ID   CLPP3_SYNP6             Reviewed;         240 AA.
AC   Q5N1P6;
DT   07-JUN-2005, integrated into UniProtKB/Swiss-Prot.
DT   01-FEB-2005, sequence version 1.
DT   03-AUG-2022, entry version 101.
DE   RecName: Full=ATP-dependent Clp protease proteolytic subunit 3 {ECO:0000255|HAMAP-Rule:MF_00444};
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=syc1584_c;
OS   Synechococcus sp. (strain ATCC 27144 / PCC 6301 / SAUG 1402/1) (Anacystis
OS   nidulans).
OC   Bacteria; Cyanobacteria; Synechococcales; Synechococcaceae; Synechococcus.
OX   NCBI_TaxID=269084;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 27144 / PCC 6301 / SAUG 1402/1;
RX   PubMed=17211581; DOI=10.1007/s11120-006-9122-4;
RA   Sugita C., Ogata K., Shikata M., Jikuya H., Takano J., Furumichi M.,
RA   Kanehisa M., Omata T., Sugiura M., Sugita M.;
RT   "Complete nucleotide sequence of the freshwater unicellular cyanobacterium
RT   Synechococcus elongatus PCC 6301 chromosome: gene content and
RT   organization.";
RL   Photosyn. Res. 93:55-67(2007).
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; AP008231; BAD79774.1; -; Genomic_DNA.
DR   RefSeq; WP_011243894.1; NC_006576.1.
DR   AlphaFoldDB; Q5N1P6; -.
DR   SMR; Q5N1P6; -.
DR   STRING; 269084.syc1584_c; -.
DR   MEROPS; S14.001; -.
DR   EnsemblBacteria; BAD79774; BAD79774; syc1584_c.
DR   KEGG; syc:syc1584_c; -.
DR   eggNOG; COG0740; Bacteria.
DR   OMA; RDYWMKA; -.
DR   Proteomes; UP000001175; 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   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   TIGRFAMs; TIGR00493; clpP; 1.
DR   PROSITE; PS00382; CLP_PROTEASE_HIS; 1.
DR   PROSITE; PS00381; CLP_PROTEASE_SER; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Hydrolase; Protease; Serine protease.
FT   CHAIN           1..240
FT                   /note="ATP-dependent Clp protease proteolytic subunit 3"
FT                   /id="PRO_0000179685"
FT   ACT_SITE        132
FT                   /note="Nucleophile"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00444"
FT   ACT_SITE        157
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00444"
SQ   SEQUENCE   240 AA;  25987 MW;  865EA0FC3F7600F6 CRC64;
     MFSSHASLPI HSRRLAAGLD SRWQQPQIQA IAGSQAIVPT VVEQSGRGER AFDIYSRLLR
     ERIVFLGTGV DDAVADSIVA QLLFLEAEDP EKDIQLYINS PGGSVTAGMA IYDTMQQVAP
     DVATICFGLA ASMGAFLLSG GAQGKRMALP SARIMIHQPL GGAQGQAVDI EIQAREILYH
     KSTLNDLLAQ HTGQPLEKIE VDTDRDFFMS PEEAKAYGLI DQVLTRPTMA ITDHNDAVLQ