ID   KGUA_SYNY3              Reviewed;         191 AA.
AC   P72648;
DT   01-NOV-1997, integrated into UniProtKB/Swiss-Prot.
DT   01-FEB-1997, sequence version 1.
DT   03-AUG-2022, entry version 120.
DE   RecName: Full=Guanylate kinase;
DE            EC=2.7.4.8;
DE   AltName: Full=GMP kinase;
GN   Name=gmk; OrderedLocusNames=slr1123;
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: Essential for recycling GMP and indirectly, cGMP.
CC       {ECO:0000250}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=ATP + GMP = ADP + GDP; Xref=Rhea:RHEA:20780,
CC         ChEBI:CHEBI:30616, ChEBI:CHEBI:58115, ChEBI:CHEBI:58189,
CC         ChEBI:CHEBI:456216; EC=2.7.4.8;
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the guanylate kinase family. {ECO:0000305}.
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DR   EMBL; BA000022; BAA16650.1; -; Genomic_DNA.
DR   PIR; S74498; S74498.
DR   AlphaFoldDB; P72648; -.
DR   SMR; P72648; -.
DR   STRING; 1148.1651722; -.
DR   PaxDb; P72648; -.
DR   EnsemblBacteria; BAA16650; BAA16650; BAA16650.
DR   KEGG; syn:slr1123; -.
DR   eggNOG; COG0194; Bacteria.
DR   InParanoid; P72648; -.
DR   OMA; EWAVVHG; -.
DR   PhylomeDB; P72648; -.
DR   Proteomes; UP000001425; Chromosome.
DR   GO; GO:0005829; C:cytosol; IBA:GO_Central.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0004385; F:guanylate kinase activity; IBA:GO_Central.
DR   GO; GO:0016310; P:phosphorylation; IEA:UniProtKB-KW.
DR   Gene3D; 3.40.50.300; -; 1.
DR   HAMAP; MF_00328; Guanylate_kinase; 1.
DR   InterPro; IPR008145; GK/Ca_channel_bsu.
DR   InterPro; IPR008144; Guanylate_kin-like_dom.
DR   InterPro; IPR017665; Guanylate_kinase.
DR   InterPro; IPR020590; Guanylate_kinase_CS.
DR   InterPro; IPR027417; P-loop_NTPase.
DR   Pfam; PF00625; Guanylate_kin; 1.
DR   SMART; SM00072; GuKc; 1.
DR   SUPFAM; SSF52540; SSF52540; 1.
DR   TIGRFAMs; TIGR03263; guanyl_kin; 1.
DR   PROSITE; PS00856; GUANYLATE_KINASE_1; 1.
DR   PROSITE; PS50052; GUANYLATE_KINASE_2; 1.
PE   3: Inferred from homology;
KW   ATP-binding; Cytoplasm; Kinase; Nucleotide-binding; Reference proteome;
KW   Transferase.
FT   CHAIN           1..191
FT                   /note="Guanylate kinase"
FT                   /id="PRO_0000170629"
FT   DOMAIN          10..188
FT                   /note="Guanylate kinase-like"
FT   BINDING         17..24
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   191 AA;  21427 MW;  E92B5FCC6602FBB9 CRC64;
     MAPDQTSVKG QLIVLTGPSG VGKGTLVQLL LERQPHWFLS ISATTRSPRA GEVDGQSYYF
     LTKEEFQTWI GEEKLLEWAE YAGNYYGTPR QPVEEQIAQG KTVLLEIEVL GARQIKQTFP
     SARRIFILPP SVEVLEERLR GRGSDSETAI AKRLAQAQQE LQAAAEFDYQ VVNDDLDQAL
     HRLVKLIGEE E