ID   PSA_GORB4               Reviewed;         262 AA.
AC   D0LDT2;
DT   10-AUG-2010, integrated into UniProtKB/Swiss-Prot.
DT   15-DEC-2009, sequence version 1.
DT   27-MAR-2024, entry version 69.
DE   RecName: Full=Proteasome subunit alpha {ECO:0000255|HAMAP-Rule:MF_00289};
DE   AltName: Full=20S proteasome alpha subunit {ECO:0000255|HAMAP-Rule:MF_00289};
DE   AltName: Full=Proteasome core protein PrcA {ECO:0000255|HAMAP-Rule:MF_00289};
GN   Name=prcA {ECO:0000255|HAMAP-Rule:MF_00289};
GN   OrderedLocusNames=Gbro_2464;
OS   Gordonia bronchialis (strain ATCC 25592 / DSM 43247 / BCRC 13721 / JCM 3198
OS   / KCTC 3076 / NBRC 16047 / NCTC 10667) (Rhodococcus bronchialis).
OC   Bacteria; Actinomycetota; Actinomycetes; Mycobacteriales; Gordoniaceae;
OC   Gordonia.
OX   NCBI_TaxID=526226;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 25592 / DSM 43247 / BCRC 13721 / JCM 3198 / KCTC 3076 /
RC   NBRC 16047 / NCTC 10667;
RG   US DOE Joint Genome Institute (JGI-PGF);
RA   Lucas S., Copeland A., Lapidus A., Glavina del Rio T., Dalin E., Tice H.,
RA   Bruce D., Goodwin L., Pitluck S., Kyrpides N., Mavromatis K., Ivanova N.,
RA   Ovchinnikova G., Saunders E., Brettin T., Detter J.C., Han C., Larimer F.,
RA   Land M., Hauser L., Markowitz V., Cheng J.-F., Hugenholtz P., Woyke T.,
RA   Wu D., Jando M., Schneider S., Goeker M., Klenk H.-P., Eisen J.A.;
RT   "The complete chromosome of Gordonia bronchialis DSM 43247.";
RL   Submitted (OCT-2009) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Component of the proteasome core, a large protease complex
CC       with broad specificity involved in protein degradation.
CC       {ECO:0000255|HAMAP-Rule:MF_00289}.
CC   -!- ACTIVITY REGULATION: The formation of the proteasomal ATPase ARC-20S
CC       proteasome complex, likely via the docking of the C-termini of ARC into
CC       the intersubunit pockets in the alpha-rings, may trigger opening of the
CC       gate for substrate entry. Interconversion between the open-gate and
CC       close-gate conformations leads to a dynamic regulation of the 20S
CC       proteasome proteolysis activity. {ECO:0000255|HAMAP-Rule:MF_00289}.
CC   -!- PATHWAY: Protein degradation; proteasomal Pup-dependent pathway.
CC       {ECO:0000255|HAMAP-Rule:MF_00289}.
CC   -!- SUBUNIT: The 20S proteasome core is composed of 14 alpha and 14 beta
CC       subunits that assemble into four stacked heptameric rings, resulting in
CC       a barrel-shaped structure. The two inner rings, each composed of seven
CC       catalytic beta subunits, are sandwiched by two outer rings, each
CC       composed of seven alpha subunits. The catalytic chamber with the active
CC       sites is on the inside of the barrel. Has a gated structure, the ends
CC       of the cylinder being occluded by the N-termini of the alpha-subunits.
CC       Is capped by the proteasome-associated ATPase, ARC. {ECO:0000255|HAMAP-
CC       Rule:MF_00289}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00289}.
CC   -!- SIMILARITY: Belongs to the peptidase T1A family. {ECO:0000255|HAMAP-
CC       Rule:MF_00289}.
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DR   EMBL; CP001802; ACY21705.1; -; Genomic_DNA.
DR   RefSeq; WP_012834260.1; NC_013441.1.
DR   AlphaFoldDB; D0LDT2; -.
DR   SMR; D0LDT2; -.
DR   STRING; 526226.Gbro_2464; -.
DR   KEGG; gbr:Gbro_2464; -.
DR   eggNOG; COG0638; Bacteria.
DR   HOGENOM; CLU_071031_0_0_11; -.
DR   OrthoDB; 9775643at2; -.
DR   UniPathway; UPA00997; -.
DR   Proteomes; UP000001219; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0019773; C:proteasome core complex, alpha-subunit complex; IEA:UniProtKB-UniRule.
DR   GO; GO:0004298; F:threonine-type endopeptidase activity; IEA:InterPro.
DR   GO; GO:0019941; P:modification-dependent protein catabolic process; IEA:UniProtKB-UniRule.
DR   GO; GO:0010498; P:proteasomal protein catabolic process; IEA:UniProtKB-UniRule.
DR   CDD; cd01901; Ntn_hydrolase; 1.
DR   Gene3D; 3.60.20.10; Glutamine Phosphoribosylpyrophosphate, subunit 1, domain 1; 1.
DR   HAMAP; MF_00289_B; Proteasome_A_B; 1.
DR   InterPro; IPR029055; Ntn_hydrolases_N.
DR   InterPro; IPR023332; Proteasome_alpha-type.
DR   InterPro; IPR022296; Proteasome_asu_bac.
DR   InterPro; IPR001353; Proteasome_sua/b.
DR   NCBIfam; TIGR03691; 20S_bact_alpha; 1.
DR   Pfam; PF00227; Proteasome; 1.
DR   SUPFAM; SSF56235; N-terminal nucleophile aminohydrolases (Ntn hydrolases); 1.
DR   PROSITE; PS51475; PROTEASOME_ALPHA_2; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Proteasome; Reference proteome.
FT   CHAIN           1..262
FT                   /note="Proteasome subunit alpha"
FT                   /id="PRO_0000397141"
FT   REGION          235..262
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ   SEQUENCE   262 AA;  27833 MW;  847A105A4E0A7E9D CRC64;
     MTFPYYASAE QIMRDRSELA RKGIARGRSV VILTYADGVL FVAENPSNTL RKTSEIYDRI
     GFAAVGKYNE FESLRKAGIQ LADMRGYSYD RADVSGLSLA NTYANALGGV FTEQPKPFEV
     ELCVAEVARY GKPKPSQLYR ISYDGSITDE TRFLVMGGAT EPIAAALKES YQPDLELGAA
     VAVAVGALAT PADSGNGTAA SPRVLTAGDL EVAILDRNRP RRAFRRLSAA ALEELLPTTG
     ESDAGDSGAD GSPSGDSPDT SA
//