Tripeptidyl peptidase II

Last updated
TPP2
Identifiers
Aliases TPP2 , TPP-2, TPPII, Tripeptidyl peptidase II, tripeptidyl peptidase 2, TPP-II, IMD78
External IDs OMIM: 190470; MGI: 102724; HomoloGene: 2471; GeneCards: TPP2; OMA:TPP2 - orthologs
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_003291
NM_001330588
NM_001367947

NM_009418
NM_001310540

RefSeq (protein)

NP_001317517
NP_003282
NP_001354876

NP_001297469
NP_033444

Location (UCSC) Chr 13: 102.6 – 102.68 Mb Chr 1: 43.97 – 44.04 Mb
PubMed search [3] [4]
Wikidata
View/Edit Human View/Edit Mouse

Tripeptidyl-peptidase 2 is an enzyme that in humans is encoded by the TPP2 gene. [5] [6] Among other things it is heavily implicated in MHC (HLA) class-I processing, as it has both endopeptidase and exopeptidase activity. [7]

Contents

Clinical significance and genetic deficiency

Biallelic deleterious variants in the TPP2 gene may result in a recessive disorder with immune deficiency, autoimmune disease and intellectual disability. [8] [9] Some genetic variants may result in a milder disease with sterile brain inflammation mimicking multiple sclerosis. [10] These observations underline the fundamental role of TPP2 in cells of the immune system.

References

  1. 1 2 3 GRCh38: Ensembl release 89: ENSG00000134900 Ensembl, May 2017
  2. 1 2 3 GRCm38: Ensembl release 89: ENSMUSG00000041763 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. Tomkinson B, Jonsson AK (January 1991). "Characterization of cDNA for human tripeptidyl peptidase II: the N-terminal part of the enzyme is similar to subtilisin". Biochemistry. 30 (1): 168–174. doi:10.1021/bi00215a025. PMID   1670990.
  6. "Entrez Gene: TPP2 tripeptidyl peptidase II".
  7. Reits E, Neijssen J, Herberts C, Benckhuijsen W, Janssen L, Drijfhout JW, Neefjes J (April 2004). "A major role for TPPII in trimming proteasomal degradation products for MHC class I antigen presentation". Immunity. 20 (4): 495–506. doi: 10.1016/S1074-7613(04)00074-3 . PMID   15084277.
  8. Lu W, Zhang Y, McDonald DO, Jing H, Carroll B, Robertson N, et al. (December 2014). "Dual proteolytic pathways govern glycolysis and immune competence". Cell. 159 (7): 1578–1590. doi:10.1016/j.cell.2014.12.001. PMC   4297473 . PMID   25525876.
  9. Atallah I, Quinodoz M, Campos-Xavier B, Peter VG, Fouriki A, Bonvin C, et al. (June 2021). "Immune deficiency, autoimmune disease and intellectual disability: A pleiotropic disorder caused by biallelic variants in the TPP2 gene". Clinical Genetics. 99 (6): 780–788. doi:10.1111/cge.13942. PMID   33586135. S2CID   231926886.
  10. Reinthaler EM, Graf E, Zrzavy T, Wieland T, Hotzy C, Kopecky C, et al. (December 2018). "TPP2 mutation associated with sterile brain inflammation mimicking MS". Neurology. Genetics. 4 (6): e285. doi:10.1212/NXG.0000000000000285. PMC   6244017 . PMID   30533531.

Further reading