ID   Y021_SYNY3              Reviewed;         277 AA.
AC   Q55682;
DT   01-NOV-1997, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1997, sequence version 1.
DT   03-AUG-2022, entry version 118.
DE   RecName: Full=Putative protease slr0021;
DE            EC=3.4.21.-;
GN   OrderedLocusNames=slr0021;
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=ATCC 27184 / PCC 6803 / N-1;
RX   PubMed=8590279; DOI=10.1093/dnares/2.4.153;
RA   Kaneko T., Tanaka A., Sato S., Kotani H., Sazuka T., Miyajima N.,
RA   Sugiura M., Tabata S.;
RT   "Sequence analysis of the genome of the unicellular cyanobacterium
RT   Synechocystis sp. strain PCC6803. I. Sequence features in the 1 Mb region
RT   from map positions 64% to 92% of the genome.";
RL   DNA Res. 2:153-166(1995).
RN   [2]
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   -!- SIMILARITY: Belongs to the peptidase S49 family. {ECO:0000305}.
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DR   EMBL; BA000022; BAA10208.1; -; Genomic_DNA.
DR   PIR; S76356; S76356.
DR   AlphaFoldDB; Q55682; -.
DR   SMR; Q55682; -.
DR   STRING; 1148.1001581; -.
DR   PaxDb; Q55682; -.
DR   EnsemblBacteria; BAA10208; BAA10208; BAA10208.
DR   KEGG; syn:slr0021; -.
DR   eggNOG; COG0616; Bacteria.
DR   InParanoid; Q55682; -.
DR   OMA; DSQEIHA; -.
DR   PhylomeDB; Q55682; -.
DR   Proteomes; UP000001425; Chromosome.
DR   GO; GO:0008236; F:serine-type peptidase activity; IEA:UniProtKB-KW.
DR   GO; GO:0006508; P:proteolysis; IEA:UniProtKB-KW.
DR   CDD; cd07023; S49_Sppa_N_C; 1.
DR   InterPro; IPR029045; ClpP/crotonase-like_dom_sf.
DR   InterPro; IPR004635; Pept_S49_SppA.
DR   InterPro; IPR002142; Peptidase_S49.
DR   Pfam; PF01343; Peptidase_S49; 1.
DR   SUPFAM; SSF52096; SSF52096; 1.
DR   TIGRFAMs; TIGR00706; SppA_dom; 1.
PE   3: Inferred from homology;
KW   Hydrolase; Protease; Reference proteome; Serine protease.
FT   CHAIN           1..277
FT                   /note="Putative protease slr0021"
FT                   /id="PRO_0000171455"
FT   ACT_SITE        85
FT                   /note="Nucleophile"
FT                   /evidence="ECO:0000250"
FT   ACT_SITE        137
FT                   /note="Proton donor/acceptor"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   277 AA;  30274 MW;  5FDDEC5C3630E2F0 CRC64;
     MIWPFKTSTR KKIARIEVTG AIASGTRKAV LKALKTVEEK KYPALLVRID SPGGTVVDSQ
     EIYTKLKQLS EKIKVVASFG NISASGGVYI AMGCPHIMAN SGTITGSIGV ILRGNNLERL
     LEKVGVSFKV IKSGPYKDIL SFDRELLPEE QSILQALIDD SYGQFVSTVA AGRNLAVEKV
     KEFADGRIFT GQQALELGLV DRLGTEEDAR QWAATLAGLD PDKVELDTIE DPKPLVRRLT
     GGDSQLQTMA DNLGLTESLK WCEFELSTSG QPLWLYR