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Protein C, also known as autoprothrombin IIA and blood coagulation factor XIV, [5]: 6822 [6] is a zymogen, that is, an inactive enzyme.The activated form plays an important role in regulating anticoagulation, inflammation, and cell death and maintaining the permeability of blood vessel walls in humans and other animals.
Protein C is vitamin K-dependent. Patients with Protein C deficiency are at an increased risk of developing skin necrosis while on warfarin. Protein C has a short half life (8 hour) compared with other vitamin K-dependent factors and therefore is rapidly depleted with warfarin initiation, resulting in a transient hypercoagulable state.
The N-end rule is a rule that governs the rate of protein degradation through recognition of the N-terminal residue of proteins. The rule states that the N-terminal amino acid of a protein determines its half-life (time after which half of the total amount of a given polypeptide is degraded).
Absorption half-life 1 h, elimination half-life 12 h. Biological half-life (elimination half-life, pharmacological half-life) is the time taken for concentration of a biological substance (such as a medication) to decrease from its maximum concentration (C max) to half of C max in the blood plasma.
In this situation it is generally uncommon to talk about half-life in the first place, but sometimes people will describe the decay in terms of its "first half-life", "second half-life", etc., where the first half-life is defined as the time required for decay from the initial value to 50%, the second half-life is from 50% to 25%, and so on.
The hydrolysis of a protein (red) by the nucleophilic attack of water (blue). The uncatalysed half-life is several hundred years. Proteolysis is the breakdown of proteins into smaller polypeptides or amino acids. Uncatalysed, the hydrolysis of peptide bonds is extremely slow, taking hundreds of years.
10544 19124 Ensembl ENSG00000101000 ENSMUSG00000027611 UniProt Q9UNN8 Q64695 RefSeq (mRNA) NM_006404 NM_011171 RefSeq (protein) NP_006395 NP_035301 Location (UCSC) Chr 20: 35.17 – 35.22 Mb Chr 2: 155.59 – 155.6 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Endothelial protein C receptor (EPCR) also known as activated protein C receptor (APC receptor) is a protein that in humans ...
The factor VIII protein has a half-life of 12 hours in the blood stream when stabilized by the von Willebrand factor. [20] No longer protected by vWF, activated FVIII is proteolytically inactivated in the process (most prominently by activated protein C and factor IXa) and quickly cleared from the blood stream.