulatory Network of IC1_HUMAN

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Related Literatures of Post-Translational Modification
N-linked Glycosylation
ReferencePubMed
"C1 inhibitor serpin domain structure reveals the likely mechanism ofheparin potentiation and conformational disease.";
Beinrohr L., Harmat V., Dobo J., Loerincz Z., Gal P., Zavodszky P.;
J. Biol. Chem. 282:21100-21109(2007).
Cited for: X-RAY CRYSTALLOGRAPHY (2.35 ANGSTROMS) OF 119-500, DISULFIDE BONDS,AND GLYCOSYLATION AT ASN-238.
"Human urinary glycoproteomics; attachment site specific analysis ofN-and O-linked glycosylations by CID and ECD.";
Halim A., Nilsson J., Ruetschi U., Hesse C., Larson G.;
Mol. Cell. Proteomics 0:0-0(2011).
Cited for: GLYCOSYLATION AT ASN-25; THR-47 AND THR-48, STRUCTURE OFCARBOHYDRATES, AND MASS SPECTROMETRY.
"Enrichment of glycopeptides for glycan structure and attachment siteidentification.";
Nilsson J., Rueetschi U., Halim A., Hesse C., Carlsohn E.,Brinkmalm G., Larson G.;
Nat. Methods 6:809-811(2009).
Cited for: GLYCOSYLATION [LARGE SCALE ANALYSIS] AT ASN-352, STRUCTURE OFCARBOHYDRATES, AND MASS SPECTROMETRY.
"Glycoproteomics analysis of human liver tissue by combination ofmultiple enzyme digestion and hydrazide chemistry.";
Chen R., Jiang X., Sun D., Han G., Wang F., Ye M., Wang L., Zou H.;
J. Proteome Res. 8:651-661(2009).
Cited for: GLYCOSYLATION [LARGE SCALE ANALYSIS] AT ASN-69; ASN-81; ASN-238;ASN-253 AND ASN-352, AND MASS SPECTROMETRY.
"Human plasma N-glycoproteome analysis by immunoaffinity subtraction,hydrazide chemistry, and mass spectrometry.";
Liu T., Qian W.-J., Gritsenko M.A., Camp D.G. II, Monroe M.E.,Moore R.J., Smith R.D.;
J. Proteome Res. 4:2070-2080(2005).
Cited for: GLYCOSYLATION [LARGE SCALE ANALYSIS] AT ASN-25; ASN-69; ASN-238;ASN-253 AND ASN-352, AND MASS SPECTROMETRY.
"N-linked glycosylation at Asn3 and the positively charged residueswithin the amino-terminal domain of the c1 inhibitor are required forinteraction of the C1 Inhibitor with Salmonella enterica serovartyphimurium lipopolysaccharide and lipid A.";
Liu D., Cramer C.C., Scafidi J., Davis A.E. III;
Infect. Immun. 73:4478-4487(2005).
Cited for: GLYCOSYLATION AT ASN-25.
"Screening for N-glycosylated proteins by liquid chromatography massspectrometry.";
Bunkenborg J., Pilch B.J., Podtelejnikov A.V., Wisniewski J.R.;
Proteomics 4:454-465(2004).
Cited for: GLYCOSYLATION [LARGE SCALE ANALYSIS] AT ASN-25; ASN-238; ASN-253 ANDASN-352, AND MASS SPECTROMETRY.
"Identification and quantification of N-linked glycoproteins usinghydrazide chemistry, stable isotope labeling and mass spectrometry.";
Zhang H., Li X.-J., Martin D.B., Aebersold R.;
Nat. Biotechnol. 21:660-666(2003).
Cited for: GLYCOSYLATION AT ASN-253.
"Human C1 inhibitor: primary structure, cDNA cloning, and chromosomallocalization.";
Bock S.C., Skriver K., Nielsen E., Thoegersen H.-C., Wiman B.,Donaldson V.H., Eddy R.L., Marrinan J., Radziejewska E., Huber R.,Shows T.B., Magnusson S.;
Biochemistry 25:4292-4301(1986).
Cited for: NUCLEOTIDE SEQUENCE [MRNA], PARTIAL PROTEIN SEQUENCE, ANDGLYCOSYLATION AT ASN-25; THR-48; SER-64; ASN-69; THR-71; ASN-81;THR-83; THR-88; THR-92; THR-96; ASN-238; ASN-253 AND ASN-352.
O-linked Glycosylation
ReferencePubMed
"Human urinary glycoproteomics; attachment site specific analysis ofN-and O-linked glycosylations by CID and ECD.";
Halim A., Nilsson J., Ruetschi U., Hesse C., Larson G.;
Mol. Cell. Proteomics 0:0-0(2011).
Cited for: GLYCOSYLATION AT ASN-25; THR-47 AND THR-48, STRUCTURE OFCARBOHYDRATES, AND MASS SPECTROMETRY.
"Human C1 inhibitor: primary structure, cDNA cloning, and chromosomallocalization.";
Bock S.C., Skriver K., Nielsen E., Thoegersen H.-C., Wiman B.,Donaldson V.H., Eddy R.L., Marrinan J., Radziejewska E., Huber R.,Shows T.B., Magnusson S.;
Biochemistry 25:4292-4301(1986).
Cited for: NUCLEOTIDE SEQUENCE [MRNA], PARTIAL PROTEIN SEQUENCE, ANDGLYCOSYLATION AT ASN-25; THR-48; SER-64; ASN-69; THR-71; ASN-81;THR-83; THR-88; THR-92; THR-96; ASN-238; ASN-253 AND ASN-352.

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