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Database: UniProt
Entry: S3IS23_9ENTR
LinkDB: S3IS23_9ENTR
Original site: S3IS23_9ENTR 
ID   S3IS23_9ENTR            Unreviewed;       356 AA.
AC   S3IS23;
DT   18-SEP-2013, integrated into UniProtKB/TrEMBL.
DT   18-SEP-2013, sequence version 1.
DT   24-JAN-2024, entry version 48.
DE   RecName: Full=N5-carboxyaminoimidazole ribonucleotide synthase {ECO:0000256|HAMAP-Rule:MF_01928, ECO:0000256|RuleBase:RU361200};
DE            Short=N5-CAIR synthase {ECO:0000256|HAMAP-Rule:MF_01928, ECO:0000256|RuleBase:RU361200};
DE            EC=6.3.4.18 {ECO:0000256|HAMAP-Rule:MF_01928, ECO:0000256|RuleBase:RU361200};
DE   AltName: Full=5-(carboxyamino)imidazole ribonucleotide synthetase {ECO:0000256|HAMAP-Rule:MF_01928, ECO:0000256|RuleBase:RU361200};
GN   Name=purK {ECO:0000256|HAMAP-Rule:MF_01928,
GN   ECO:0000256|RuleBase:RU361200};
GN   ORFNames=HMPREF0201_03346 {ECO:0000313|EMBL:EPF15376.1};
OS   Cedecea davisae DSM 4568.
OC   Bacteria; Pseudomonadota; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Cedecea.
OX   NCBI_TaxID=566551 {ECO:0000313|EMBL:EPF15376.1, ECO:0000313|Proteomes:UP000014585};
RN   [1] {ECO:0000313|EMBL:EPF15376.1, ECO:0000313|Proteomes:UP000014585}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=DSM 4568 {ECO:0000313|EMBL:EPF15376.1,
RC   ECO:0000313|Proteomes:UP000014585};
RA   Weinstock G., Sodergren E., Lobos E.A., Fulton L., Fulton R., Courtney L.,
RA   Fronick C., O'Laughlin M., Godfrey J., Wilson R.M., Miner T., Farmer C.,
RA   Delehaunty K., Cordes M., Minx P., Tomlinson C., Chen J., Wollam A.,
RA   Pepin K.H., Palsikar V.B., Zhang X., Suruliraj S., Perna N.T., Plunkett G.,
RA   Warren W., Mitreva M., Mardis E.R., Wilson R.K.;
RL   Submitted (APR-2013) 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:0000256|HAMAP-Rule:MF_01928}.
CC   -!- FUNCTION: Catalyzes the ATP-dependent conversion of 5-aminoimidazole
CC       ribonucleotide (AIR) and HCO(3)- to N5-carboxyaminoimidazole
CC       ribonucleotide (N5-CAIR). {ECO:0000256|RuleBase:RU361200}.
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:0000256|HAMAP-Rule:MF_01928,
CC         ECO:0000256|RuleBase:RU361200};
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:0000256|HAMAP-Rule:MF_01928, ECO:0000256|RuleBase:RU361200}.
CC   -!- SUBUNIT: Homodimer. {ECO:0000256|HAMAP-Rule:MF_01928,
CC       ECO:0000256|RuleBase:RU361200}.
CC   -!- SIMILARITY: Belongs to the PurK/PurT family. {ECO:0000256|HAMAP-
CC       Rule:MF_01928, ECO:0000256|RuleBase:RU361200}.
CC   -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC       whole genome shotgun (WGS) entry which is preliminary data.
CC       {ECO:0000313|EMBL:EPF15376.1}.
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DR   EMBL; ATDT01000030; EPF15376.1; -; Genomic_DNA.
DR   RefSeq; WP_016537613.1; NZ_KE161030.1.
DR   AlphaFoldDB; S3IS23; -.
DR   STRING; 566551.HMPREF0201_03346; -.
DR   PATRIC; fig|566551.4.peg.3050; -.
DR   HOGENOM; CLU_011534_0_0_6; -.
DR   OrthoDB; 9804625at2; -.
DR   UniPathway; UPA00074; UER00942.
DR   Proteomes; UP000014585; Unassembled WGS sequence.
DR   GO; GO:0034028; F:5-(carboxyamino)imidazole ribonucleotide synthase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
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; 3.40.50.20; -; 1.
DR   Gene3D; 3.30.1490.20; ATP-grasp fold, A domain; 1.
DR   Gene3D; 3.30.470.20; ATP-grasp fold, B domain; 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   NCBIfam; TIGR01161; purK; 1.
DR   PANTHER; PTHR11609:SF5; PHOSPHORIBOSYLAMINOIMIDAZOLE CARBOXYLASE; 1.
DR   PANTHER; PTHR11609; PURINE BIOSYNTHESIS PROTEIN 6/7, PUR6/7; 1.
DR   Pfam; PF02222; ATP-grasp; 1.
DR   Pfam; PF17769; PurK_C; 1.
DR   SUPFAM; SSF56059; Glutathione synthetase ATP-binding domain-like; 1.
DR   SUPFAM; SSF52440; PreATP-grasp domain; 1.
DR   SUPFAM; SSF51246; Rudiment single hybrid motif; 1.
DR   PROSITE; PS50975; ATP_GRASP; 1.
PE   3: Inferred from homology;
KW   ATP-binding {ECO:0000256|ARBA:ARBA00022840, ECO:0000256|HAMAP-
KW   Rule:MF_01928};
KW   Ligase {ECO:0000256|HAMAP-Rule:MF_01928, ECO:0000256|RuleBase:RU361200};
KW   Nucleotide-binding {ECO:0000256|HAMAP-Rule:MF_01928, ECO:0000256|PROSITE-
KW   ProRule:PRU00409};
KW   Purine biosynthesis {ECO:0000256|ARBA:ARBA00022755, ECO:0000256|HAMAP-
KW   Rule:MF_01928}.
FT   DOMAIN          84..267
FT                   /note="ATP-grasp"
FT                   /evidence="ECO:0000259|PROSITE:PS50975"
FT   BINDING         80
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01928"
FT   BINDING         120
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01928"
FT   BINDING         125..131
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01928"
FT   BINDING         153..156
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01928"
FT   BINDING         161
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01928"
FT   BINDING         184
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01928"
FT   BINDING         237..238
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01928"
SQ   SEQUENCE   356 AA;  39442 MW;  7C9BFAD1908C2335 CRC64;
     MKQVCVLGNG QLGRMLRQAG EPLGIAVYPV GLDAEPEAVP FAQSVITAEI ERWPETALTR
     ELARHNAFVN RDVFPIIADR LTQKQLFDKL GLATAPWQLL SGSDEWNDVF GKLGSLAIVK
     RRVGGYDGRG QWRLRADETD QLPEECYGEC IVEQGINFSG EVSLVGARGH DGNTVFYPLT
     HNLHQDGILR TSVAFPHANA EQQRQAETML SAIMHELKYV GVMAMECFIT PSGLLINELA
     PRVHNSGHWT QNGASISQFE LHLRAIVDLP LPQPVVNAPS VMVNLIGTDL NYDWLKLPLV
     HLHWYDKEVR PGRKVGHLNL NDSDTDRLSA SLEAIVPLLP PEYASGIAWA QSKLVK
//
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