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Database: UniProt
Entry: A0A1A9BHM7_9ACTN
LinkDB: A0A1A9BHM7_9ACTN
Original site: A0A1A9BHM7_9ACTN 
ID   A0A1A9BHM7_9ACTN        Unreviewed;       386 AA.
AC   A0A1A9BHM7;
DT   05-OCT-2016, integrated into UniProtKB/TrEMBL.
DT   05-OCT-2016, sequence version 1.
DT   24-JAN-2024, entry version 33.
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=GA0070622_5798 {ECO:0000313|EMBL:SBT68688.1};
OS   Micromonospora sediminicola.
OC   Bacteria; Actinomycetota; Actinomycetes; Micromonosporales;
OC   Micromonosporaceae; Micromonospora.
OX   NCBI_TaxID=946078 {ECO:0000313|EMBL:SBT68688.1, ECO:0000313|Proteomes:UP000199558};
RN   [1] {ECO:0000313|EMBL:SBT68688.1, ECO:0000313|Proteomes:UP000199558}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=DSM 45794 {ECO:0000313|EMBL:SBT68688.1,
RC   ECO:0000313|Proteomes:UP000199558};
RA   Kjaerup R.B., Dalgaard T.S., Juul-Madsen H.R.;
RL   Submitted (JUN-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}.
CC   -!- CAUTION: Lacks conserved residue(s) required for the propagation of
CC       feature annotation. {ECO:0000256|HAMAP-Rule:MF_01928}.
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DR   EMBL; FLRH01000004; SBT68688.1; -; Genomic_DNA.
DR   AlphaFoldDB; A0A1A9BHM7; -.
DR   STRING; 946078.GA0070622_5798; -.
DR   OrthoDB; 9804625at2; -.
DR   UniPathway; UPA00074; UER00942.
DR   Proteomes; UP000199558; 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          111..299
FT                   /note="ATP-grasp"
FT                   /evidence="ECO:0000259|PROSITE:PS50975"
FT   BINDING         107
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01928"
FT   BINDING         147
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01928"
FT   BINDING         184..187
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01928"
FT   BINDING         192
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01928"
FT   BINDING         269..270
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01928"
SQ   SEQUENCE   386 AA;  41100 MW;  036DB6B7CC46666B CRC64;
     MDSRTGLPVV GMVGGGQLAR MTHQAAIALG QSLRVLALAP DDGAALVAAD VQYGDHTDLT
     ALRTFAKGCD VVTFDHEHVP NDHIRALTDE GVKLFPPAEA LVHAQDKRVM RERLGELGAP
     NPAWRPVESP ADLVTFGRET GWPVVLKAAR GGYDGRGVWM VDDADRAAEL AATLLAGGTP
     LLVEERVALR RELAVQVARS PFGQVAAYPV VETVQRDGIC VEVLAPAPDL PEERAVAAQQ
     LAIDLATALG VVGLLAVELF DTPTGLVVNE LAMRPHNSGH WTIEGARTSQ FEQHLRAVLD
     YPMGDTSLAA PVVVMANVLG GEPGGMSIDE RLHHLFAAEP GAKVHLYGKQ VRPGRKIGHV
     TVLGTDLADV RARAARAARW LQEGTQ
//
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