ID   PURK_VIBVU              Reviewed;         377 AA.
AC   Q8DDD8;
DT   08-NOV-2005, integrated into UniProtKB/Swiss-Prot.
DT   01-MAR-2003, sequence version 1.
DT   03-AUG-2022, entry version 109.
DE   RecName: Full=N5-carboxyaminoimidazole ribonucleotide synthase {ECO:0000255|HAMAP-Rule:MF_01928};
DE            Short=N5-CAIR synthase {ECO:0000255|HAMAP-Rule:MF_01928};
DE            EC=6.3.4.18 {ECO:0000255|HAMAP-Rule:MF_01928};
DE   AltName: Full=5-(carboxyamino)imidazole ribonucleotide synthetase {ECO:0000255|HAMAP-Rule:MF_01928};
GN   Name=purK {ECO:0000255|HAMAP-Rule:MF_01928}; OrderedLocusNames=VV1_1053;
OS   Vibrio vulnificus (strain CMCP6).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Vibrionales; Vibrionaceae;
OC   Vibrio.
OX   NCBI_TaxID=216895;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CMCP6;
RA   Rhee J.H., Kim S.Y., Chung S.S., Kim J.J., Moon Y.H., Jeong H., Choy H.E.;
RT   "Complete genome sequence of Vibrio vulnificus CMCP6.";
RL   Submitted (DEC-2002) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Catalyzes the ATP-dependent conversion of 5-aminoimidazole
CC       ribonucleotide (AIR) and HCO(3)(-) to N5-carboxyaminoimidazole
CC       ribonucleotide (N5-CAIR). {ECO:0000255|HAMAP-Rule:MF_01928}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=5-amino-1-(5-phospho-beta-D-ribosyl)imidazole + ATP +
CC         hydrogencarbonate = 5-carboxyamino-1-(5-phospho-D-ribosyl)imidazole +
CC         ADP + 2 H(+) + phosphate; Xref=Rhea:RHEA:19317, ChEBI:CHEBI:15378,
CC         ChEBI:CHEBI:17544, ChEBI:CHEBI:30616, ChEBI:CHEBI:43474,
CC         ChEBI:CHEBI:58730, ChEBI:CHEBI:137981, ChEBI:CHEBI:456216;
CC         EC=6.3.4.18; Evidence={ECO:0000255|HAMAP-Rule:MF_01928};
CC   -!- PATHWAY: Purine metabolism; IMP biosynthesis via de novo pathway; 5-
CC       amino-1-(5-phospho-D-ribosyl)imidazole-4-carboxylate from 5-amino-1-(5-
CC       phospho-D-ribosyl)imidazole (N5-CAIR route): step 1/2.
CC       {ECO:0000255|HAMAP-Rule:MF_01928}.
CC   -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_01928}.
CC   -!- SIMILARITY: Belongs to the PurK/PurT family. {ECO:0000255|HAMAP-
CC       Rule:MF_01928}.
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DR   EMBL; AE016795; AAO09540.1; -; Genomic_DNA.
DR   RefSeq; WP_011079086.1; NC_004459.3.
DR   AlphaFoldDB; Q8DDD8; -.
DR   SMR; Q8DDD8; -.
DR   EnsemblBacteria; AAO09540; AAO09540; VV1_1053.
DR   KEGG; vvu:VV1_1053; -.
DR   HOGENOM; CLU_011534_0_0_6; -.
DR   OMA; ITFDHEH; -.
DR   UniPathway; UPA00074; UER00942.
DR   Proteomes; UP000002275; Chromosome 1.
DR   GO; GO:0034028; F:5-(carboxyamino)imidazole ribonucleotide synthase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-KW.
DR   GO; GO:0046872; F:metal ion binding; IEA:InterPro.
DR   GO; GO:0004638; F:phosphoribosylaminoimidazole carboxylase activity; IEA:InterPro.
DR   GO; GO:0006189; P:'de novo' IMP biosynthetic process; IEA:UniProtKB-UniRule.
DR   Gene3D; 3.30.1490.20; -; 1.
DR   HAMAP; MF_01928; PurK; 1.
DR   InterPro; IPR011761; ATP-grasp.
DR   InterPro; IPR003135; ATP-grasp_carboxylate-amine.
DR   InterPro; IPR013815; ATP_grasp_subdomain_1.
DR   InterPro; IPR016185; PreATP-grasp_dom_sf.
DR   InterPro; IPR005875; PurK.
DR   InterPro; IPR040686; PurK_C.
DR   InterPro; IPR011054; Rudment_hybrid_motif.
DR   Pfam; PF02222; ATP-grasp; 1.
DR   Pfam; PF17769; PurK_C; 1.
DR   SUPFAM; SSF51246; SSF51246; 1.
DR   SUPFAM; SSF52440; SSF52440; 1.
DR   TIGRFAMs; TIGR01161; purK; 1.
DR   PROSITE; PS50975; ATP_GRASP; 1.
PE   3: Inferred from homology;
KW   ATP-binding; Ligase; Nucleotide-binding; Purine biosynthesis.
FT   CHAIN           1..377
FT                   /note="N5-carboxyaminoimidazole ribonucleotide synthase"
FT                   /id="PRO_0000075018"
FT   DOMAIN          97..287
FT                   /note="ATP-grasp"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01928"
FT   BINDING         93
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01928"
FT   BINDING         133
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01928"
FT   BINDING         138..144
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01928"
FT   BINDING         175..178
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01928"
FT   BINDING         183
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01928"
FT   BINDING         206
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01928"
FT   BINDING         257..258
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01928"
SQ   SEQUENCE   377 AA;  41231 MW;  6533CC9932BA21C0 CRC64;
     MHVLVLGAGQ LARMMSLAGA PLNIQISAYD VTTGDVVHPL TLHLLGHGLE QAIEYVDVIT
     AEFEHIPHDV LAICQASGKF LPSSEAIKAG GDRRLEKALL DHAGVRNANY YVIETREDFN
     KAIEHVGIPM VLKSALGGYD GKGQWRLKDA AQIETLWQEM AACIAATPTQ AIVAEEFVPF
     QREVSLIGAR GKEGQIEVYP LAENIHVNGV LSLSTAIDSP DLQEQAKHMF TAVAETLNYV
     GVLALEFFDV DGQLLVNEIA PRVHNSGHWT QQGAETCQFE NHLRAVCGLP LGSTKLVRET
     SMINILGEDT LPASVMAMDG CHIHWYGKEK RAGRKMGHIN VCGDYSGELQ RRLCALANVL
     DEKAFPAVHE FAKKWQA