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Overview

Uniprot IDA0A287A3W3
Protein NamePyrroline-5-carboxylate reductase
Gene NamePYCR3
OrganismSus scrofa

Kla Sites from experimental identification

Position Flanking peptide
33 QGLIRAGKVEAQYVL

Function

Oxidoreductase that catalyzes the last step in proline biosynthesis, which corresponds to the reduction of pyrroline-5-carboxylate (P5C) to L-proline using NAD(P)H. Proline is synthesized from either glutamate or ornithine; both are converted to P5C, and then to proline via pyrroline-5-carboxylate reductases (PYCRs). PYCR3 is exclusively linked to the biosynthesis of proline from ornithine

Protein Sequence

10 MAAAAETGPR 20 RVGFVGAGRM 30 AEAIAQGLIR 40 AGKVEAQYVL 50 ASAPTDRNLC 60 HFRALGCRTT 70 HSNHEVLQSC 80 SLVIFATKPH 90 VLPAVLAEVA 100 PVVTTEHILV 110 SVAAGVPLST 120 MEELLPPGAR 130 VLRVSPNLPC 140 VVQEGAMVLA 150 RGRHAGNSEA 160 ELLQTLLEAC 170 GQCEEVPEAQ 180 VDTHTGLSGS 190 GVAFVCAFSE 200 ALAEGAIKMG 210 MPSGLAYRIA 220 AQTLLGTAKM 230 LLQKGQHPAQ 240 LRTDVCTPGG 250 TTIYGLHALE 260 QGGLRAAAMS 270 AVEAATRRAK EMRKWRG

Gene Ontology

Classification GO ID Description
Cellular Component GO:0005829 cytosol
Molecular Function GO:0042802 identical protein binding
Molecular Function GO:0004735 pyrroline-5-carboxylate reductase activity
Biological Process GO:0055129 L-proline biosynthetic process

Reference

[1] Fan S, Zhou R, Wen H, Ye H, Ma S et al.. Global profiling of protein lactylome in porcine granulosa cells.. J Ovarian Res 18(1):177. 2025 Aug 8. PMID: 40781717.