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- FUNCTION: Protein C is a vitamin K-dependent serine protease that regulates blood coagulation by inactivating factors Va and VIIIa in the presence of calcium ions and phospholipids.
- CATALYTIC ACTIVITY: Degradation of blood coagulation factors Va and VIIIa.
- SUBUNIT: Synthesized as a single chain precursor, which is cleaved into a light chain and a heavy chain held together by a disulfide bond. The enzyme is then activated by thrombin, which cleaves a tetradecapeptide from the amino end of the heavy chain; this reaction, which occurs at the surface of endothelial cells, is strongly promoted by thrombomodulin.
- TISSUE SPECIFICITY: Plasma; synthesized in the liver.
- PTM: The vitamin K-dependent, enzymatic carboxylation of some Glu residues allows the modified protein to bind calcium.
- MISCELLANEOUS: Calcium also binds, with stronger affinity to another site, beyond the GLA domain. This GLA-independent binding site is necessary for the recognition of the thrombin-thrombomodulin complex.
- SIMILARITY: Belongs to the peptidase S1 family [view classification].
- SIMILARITY: Contains 2 EGF-like domains.
- SIMILARITY: Contains 1 Gla (gamma-carboxy-glutamate) domain.
- SIMILARITY: Contains 1 peptidase S1 domain [view classification].
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Copyrighted by the UniProt Consortium, see http://www.uniprot.org/terms.
Distributed under the Creative Commons Attribution-NoDerivs License.
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| Length: 461 AA [This is the length of the unprocessed precursor] |
Molecular weight: 51912 Da [This is the MW of the unprocessed precursor] |
CRC64: 8A4CF93664EDACD5 [This is a checksum on the sequence] |
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10 20 30 40 50 60
MWQFRIFLLF ASTWGISGVS AHPDPVFSSS EGAHQVLRVR RANSFLEEVR AGSLERECME
70 80 90 100 110 120
EICDFEEAQE IFQNVEDTLA FWIKYFDGDQ CSTPPLDHQC DSPCCGHGTC IDGLGGFSCS
130 140 150 160 170 180
CDKGWEGRFC QQEMGFQDCR VKNGGCYHYC LEETRGRRCR CAPGYELADD HMHCRPTVNF
190 200 210 220 230 240
PCGKLWKRTD KKRKNFKRDI DPEDEELELG PRIVNGTLTK QGDSPWQAIL LDSKKKLACG
250 260 270 280 290 300
GVLIHTSWVL TAAHCLESSK KLTVRLGEYD LRRRDPWELD LDIKEVLVHP NYTRSNSDND
310 320 330 340 350 360
IALLRLSQPA TLSKTIVPIC LPNSGLAQEL SQAGQETVVT GWGYQSDKVK DGRRNRTFIL
370 380 390 400 410 420
TFIRIPLAAR NDCMQVMNNV VSENMLCAGI IGDTRDACDG DSGGPMVVFF RGTWFLVGLV
430 440 450 460
SWGEGCGHLN NYGVYTKVGS YLKWIHSYIG ERDVSLKSPK L
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P31394 in FASTA format |
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