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19152 Ensembl ENSG00000277804 ENSG00000196415 ENSMUSG00000057729 UniProt P24158 Q61096 RefSeq (mRNA) NM_002777 NM_011178 RefSeq (protein) NP_002768 NP_035308 Location (UCSC) Chr 19: 0.84 – 0.85 Mb Chr 10: 79.71 – 79.72 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Proteinase 3, also known as PRTN3, is an enzyme that in humans is encoded by the PRTN3 gene. Function PRTN3 is a ...
The serine-OH attacks the carbonyl carbon, and the nitrogen of the histidine accepts the hydrogen from the -OH of the [serine] and a pair of electrons from the double bond of the carbonyl oxygen moves to the oxygen. As a result, a tetrahedral intermediate is generated. The bond joining the nitrogen and the carbon in the peptide bond is now broken.
Factor D is a serine protease present in blood and tissue in an active sequence but self-inhibited conformation. The only known natural substrate of Factor D is Factor B, and cleavage of the Arg 234-Lys 235 scissile bond in Factor B results in two Factor B fragments, Ba and Bb.
Elevated levels of PAI-1 also seem to increase the risk of atherothrombotic events and may also promote vascular disease. [6] Plasminogen activator inhibitor-2 (PAI-2) is a serine protease that inactivates tPA and uPA. PAI-2 is produced by the placenta and only found in high quantities in the blood during pregnancy. [7]
Hyperproteinemia is the state of having overly high levels of protein in the blood. This can occur due to monoclonal gammopathies such as multiple myeloma and after intravenous immunoglobulin has been given. [1] It can result in a falsely low appearing sodium level (hyponatremia). [1]
Factor XI (FXI) is produced by the liver and circulates as a homo-dimer in its inactive form. [9] The plasma half-life of FXI is approximately 52 hours. The zymogen factor is activated into factor XIa by factor XIIa (FXIIa), thrombin, and FXIa itself; due to its activation by FXIIa, FXI is a member of the "contact pathway" (which includes HMWK, prekallikrein, factor XII, factor XI, and factor IX).
Serine ball and stick model spinning. Serine (symbol Ser or S) [3] [4] is an α-amino acid that is used in the biosynthesis of proteins. It contains an α-amino group (which is in the protonated − NH +
Fibrinolysis (simplified). Blue arrows denote stimulation, and red arrows inhibition. Plasmin is a serine protease that acts to dissolve fibrin blood clots. Apart from fibrinolysis, plasmin proteolyses proteins in various other systems: It activates collagenases, some mediators of the complement system, and weakens the wall of the Graafian follicle, leading to ovulation.