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Overview

Uniprot IDP48047
Protein NameATP synthase peripheral stalk subunit OSCP, mitochondrial
Gene NameATP5PO
OrganismHomo sapiens

Kla Sites from experimental identification

Position Flanking peptide
158 EATLSELKTVLKSFL
162 SELKTVLKSFLSQGQ
172 LSQGQVLKLEAKTDP
176 QVLKLEAKTDPSILG
199 KYVDMSVKTKIQKLG
51 ALYSAASKQNKLEQV
54 SAASKQNKLEQVEKE
60 NKLEQVEKELLRVAQ
70 LRVAQILKEPKVAAS
73 AQILKEPKVAASVLN
84 SVLNPYVKRSIKVKS
90 VKRSIKVKSLNDITA
98 SLNDITAKERFSPLT

Function

Subunit OSCP, of the mitochondrial membrane ATP synthase complex (F(1)F(0) ATP synthase or Complex V) that produces ATP from ADP in the presence of a proton gradient across the membrane which is generated by electron transport complexes of the respiratory chain (PubMed:37244256). ATP synthase complex consist of a soluble F(1) head domain - the catalytic core - and a membrane F(1) domain - the membrane proton channel (PubMed:37244256). These two domains are linked by a central stalk rotating inside the F(1) region and a stationary peripheral stalk (PubMed:37244256). During catalysis, ATP synthesis in the catalytic domain of F(1) is coupled via a rotary mechanism of the central stalk subunits to proton translocation (Probable). In vivo, can only synthesize ATP although its ATP hydrolase activity can be activated artificially in vitro (By similarity). Part of the complex F(0) domain (PubMed:37244256). Part of the complex F(0) domain and the peripheric stalk, which acts as a stator to hold the catalytic alpha(3)beta(3) subcomplex and subunit a/ATP6 static relative to the rotary elements (By similarity)

Protein Sequence

10 MAAPAVSGLS 20 RQVRCFSTSV 30 VRPFAKLVRP 40 PVQVYGIEGR 50 YATALYSAAS 60 KQNKLEQVEK 70 ELLRVAQILK 80 EPKVAASVLN 90 PYVKRSIKVK 100 SLNDITAKER 110 FSPLTTNLIN 120 LLAENGRLSN 130 TQGVVSAFST 140 MMSVHRGEVP 150 CTVTSASPLE 160 EATLSELKTV 170 LKSFLSQGQV 180 LKLEAKTDPS 190 ILGGMIVRIG 200 EKYVDMSVKT 210 KIQKLGRAMR EIV

Gene Ontology

Classification GO ID Description
Cellular Component GO:0005739 mitochondrion
Cellular Component GO:0009986 cell surface
Cellular Component GO:0005743 mitochondrial inner membrane
Cellular Component GO:0005634 nucleus
Cellular Component GO:0005886 plasma membrane
Cellular Component GO:0045259 proton-transporting ATP synthase complex
Molecular Function GO:0016887 ATP hydrolysis activity
Molecular Function GO:1903924 estradiol binding
Molecular Function GO:0044877 protein-containing complex binding
Molecular Function GO:0046933 proton-transporting ATP synthase activity, rotational mechanism
Biological Process GO:0006754 ATP biosynthetic process
Biological Process GO:0071320 cellular response to cAMP
Biological Process GO:0071345 cellular response to cytokine stimulus
Biological Process GO:0015986 proton motive force-driven ATP synthesis
Biological Process GO:0042776 proton motive force-driven mitochondrial ATP synthesis
Biological Process GO:1902600 proton transmembrane transport

Reference

[1] Yang Z, Yan C, Ma J, Peng P, Ren X et al.. Lactylome analysis suggests lactylation-dependent mechanisms of metabolic adaptation in hepatocellular carcinoma.. Nat Metab 5(1):61-79. 2023 Jan. PMID: 36593272.

[2] Shi CM, Wang QC, Li XL, Yang YH, Tang XY et al.. Global Profiling of Protein Lactylation in Human Hippocampi.. Proteomics Clin Appl 19(2):e202400061. 2025 Mar. PMID: 39610256.

[3] He J, Lai T, Zhou Z, Yang H, Lei Z et al.. Multiomics profiling reveals the involvement of protein lactylation in nonhomologous end joining pathway conferring radioresistance in lung adenocarcinoma cell.. Sci Rep 15(1):24651. 2025 Jul 9. PMID: 40634431.

[4] Wu Q, Li Z, Gong T, Zheng X, Zhou X et al.. Porphyromonas gingivalis infection induces lysine lactylation reprogramming in human umbilical vein endothelial cells.. Front Cell Infect Microbiol 16:1706727. 2026. PMID: 41696360.