Leucyl/cystinyl aminopeptidase

Last updated
LNPEP
Available structures
PDB Ortholog search: PDBe RCSB
Identifiers
Aliases LNPEP , CAP, IRAP, P-LAP, PLAP, leucyl/cystinyl aminopeptidase, leucyl and cystinyl aminopeptidase
External IDs OMIM: 151300 MGI: 2387123 HomoloGene: 21148 GeneCards: LNPEP
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_175920
NM_005575

NM_172827

RefSeq (protein)

NP_005566
NP_787116

NP_766415

Location (UCSC) Chr 5: 96.94 – 97.04 Mb Chr 17: 17.74 – 17.85 Mb
PubMed search [3] [4]
Wikidata
View/Edit Human View/Edit Mouse

Leucyl/cystinyl aminopeptidase, also known as cystinyl aminopeptidase (CAP), insulin-regulated aminopeptidase (IRAP), human placental leucine aminopeptidase (PLAP), oxytocinase, and vasopressinase, is an enzyme of the aminopeptidase group that in humans is encoded by the LNPEP gene. [5] [6]

Contents

This gene encodes a zinc-dependent aminopeptidase (metalloexopeptidase) that cleaves vasopressin, oxytocin, lys-bradykinin, met-enkephalin, dynorphin A and other peptide hormones. The protein can be secreted in maternal serum, reside in intracellular vesicles with the insulin-responsive glucose transporter GLUT4, or form a type II integral membrane glycoprotein. The protein catalyzes the final step in the conversion of angiotensinogen to angiotensin IV (AT4) and is also a receptor for AT4. Alternative splicing results in multiple transcript variants encoding different isoforms. [6]

Mutations in this gene have been associated to psoriasis risk.(doi:10.1038/jid.2013.317)

Interactions

Cystinyl aminopeptidase has been shown to interact with TNKS2. [7] [8] [9]

Related Research Articles

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<span class="mw-page-title-main">Ubenimex</span> Chemical compound

Ubenimex (INN), also known more commonly as bestatin, is a competitive, reversible protease inhibitor. It is an inhibitor of arginyl aminopeptidase (aminopeptidase B), leukotriene A4 hydrolase (a zinc metalloprotease that displays both epoxide hydrolase and aminopeptidase activities), alanyl aminopeptidase (aminopeptidase M/N), leucyl/cystinyl aminopeptidase (oxytocinase/vasopressinase), and membrane dipeptidase (leukotriene D4 hydrolase). It is being studied for use in the treatment of acute myelocytic leukemia and lymphedema. It is derived from Streptomyces olivoreticuli. Ubenimex has been found to inhibit the enzymatic degradation of oxytocin, vasopressin, enkephalins, and various other peptides and compounds.

Oxytocinase is a type of enzyme that metabolizes the endogenous neuropeptide, oxytocin. The most well-characterized oxytocinase is leucyl/cystinyl aminopeptidase, which is also an enkephalinase. Other oxytocinases are also known. During pregnancy, oxytocinase plays a role in balancing concentration of oxytocin by degrading the oxytocin produced by the fetus, as production of oxytocin increases with growth of fetus. One study found that concentration level of oxytocinase increased progressively with gestational age until labor, which indicates that pregnancy development can be statistically evaluated by comparing oxytocinase levels.

<span class="mw-page-title-main">Amastatin</span> Chemical compound

Amastatin, also known as 3-amino-2-hydroxy-5-methylhexanoyl-L-valyl-L-valyl-L-aspartic acid, is a naturally occurring, competitive and reversible aminopeptidase inhibitor that was isolated from Streptomyces sp. ME 98-M3. It specifically inhibits leucyl aminopeptidase, alanyl aminopeptidase, bacterial leucyl aminopeptidase, leucyl/cystinyl aminopeptidase (oxytocinase/vasopressinase), and, to a lesser extent, glutamyl aminopeptidase, as well as other aminopeptidases. It does not inhibit arginyl aminopeptidase. Amastatin has been found to potentiate the central nervous system effects of oxytocin and vasopressin in vivo. It also inhibits the degradation of met-enkephalin, dynorphin A, and other endogenous peptides.

References

  1. 1 2 3 GRCh38: Ensembl release 89: ENSG00000113441 - Ensembl, May 2017
  2. 1 2 3 GRCm38: Ensembl release 89: ENSMUSG00000023845 - Ensembl, May 2017
  3. "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. Rogi T, Tsujimoto M, Nakazato H, Mizutani S, Tomoda Y (February 1996). "Human placental leucine aminopeptidase/oxytocinase. A new member of type II membrane-spanning zinc metallopeptidase family". J Biol Chem. 271 (1): 56–61. doi: 10.1074/jbc.271.1.56 . PMID   8550619.
  6. 1 2 "Entrez Gene: LNPEP leucyl/cystinyl aminopeptidase".
  7. Sbodio, Juan I; Chi Nai-Wen (August 2002). "Identification of a tankyrase-binding motif shared by IRAP, TAB182, and human TRF1 but not mouse TRF1. NuMA contains this RXXPDG motif and is a novel tankyrase partner". J. Biol. Chem. 277 (35): 31887–92. doi: 10.1074/jbc.M203916200 . ISSN   0021-9258. PMID   12080061.
  8. Chi, N W; Lodish H F (December 2000). "Tankyrase is a golgi-associated mitogen-activated protein kinase substrate that interacts with IRAP in GLUT4 vesicles". J. Biol. Chem. 275 (49): 38437–44. doi: 10.1074/jbc.M007635200 . ISSN   0021-9258. PMID   10988299.
  9. Sbodio, Juan I; Lodish Harvey F; Chi Nai-Wen (February 2002). "Tankyrase-2 oligomerizes with tankyrase-1 and binds to both TRF1 (telomere-repeat-binding factor 1) and IRAP (insulin-responsive aminopeptidase)". Biochem. J. 361 (Pt 3): 451–9. doi:10.1042/0264-6021:3610451. ISSN   0264-6021. PMC   1222327 . PMID   11802774.

Further reading