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Overview

Uniprot IDA0A286Y2Q2
Protein NameProteasome subunit alpha type
Gene NamePSMA1
OrganismCavia porcellus

Kla Sites from experimental identification

Position Flanking peptide
243 LEERPQRKAQPAQPA

Function

Component of the 20S core proteasome complex involved in the proteolytic degradation of most intracellular proteins. This complex plays numerous essential roles within the cell by associating with different regulatory particles. Associated with two 19S regulatory particles, forms the 26S proteasome and thus participates in the ATP-dependent degradation of ubiquitinated proteins. The 26S proteasome plays a key role in the maintenance of protein homeostasis by removing misfolded or damaged proteins that could impair cellular functions, and by removing proteins whose functions are no longer required. Associated with the PA200 or PA28, the 20S proteasome mediates ubiquitin-independent protein degradation. This type of proteolysis is required in several pathways including spermatogenesis (20S-PA200 complex) or generation of a subset of MHC class I-presented antigenic peptides (20S-PA28 complex)

Protein Sequence

10 MFRNQYDNDV 20 TVWSPQGRIH 30 QIEYAMEAVK 40 QGSATVGLKS 50 KTHAVLVALK 60 RAQSELAAHQ 70 KKILHVDNHI 80 GISIAGLTAD 90 ARLLCNFMRQ 100 ECLDSRFVFD 110 RPLPVSRLVS 120 LIGSKTQIPT 130 QRYGRRPYGV 140 GLLIAGYDDM 150 GPHIFQTCPS 160 ANYFDCRAMS 170 IGARSQSART 180 YLERHMSEFM 190 ECNLNELVKH 200 GLRALRETLP 210 AEQDLTTKNV 220 SIGIVGKDLE 230 FTIYDDDDVS 240 PFLEGLEERP 250 QRKAQPAQPA 260 DEPAEKADEP MEH

Gene Ontology

Classification GO ID Description
Cellular Component GO:0005829 cytosol
Cellular Component GO:0005634 nucleus
Cellular Component GO:0019773 proteasome core complex, alpha-subunit complex
Biological Process GO:0006511 ubiquitin-dependent protein catabolic process

Reference

[1] Feng J, Chen X, Li R, Xie Y, Zhang X et al.. Lactylome analysis reveals potential target modified proteins in the retina of form-deprivation myopia.. iScience 27(9):110606. 2024 Sep 20. PMID: 39246443.