ID   PUR9_BACC3              Reviewed;         511 AA.
AC   C1EV67;
DT   28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT   26-MAY-2009, sequence version 1.
DT   27-MAR-2024, entry version 79.
DE   RecName: Full=Bifunctional purine biosynthesis protein PurH {ECO:0000255|HAMAP-Rule:MF_00139};
DE   Includes:
DE     RecName: Full=Phosphoribosylaminoimidazolecarboxamide formyltransferase {ECO:0000255|HAMAP-Rule:MF_00139};
DE              EC=2.1.2.3 {ECO:0000255|HAMAP-Rule:MF_00139};
DE     AltName: Full=AICAR transformylase {ECO:0000255|HAMAP-Rule:MF_00139};
DE   Includes:
DE     RecName: Full=IMP cyclohydrolase {ECO:0000255|HAMAP-Rule:MF_00139};
DE              EC=3.5.4.10 {ECO:0000255|HAMAP-Rule:MF_00139};
DE     AltName: Full=ATIC {ECO:0000255|HAMAP-Rule:MF_00139};
DE     AltName: Full=IMP synthase {ECO:0000255|HAMAP-Rule:MF_00139};
DE     AltName: Full=Inosinicase {ECO:0000255|HAMAP-Rule:MF_00139};
GN   Name=purH {ECO:0000255|HAMAP-Rule:MF_00139};
GN   OrderedLocusNames=BCA_0372;
OS   Bacillus cereus (strain 03BB102).
OC   Bacteria; Bacillota; Bacilli; Bacillales; Bacillaceae; Bacillus;
OC   Bacillus cereus group.
OX   NCBI_TaxID=572264;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=03BB102;
RA   Dodson R.J., Jackson P., Munk A.C., Brettin T., Bruce D., Detter C.,
RA   Tapia R., Han C., Sutton G., Sims D.;
RT   "Genome sequence of Bacillus cereus 03BB102.";
RL   Submitted (FEB-2009) to the EMBL/GenBank/DDBJ databases.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=(6R)-10-formyltetrahydrofolate + 5-amino-1-(5-phospho-beta-D-
CC         ribosyl)imidazole-4-carboxamide = (6S)-5,6,7,8-tetrahydrofolate + 5-
CC         formamido-1-(5-phospho-D-ribosyl)imidazole-4-carboxamide;
CC         Xref=Rhea:RHEA:22192, ChEBI:CHEBI:57453, ChEBI:CHEBI:58467,
CC         ChEBI:CHEBI:58475, ChEBI:CHEBI:195366; EC=2.1.2.3;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00139};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=H2O + IMP = 5-formamido-1-(5-phospho-D-ribosyl)imidazole-4-
CC         carboxamide; Xref=Rhea:RHEA:18445, ChEBI:CHEBI:15377,
CC         ChEBI:CHEBI:58053, ChEBI:CHEBI:58467; EC=3.5.4.10;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00139};
CC   -!- PATHWAY: Purine metabolism; IMP biosynthesis via de novo pathway; 5-
CC       formamido-1-(5-phospho-D-ribosyl)imidazole-4-carboxamide from 5-amino-
CC       1-(5-phospho-D-ribosyl)imidazole-4-carboxamide (10-formyl THF route):
CC       step 1/1. {ECO:0000255|HAMAP-Rule:MF_00139}.
CC   -!- PATHWAY: Purine metabolism; IMP biosynthesis via de novo pathway; IMP
CC       from 5-formamido-1-(5-phospho-D-ribosyl)imidazole-4-carboxamide: step
CC       1/1. {ECO:0000255|HAMAP-Rule:MF_00139}.
CC   -!- DOMAIN: The IMP cyclohydrolase activity resides in the N-terminal
CC       region. {ECO:0000255|HAMAP-Rule:MF_00139}.
CC   -!- SIMILARITY: Belongs to the PurH family. {ECO:0000255|HAMAP-
CC       Rule:MF_00139}.
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DR   EMBL; CP001407; ACO30819.1; -; Genomic_DNA.
