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Overview

Uniprot IDP97584
Protein NameProstaglandin reductase 1
Gene NamePtgr1
OrganismRattus norvegicus

Kla Sites from experimental identification

Position Flanking peptide
168 IAKLKGCKVVGTAGS
178 GTAGSDEKVAYLKKL
197 AFNYKTVKSLEEALR
5 ***MVQAKTWTLKKH

Function

NAD(P)H-dependent oxidoreductase involved in metabolic inactivation of pro- and anti-inflammatory eicosanoids: prostaglandins (PG), leukotrienes (LT) and lipoxins (LX) (By similarity). Catalyzes with high efficiency the reduction of the 13,14 double bond of 15-oxoPGs, including 15-oxo-PGE1, 15-oxo-PGE2, 15-oxo-PGF1-alpha and 15-oxo-PGF2-alpha (By similarity) (PubMed:11524419). Catalyzes with lower efficiency the oxidation of the hydroxyl group at C12 of LTB4 and its derivatives, converting them into biologically less active 12-oxo-LTB4 metabolites (By similarity). Reduces 15-oxo-LXA4 to 13,14 dihydro-15-oxo-LXA4, enhancing neutrophil recruitment at the inflammatory site (By similarity). Plays a role in metabolic detoxification of alkenals and ketones. Reduces alpha,beta-unsaturated alkenals and ketones, particularly those with medium-chain length, showing highest affinity toward (2E)-decenal and (3E)-3-nonen-2-one (PubMed:11524419). Inactivates 4-hydroxy-2-nonenal, a cytotoxic lipid constituent of oxidized low-density lipoprotein particles (PubMed:11524419)

Protein Sequence

10 MVQAKTWTLK 20 KHFEGFPTDS 30 NFELRTTELP 40 PLNNGEVLLE 50 ALFLSVDPYM 60 RVAAKKLKEG 70 DSMMGEQVAR 80 VVESKNSAFP 90 TGTIVVALLG 100 WTSHSISDGN 110 GLRKLPAEWP 120 DKLPLSLALG 130 TVGMPGLTAY 140 FGLLDICGLK 150 GGETVLVNAA 160 AGAVGSVVGQ 170 IAKLKGCKVV 180 GTAGSDEKVA 190 YLKKLGFDVA 200 FNYKTVKSLE 210 EALRTASPDG 220 YDCYFDNVGG 230 EFSNTVILQM 240 KTFGRIAICG 250 AISQYNRTGP 260 CPPGPSPEVI 270 IYQQLRMEGF 280 IVTRWQGEVR 290 QKALTDLMNW 300 VSEGKIRYHE 310 YITEGFEKMP 320 AAFMGMLKGD NLGKTIVKA

Gene Ontology

Classification GO ID Description
Molecular Function GO:0035798 2-alkenal reductase (NADPH) activity
Cellular Component GO:0005737 cytoplasm
Cellular Component GO:0005829 cytosol
Cellular Component GO:0005634 nucleus
Molecular Function GO:0036185 13-lipoxin reductase activity
Molecular Function GO:0047522 15-oxoprostaglandin 13-reductase [NAD(P)+] activity
Molecular Function GO:0097257 leukotriene B4 12-hydroxy dehydrogenase activity
Biological Process GO:0036102 leukotriene B4 metabolic process
Biological Process GO:2001302 lipoxin A4 metabolic process
Biological Process GO:0050928 negative regulation of positive chemotaxis
Biological Process GO:1903427 negative regulation of reactive oxygen species biosynthetic process
Biological Process GO:0006693 prostaglandin metabolic process
Biological Process GO:0097327 response to antineoplastic agent

Reference

[1] Sheng L, Xu H, Wang Y, Ni J, Xiang T et al.. Systematic analysis of lysine lactylation in nucleus pulposus cells.. iScience 27(11):111157. 2024 Nov 15. PMID: 39524337.