ID   PSB1_PETHY              Reviewed;         223 AA.
AC   O82531;
DT   18-OCT-2001, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1998, sequence version 1.
DT   03-AUG-2022, entry version 88.
DE   RecName: Full=Proteasome subunit beta type-1;
DE   AltName: Full=20S proteasome alpha subunit F;
DE   AltName: Full=20S proteasome subunit beta-6;
GN   Name=PBF1;
OS   Petunia hybrida (Petunia).
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC   asterids; lamiids; Solanales; Solanaceae; Petunioideae; Petunia.
OX   NCBI_TaxID=4102;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA].
RC   TISSUE=Petal;
RA   Lee H.S., Moon J.H., Kim S.G.;
RL   Submitted (SEP-1998) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Non-catalytic component of the proteasome, a multicatalytic
CC       proteinase complex which is characterized by its ability to cleave
CC       peptides with Arg, Phe, Tyr, Leu, and Glu adjacent to the leaving group
CC       at neutral or slightly basic pH. The proteasome has an ATP-dependent
CC       proteolytic activity.
CC   -!- SUBUNIT: The 26S proteasome consists of a 20S proteasome core and two
CC       19S regulatory subunits. The 20S proteasome core is composed of 28
CC       subunits that are arranged in four stacked rings, resulting in a
CC       barrel-shaped structure. The two end rings are each formed by seven
CC       alpha subunits, and the two central rings are each formed by seven beta
CC       subunits. The catalytic chamber with the active sites is on the inside
CC       of the barrel (By similarity). {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|PROSITE-ProRule:PRU00809}.
CC       Nucleus {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the peptidase T1B family. {ECO:0000255|PROSITE-
CC       ProRule:PRU00809}.
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DR   EMBL; AF088915; AAC35983.1; -; mRNA.
DR   AlphaFoldDB; O82531; -.
DR   SMR; O82531; -.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0005634; C:nucleus; IEA:UniProtKB-SubCell.
DR   GO; GO:0019774; C:proteasome core complex, beta-subunit complex; ISS:UniProtKB.
DR   GO; GO:0051603; P:proteolysis involved in protein catabolic process; IEA:InterPro.
DR   Gene3D; 3.60.20.10; -; 1.
DR   InterPro; IPR029055; Ntn_hydrolases_N.
DR   InterPro; IPR016050; Proteasome_bsu_CS.
DR   InterPro; IPR001353; Proteasome_sua/b.
DR   InterPro; IPR023333; Proteasome_suB-type.
DR   Pfam; PF00227; Proteasome; 1.
DR   SUPFAM; SSF56235; SSF56235; 1.
DR   PROSITE; PS00854; PROTEASOME_BETA_1; 1.
DR   PROSITE; PS51476; PROTEASOME_BETA_2; 1.
PE   2: Evidence at transcript level;
KW   Cytoplasm; Nucleus; Proteasome.
FT   CHAIN           1..223
FT                   /note="Proteasome subunit beta type-1"
FT                   /id="PRO_0000148040"
SQ   SEQUENCE   223 AA;  24618 MW;  E946CFDC7BA71E3A CRC64;
     MTKQQANWSP YDNNGGTCVA VAGADYCVIA ADTRMSTGYN ILTRDYSKII KLADKCVMAS
     SGFQADVRAL QKVLASRHLI YQHQHNKQMS CPAMGQLLSN TLYYKRFFPY YSFNVLGGLD
     SEGKGCVFTY DAVGSYERVG YSSQGSGSTL IMPFLDNQLK SPSPLLLPAQ DAVTPLSEAE
     AIDLVKTCFA SATERDIYTG DRLEIVILNA SGIRREEMEL RKD