ID   CLPP3_SYNY3             Reviewed;         202 AA.
AC   P74467;
DT   15-JUL-1998, integrated into UniProtKB/Swiss-Prot.
DT   01-FEB-1997, sequence version 1.
DT   03-AUG-2022, entry version 133.
DE   RecName: Full=Probable ATP-dependent Clp protease proteolytic subunit 3;
DE            EC=3.4.21.92 {ECO:0000255|HAMAP-Rule:MF_00444};
DE   AltName: Full=Endopeptidase Clp 3 {ECO:0000255|HAMAP-Rule:MF_00444};
GN   Name=clpP3 {ECO:0000255|HAMAP-Rule:MF_00444}; OrderedLocusNames=slr0165;
OS   Synechocystis sp. (strain PCC 6803 / Kazusa).
OC   Bacteria; Cyanobacteria; Synechococcales; Merismopediaceae; Synechocystis;
OC   unclassified Synechocystis.
OX   NCBI_TaxID=1111708;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=PCC 6803 / Kazusa;
RX   PubMed=8905231; DOI=10.1093/dnares/3.3.109;
RA   Kaneko T., Sato S., Kotani H., Tanaka A., Asamizu E., Nakamura Y.,
RA   Miyajima N., Hirosawa M., Sugiura M., Sasamoto S., Kimura T., Hosouchi T.,
RA   Matsuno A., Muraki A., Nakazaki N., Naruo K., Okumura S., Shimpo S.,
RA   Takeuchi C., Wada T., Watanabe A., Yamada M., Yasuda M., Tabata S.;
RT   "Sequence analysis of the genome of the unicellular cyanobacterium
RT   Synechocystis sp. strain PCC6803. II. Sequence determination of the entire
RT   genome and assignment of potential protein-coding regions.";
RL   DNA Res. 3:109-136(1996).
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; BA000022; BAA18568.1; -; Genomic_DNA.
DR   PIR; S76439; S76439.
DR   AlphaFoldDB; P74467; -.
DR   SMR; P74467; -.
DR   IntAct; P74467; 3.
DR   STRING; 1148.1653656; -.
DR   MEROPS; S14.001; -.
DR   PaxDb; P74467; -.
DR   PRIDE; P74467; -.
DR   EnsemblBacteria; BAA18568; BAA18568; BAA18568.
DR   KEGG; syn:slr0165; -.
DR   eggNOG; COG0740; Bacteria.
DR   InParanoid; P74467; -.
DR   OMA; GFKRQDP; -.
DR   PhylomeDB; P74467; -.
DR   BRENDA; 3.4.21.92; 382.
DR   Proteomes; UP000001425; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0009368; C:endopeptidase Clp complex; IBA:GO_Central.
DR   GO; GO:0004176; F:ATP-dependent peptidase activity; IBA:GO_Central.
DR   GO; GO:0051117; F:ATPase binding; IBA:GO_Central.
DR   GO; GO:0004252; F:serine-type endopeptidase activity; IBA:GO_Central.
DR   GO; GO:0006515; P:protein quality control for misfolded or incompletely synthesized proteins; IBA:GO_Central.
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   InterPro; IPR018215; ClpP_Ser_AS.
DR   PANTHER; PTHR10381; PTHR10381; 1.
DR   Pfam; PF00574; CLP_protease; 1.
DR   PRINTS; PR00127; CLPPROTEASEP.
DR   SUPFAM; SSF52096; SSF52096; 1.
DR   PROSITE; PS00382; CLP_PROTEASE_HIS; 1.
DR   PROSITE; PS00381; CLP_PROTEASE_SER; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Hydrolase; Protease; Reference proteome; Serine protease.
FT   CHAIN           1..202
FT                   /note="Probable ATP-dependent Clp protease proteolytic
FT                   subunit 3"
FT                   /id="PRO_0000179696"
FT   ACT_SITE        101
FT                   /note="Nucleophile"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00444"
FT   ACT_SITE        126
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00444"
SQ   SEQUENCE   202 AA;  22397 MW;  AAC31B70F5ACBAC8 CRC64;
     MPIGVPSVPF RLPGSQYERW IDIYTRLSQE RIIFLGQEVN DSIANRIVAF LLYLDSDDPS
     KPIYLYINSP GGSVTAGMAI YDTMQYIKAE VITICVGLAA SMGAFLLASG APGKRLALPH
     ARIMIHQPMG GTGRRQATDI DIEAREILRI RQQLNEIMAQ RTGQTVEKIA KDTDRDYFLS
     AAEAKEYGLI DKVIENSTMG NN