ID   KGUA_SYNJB              Reviewed;         221 AA.
AC   Q2JQ59;
DT   12-DEC-2006, integrated into UniProtKB/Swiss-Prot.
DT   07-MAR-2006, sequence version 1.
DT   03-AUG-2022, entry version 83.
DE   RecName: Full=Guanylate kinase {ECO:0000255|HAMAP-Rule:MF_00328};
DE            EC=2.7.4.8 {ECO:0000255|HAMAP-Rule:MF_00328};
DE   AltName: Full=GMP kinase {ECO:0000255|HAMAP-Rule:MF_00328};
GN   Name=gmk {ECO:0000255|HAMAP-Rule:MF_00328}; OrderedLocusNames=CYB_0056;
OS   Synechococcus sp. (strain JA-2-3B'a(2-13)) (Cyanobacteria bacterium
OS   Yellowstone B-Prime).
OC   Bacteria; Cyanobacteria; Synechococcales; Synechococcaceae; Synechococcus;
OC   unclassified Synechococcus.
OX   NCBI_TaxID=321332;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=JA-2-3B'a(2-13);
RX   PubMed=18059494; DOI=10.1038/ismej.2007.46;
RA   Bhaya D., Grossman A.R., Steunou A.-S., Khuri N., Cohan F.M., Hamamura N.,
RA   Melendrez M.C., Bateson M.M., Ward D.M., Heidelberg J.F.;
RT   "Population level functional diversity in a microbial community revealed by
RT   comparative genomic and metagenomic analyses.";
RL   ISME J. 1:703-713(2007).
CC   -!- FUNCTION: Essential for recycling GMP and indirectly, cGMP.
CC       {ECO:0000255|HAMAP-Rule:MF_00328}.
CC   -!- FUNCTION: (Microbial infection) Catalyzes the phosphorylation of dZMP
CC       to dZDP, when the bacterium is infected by a phage that produces the
CC       substrate for the synthesis of dZTP (2- amino-2'-deoxyadenosine 5'-
CC       triphosphate), which is then used by the phage as a DNA polymerase
CC       substrate. {ECO:0000250|UniProtKB:Q9KNM4}.
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; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_00328};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=ATP + dZMP = ADP + dZDP; Xref=Rhea:RHEA:67640,
CC         ChEBI:CHEBI:30616, ChEBI:CHEBI:172927, ChEBI:CHEBI:172929,
CC         ChEBI:CHEBI:456216; Evidence={ECO:0000250|UniProtKB:Q9KNM4};
CC   -!- PATHWAY: Purine metabolism. {ECO:0000250|UniProtKB:Q9KNM4}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00328}.
CC   -!- SIMILARITY: Belongs to the guanylate kinase family. {ECO:0000255|HAMAP-
CC       Rule:MF_00328}.
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DR   EMBL; CP000240; ABD01057.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q2JQ59; -.
DR   SMR; Q2JQ59; -.
DR   STRING; 321332.CYB_0056; -.
DR   KEGG; cyb:CYB_0056; -.
DR   eggNOG; COG0194; Bacteria.
DR   HOGENOM; CLU_001715_1_2_3; -.
DR   OMA; EWAVVHG; -.
DR   Proteomes; UP000001938; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0004385; F:guanylate kinase activity; IEA:UniProtKB-UniRule.
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..221
FT                   /note="Guanylate kinase"
FT                   /id="PRO_0000266423"
FT   DOMAIN          32..210
FT                   /note="Guanylate kinase-like"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00328"
FT   REGION          1..32
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        1..27
FT                   /note="Polar residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   BINDING         39..46
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00328"
SQ   SEQUENCE   221 AA;  25209 MW;  6B1DF7FD1064859D CRC64;
     MRRSLSMPTS PTPVSSECTQ QQGSLPAPTP RGRLVVLTGP SGVGKGTLVN QLRQRHPELY
     LSVSVTTRPP RPSEQEGVNY YFRSREEFLN LIEANELLEW AQYAGNFYGT PREIVFQKLN
     QGQDVLLEIE LAGARQVRQQ YPDAIRIFLC PPSLEELERR IRERGQDSEA SIERRLEQAR
     KELDAQDEFD YVIVNDNLEQ ALQELEALLY PPSPSSKEQQ P