PSB_XYLCX
ID PSB_XYLCX Reviewed; 270 AA.
AC D1BS26;
DT 10-AUG-2010, integrated into UniProtKB/Swiss-Prot.
DT 19-JAN-2010, sequence version 1.
DT 25-MAY-2022, entry version 58.
DE RecName: Full=Proteasome subunit beta {ECO:0000255|HAMAP-Rule:MF_02113};
DE EC=3.4.25.1 {ECO:0000255|HAMAP-Rule:MF_02113};
DE AltName: Full=20S proteasome beta subunit {ECO:0000255|HAMAP-Rule:MF_02113};
DE AltName: Full=Proteasome core protein PrcB {ECO:0000255|HAMAP-Rule:MF_02113};
DE Flags: Precursor;
GN Name=prcB {ECO:0000255|HAMAP-Rule:MF_02113}; OrderedLocusNames=Xcel_1488;
OS Xylanimonas cellulosilytica (strain DSM 15894 / CECT 5975 / LMG 20990 /
OS XIL07).
OC Bacteria; Actinobacteria; Micrococcales; Promicromonosporaceae;
OC Xylanimonas.
OX NCBI_TaxID=446471;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 15894 / CECT 5975 / LMG 20990 / XIL07;
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 Mikhailova N., Foster B., Clum A., Brettin T., Detter J.C., Han C.,
RA Larimer F., Land M., Hauser L., Markowitz V., Cheng J.F., Hugenholtz P.,
RA Woyke T., Wu D., Gehrich-Schroeter G., Schneider S., Pukall S.R.,
RA Klenk H.P., Eisen J.A.;
RT "The complete chromosome of Xylanimonas cellulosilytica DSM 15894.";
RL Submitted (NOV-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_02113}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=Cleavage of peptide bonds with very broad specificity.;
CC EC=3.4.25.1; Evidence={ECO:0000255|HAMAP-Rule:MF_02113};
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_02113}.
CC -!- PATHWAY: Protein degradation; proteasomal Pup-dependent pathway.
CC {ECO:0000255|HAMAP-Rule:MF_02113}.
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_02113}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_02113}.
CC -!- SIMILARITY: Belongs to the peptidase T1B family. {ECO:0000255|HAMAP-
CC Rule:MF_02113}.
CC ---------------------------------------------------------------------------
CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC ---------------------------------------------------------------------------
DR EMBL; CP001821; ACZ30518.1; -; Genomic_DNA.
DR RefSeq; WP_012878260.1; NC_013530.1.
DR AlphaFoldDB; D1BS26; -.
DR SMR; D1BS26; -.
DR STRING; 446471.Xcel_1488; -.
DR MEROPS; T01.005; -.
DR EnsemblBacteria; ACZ30518; ACZ30518; Xcel_1488.
DR KEGG; xce:Xcel_1488; -.
DR eggNOG; COG0638; Bacteria.
DR HOGENOM; CLU_035750_2_0_11; -.
DR OMA; NLGMAMQ; -.
DR OrthoDB; 1129370at2; -.
DR UniPathway; UPA00997; -.
DR Proteomes; UP000002255; Chromosome.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0019774; C:proteasome core complex, beta-subunit complex; IEA:UniProtKB-UniRule.
DR GO; GO:0004298; F:threonine-type endopeptidase activity; IEA:UniProtKB-UniRule.
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 Gene3D; 3.60.20.10; -; 1.
DR HAMAP; MF_02113_B; Proteasome_B_B; 1.
DR InterPro; IPR029055; Ntn_hydrolases_N.
DR InterPro; IPR000243; Pept_T1A_subB.
DR InterPro; IPR001353; Proteasome_sua/b.
DR InterPro; IPR023333; Proteasome_suB-type.
DR InterPro; IPR022483; PSB_actinobac.
DR Pfam; PF00227; Proteasome; 1.
DR PRINTS; PR00141; PROTEASOME.
DR SUPFAM; SSF56235; SSF56235; 1.
DR TIGRFAMs; TIGR03690; 20S_bact_beta; 1.
DR PROSITE; PS51476; PROTEASOME_BETA_2; 1.
PE 3: Inferred from homology;
KW Autocatalytic cleavage; Cytoplasm; Hydrolase; Protease; Proteasome;
KW Reference proteome; Threonine protease; Zymogen.
FT PROPEP 1..47
FT /note="Removed in mature form; by autocatalysis"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02113"
FT /id="PRO_0000397600"
FT CHAIN 48..270
FT /note="Proteasome subunit beta"
FT /id="PRO_0000397601"
FT ACT_SITE 48
FT /note="Nucleophile"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02113"
SQ SEQUENCE 270 AA; 28601 MW; A596C6E13D842BC2 CRC64;
MSNRGRLGDA FLRPGSSSFL DFLSDHAPEL LPGRSAAAGN APLAPHATTI VALTFQDGVV
MAGDRRATAG TMIASREIEK VFPADDYSVI GISGSAGIGV DLARLFQLEL EHYEKIEGSL
LSLDGKANRL GTLLRGNLPL AMQGFVVVPL FGGYDLDRGA GRIFSYDATG GRYEEHEHHG
TGSGAIFARG ALKKLWRPGM DAAEAVKVAV EALYDAADDD AATGGPDPVR RIWPVVTTVT
AAGYRRVPED ELATLVDALL AVRTERGRLA
