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- Table of Contents
Facts about Plasma serine protease inhibitor.
Involved in the regulation of intravascular and extravascular proteolytic activities. Plays hemostatic functions in the blood plasma.
Human | |
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Gene Name: | SERPINA5 |
Uniprot: | P05154 |
Entrez: | 5104 |
Belongs to: |
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serpin family |
Acrosomal serine protease inhibitor; antitrypsin), member 5; member 5; PAI-3; PAI3PLANH3; PCI; PCIplasminogen activator inhibitor III; Plasminogen activator inhibitor 3; plasminogen activator inhibitor-3; PROCIplasma serine protease inhibitor; Protein C inhibitor; serine (or cysteine) proteinase inhibitor, clade A (alpha-1 antiproteinase; Serpin A5; serpin peptidase inhibitor, clade A (alpha-1 antiproteinase, antitrypsin); SERPNA5
Mass (kDA):
45.675 kDA
Human | |
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Location: | 14q32.13 |
Sequence: | 14; NC_000014.9 (94581426..94593118) |
Predominantly expressed in the epithelium of seminal vesicles. Expressed in the proximal tubular epithelium of the kidney. Expressed in the superficial and more differentiated epidermal keratinocytes of the skin. Expressed in megakaryocytes and platelets. Expressed poorly in kidney tumor cells compared to non tumor kidney tissues. Expressed in spermatozoa. Present in very high concentration in seminal plasma. Present in high concentration in plasma, synovial and Graaf follicle fluids. Present in low concentration in breast milk and in amniotic fluids. Present in very low concentration in urine, cerebrospinal fluids, saliva and tears (at protein level). Strongly expressed in liver. Expressed in kidney, spleen, pancreas, skeletal muscle, heart, testes, ovary, interstitial Leydig cells, epididymal glands, seminal vesicles and prostate.
Secreted, extracellular space. Localized on the plasma membrane overlying the acrosomal head of spermatozoa of ependymal spermatozoa and ejaculated sperm. Localized at the equatorial segment of acrosome-reacted spematozoa. Localized in alpha granules in resting platelets and on the external plasma membrane and within the surface-connected cannalicular system in activated platelets.
PMID: 3027058 by Suzuki K., et al. Characterization of a cDNA for human protein C inhibitor. A new member of the plasma serine protease inhibitor superfamily.
PMID: 2173165 by Meijers J.C.M., et al. Evidence for a glycine residue at position 316 in human protein C inhibitor.