DR   RefSeq; WP_000745421.1; NZ_CP009318.1.
DR   AlphaFoldDB; C1EV67; -.
DR   SMR; C1EV67; -.
DR   KEGG; bcx:BCA_0372; -.
DR   PATRIC; fig|572264.18.peg.361; -.
DR   UniPathway; UPA00074; UER00133.
DR   UniPathway; UPA00074; UER00135.
DR   Proteomes; UP000002210; Chromosome.
DR   GO; GO:0003937; F:IMP cyclohydrolase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0004643; F:phosphoribosylaminoimidazolecarboxamide formyltransferase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0006189; P:'de novo' IMP biosynthetic process; IEA:UniProtKB-UniRule.
DR   CDD; cd01421; IMPCH; 1.
DR   Gene3D; 3.40.140.20; -; 2.
DR   Gene3D; 3.40.50.1380; Methylglyoxal synthase-like domain; 1.
DR   HAMAP; MF_00139; PurH; 1.
DR   InterPro; IPR024051; AICAR_Tfase_dup_dom_sf.
DR   InterPro; IPR016193; Cytidine_deaminase-like.
DR   InterPro; IPR011607; MGS-like_dom.
DR   InterPro; IPR036914; MGS-like_dom_sf.
DR   InterPro; IPR002695; PurH-like.
DR   NCBIfam; TIGR00355; purH; 1.
DR   PANTHER; PTHR11692:SF0; BIFUNCTIONAL PURINE BIOSYNTHESIS PROTEIN ATIC; 1.
DR   PANTHER; PTHR11692; BIFUNCTIONAL PURINE BIOSYNTHESIS PROTEIN PURH; 1.
DR   Pfam; PF01808; AICARFT_IMPCHas; 1.
DR   Pfam; PF02142; MGS; 1.
DR   PIRSF; PIRSF000414; AICARFT_IMPCHas; 1.
DR   SMART; SM00798; AICARFT_IMPCHas; 1.
DR   SMART; SM00851; MGS; 1.
DR   SUPFAM; SSF53927; Cytidine deaminase-like; 1.
DR   SUPFAM; SSF52335; Methylglyoxal synthase-like; 1.
DR   PROSITE; PS51855; MGS; 1.
PE   3: Inferred from homology;
KW   Hydrolase; Multifunctional enzyme; Purine biosynthesis; Transferase.
FT   CHAIN           1..511
FT                   /note="Bifunctional purine biosynthesis protein PurH"
FT                   /id="PRO_1000122946"
FT   DOMAIN          1..145
FT                   /note="MGS-like"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01202"
SQ   SEQUENCE   511 AA;  55646 MW;  67DCFA595E72BAF9 CRC64;
     MKKRALVSVS DKTGVVEFVK GLLEQGIEVI STGGTKKLLE ENGLQVIGIS EVTGFPEIMD
     GRVKTLHPNI HGGLLAVRDN ETHVAQMNEL GMEPIDFVIV NLYPFKETIA KPDVTFADAI
     ENIDIGGPTM IRSAAKNHKF VSVIVDPVDY DVVLAELKEN GEVKEETKRK LAAKVFRHTA
     AYDALISNYL TEQMGEESPE TLTVTFEKKQ DLRYGENPHQ KATFYKAPFT VTSSVAYAEQ
     LHGKELSYNN INDADAALSI VKEFTEPAVV AVKHMNPCGV GVGTDIHEAY TRAYEADPVS
     IFGGIIAANR EIDKATAEKL HEIFLEIIIA PSFSKEALEV LQSKKNLRLL TVNIEKATSA
     SKKLTSVQGG LLVQEEDTLS LDESTISIPT KREPSEQEWK DLKLAWKVVK HVKSNAIVLA
     KDDMTIGVGA GQMNRVGSAK IAITQAGEKA QGSALASDAF FPMPDTVEEA AKAGITAIIQ
     PGGSIRDEDS IKVADTYGIA MVFTGVRHFK H
//