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Entry: A0A1I7KVH8_9BURK
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ID   A0A1I7KVH8_9BURK        Unreviewed;       416 AA.
AC   A0A1I7KVH8;
DT   20-DEC-2017, integrated into UniProtKB/TrEMBL.
DT   20-DEC-2017, sequence version 1.
DT   24-JAN-2024, entry version 20.
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=SAMN05216350_11311 {ECO:0000313|EMBL:SFV01461.1};
OS   Polaromonas sp. YR568.
OC   Bacteria; Pseudomonadota; Betaproteobacteria; Burkholderiales;
OC   Comamonadaceae; Polaromonas.
OX   NCBI_TaxID=1855301 {ECO:0000313|EMBL:SFV01461.1, ECO:0000313|Proteomes:UP000217451};
RN   [1] {ECO:0000313|EMBL:SFV01461.1, ECO:0000313|Proteomes:UP000217451}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=YR568 {ECO:0000313|EMBL:SFV01461.1,
RC   ECO:0000313|Proteomes:UP000217451};
RA   de Groot N.N.;
RL   Submitted (OCT-2016) 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}.
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DR   EMBL; FPBM01000013; SFV01461.1; -; Genomic_DNA.
DR   AlphaFoldDB; A0A1I7KVH8; -.
DR   STRING; 1855301.SAMN05216350_11311; -.
DR   OrthoDB; 9804625at2; -.
DR   UniPathway; UPA00074; UER00942.
DR   Proteomes; UP000217451; 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          134..324
FT                   /note="ATP-grasp"
FT                   /evidence="ECO:0000259|PROSITE:PS50975"
FT   BINDING         122
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01928"
FT   BINDING         169
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01928"
FT   BINDING         174..180
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01928"
FT   BINDING         204..207
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01928"
FT   BINDING         212
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01928"
FT   BINDING         235
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01928"
FT   BINDING         294..295
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01928"
SQ   SEQUENCE   416 AA;  43214 MW;  AF6B0F9199659CED CRC64;
     MSLPSLPTGL PVFPGTVSAS GQPATLGVMG GGQLGRMFVH AAQRLGYFTA VLDPDAQSPA
     GLVSHHHIES DYSDEAGLAR LASLCAAVTT EFENVPAGAL KALAASLPVA PGAAAVGIAQ
     NRIEEKSHFT ASAAESGVLA GVTCAPYAVI ETQAQLEAVP ANLLPGILKT ARMGYDGKGQ
     VRVKNATELA AAWADLQRVP CVLEKMLPLK AECSVIVARG WNGDIVGFAP QRNVHVDGIL
     AVTEAYEGNM PVALAERAQA ATKTIANHVG YVGVLCVEFF LVDDGSADGA LIVNEMAPRP
     HNSGHYTMDA CDVSQFDLQV HAMAGLPLPQ PRQHSPAIML NLLGDVWFDA QGKARTPDWQ
     AVLALPGAHL HLYGKTEARA GRKMGHLNIT GADIAGVKAT ARKAAAILGL PGLGHL
//
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