ID   CLPP_PSYA2              Reviewed;         225 AA.
AC   Q4FQB9;
DT   07-MAR-2006, integrated into UniProtKB/Swiss-Prot.
DT   30-AUG-2005, sequence version 1.
DT   03-AUG-2022, entry version 115.
DE   RecName: Full=ATP-dependent Clp protease proteolytic subunit {ECO:0000255|HAMAP-Rule:MF_00444};
DE            EC=3.4.21.92 {ECO:0000255|HAMAP-Rule:MF_00444};
DE   AltName: Full=Endopeptidase Clp {ECO:0000255|HAMAP-Rule:MF_00444};
GN   Name=clpP {ECO:0000255|HAMAP-Rule:MF_00444}; OrderedLocusNames=Psyc_1941;
OS   Psychrobacter arcticus (strain DSM 17307 / VKM B-2377 / 273-4).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Moraxellales; Moraxellaceae;
OC   Psychrobacter.
OX   NCBI_TaxID=259536;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=DSM 17307 / VKM B-2377 / 273-4;
RX   PubMed=20154119; DOI=10.1128/aem.02101-09;
RA   Ayala-del-Rio H.L., Chain P.S., Grzymski J.J., Ponder M.A., Ivanova N.,
RA   Bergholz P.W., Di Bartolo G., Hauser L., Land M., Bakermans C.,
RA   Rodrigues D., Klappenbach J., Zarka D., Larimer F., Richardson P.,
RA   Murray A., Thomashow M., Tiedje J.M.;
RT   "The genome sequence of Psychrobacter arcticus 273-4, a psychroactive
RT   Siberian permafrost bacterium, reveals mechanisms for adaptation to low-
RT   temperature growth.";
RL   Appl. Environ. Microbiol. 76:2304-2312(2010).
CC   -!- FUNCTION: Cleaves peptides in various proteins in a process that
CC       requires ATP hydrolysis. Has a chymotrypsin-like activity. Plays a
CC       major role in the degradation of misfolded proteins.
CC       {ECO:0000255|HAMAP-Rule:MF_00444}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=Hydrolysis of proteins to small peptides in the presence of
CC         ATP and magnesium. alpha-casein is the usual test substrate. In the
CC         absence of ATP, only oligopeptides shorter than five residues are
CC         hydrolyzed (such as succinyl-Leu-Tyr-|-NHMec, and Leu-Tyr-Leu-|-Tyr-
CC         Trp, in which cleavage of the -Tyr-|-Leu- and -Tyr-|-Trp bonds also
CC         occurs).; EC=3.4.21.92; Evidence={ECO:0000255|HAMAP-Rule:MF_00444};
CC   -!- SUBUNIT: Fourteen ClpP subunits assemble into 2 heptameric rings which
CC       stack back to back to give a disk-like structure with a central cavity,
CC       resembling the structure of eukaryotic proteasomes. {ECO:0000255|HAMAP-
CC       Rule:MF_00444}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00444}.
CC   -!- SIMILARITY: Belongs to the peptidase S14 family. {ECO:0000255|HAMAP-
CC       Rule:MF_00444}.
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DR   EMBL; CP000082; AAZ19789.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q4FQB9; -.
DR   SMR; Q4FQB9; -.
DR   STRING; 259536.Psyc_1941; -.
DR   MEROPS; S14.001; -.
DR   EnsemblBacteria; AAZ19789; AAZ19789; Psyc_1941.
DR   KEGG; par:Psyc_1941; -.
DR   eggNOG; COG0740; Bacteria.
DR   HOGENOM; CLU_058707_3_3_6; -.
DR   OMA; RDYWMKA; -.
DR   Proteomes; UP000000546; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0004176; F:ATP-dependent peptidase activity; IEA:InterPro.
DR   GO; GO:0004252; F:serine-type endopeptidase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0006508; P:proteolysis; IEA:UniProtKB-UniRule.
DR   CDD; cd07017; S14_ClpP_2; 1.
DR   HAMAP; MF_00444; ClpP; 1.
DR   InterPro; IPR001907; ClpP.
DR   InterPro; IPR029045; ClpP/crotonase-like_dom_sf.
DR   InterPro; IPR023562; ClpP/TepA.
DR   InterPro; IPR033135; ClpP_His_AS.
DR   PANTHER; PTHR10381; PTHR10381; 1.
DR   Pfam; PF00574; CLP_protease; 1.
DR   PRINTS; PR00127; CLPPROTEASEP.
DR   SUPFAM; SSF52096; SSF52096; 1.
DR   TIGRFAMs; TIGR00493; clpP; 1.
DR   PROSITE; PS00382; CLP_PROTEASE_HIS; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Hydrolase; Protease; Reference proteome; Serine protease.
FT   CHAIN           1..225
FT                   /note="ATP-dependent Clp protease proteolytic subunit"
FT                   /id="PRO_0000226463"
FT   ACT_SITE        126
FT                   /note="Nucleophile"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00444"
FT   ACT_SITE        151
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00444"
SQ   SEQUENCE   225 AA;  25056 MW;  EFB0E14A3617304C CRC64;
     MTDYDRITAN PHFDMLMSAH NHVQSTTQSA LVPMVVEQSA RGERSFDIFS RLLRERVIFL
     TGQVEDHMAN LIVAQLLFLE AENPDKDIHL YINSPGGSVS AGLAIFDTMN FIKPEVSTIC
     MGGAYSMGSF LLAAGQKGKR YALANARVMI HQPSGGAQGQ ATDIEINARE ILKTRARLNE
     ILAERTGQSV EKIEKDVERD YWLDAKEAKE YGLIDEVLER RPASL