ID   PUR9_LISMH              Reviewed;         509 AA.
AC   B8DDZ2;
DT   28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT   03-MAR-2009, sequence version 1.
DT   02-SEP-2026, entry version 78.
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=LMHCC_0799;
OS   Listeria monocytogenes serotype 4a (strain HCC23).
OC   Bacteria; Bacillati; Bacillota; Bacilli; Caryophanales; Listeriaceae;
OC   Listeria.
OX   NCBI_TaxID=552536;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=HCC23;
RX   PubMed=21602330; DOI=10.1128/jb.05236-11;
RA   Steele C.L., Donaldson J.R., Paul D., Banes M.M., Arick T., Bridges S.M.,
RA   Lawrence M.L.;
RT   "Genome sequence of lineage III Listeria monocytogenes strain HCC23.";
RL   J. Bacteriol. 193:3679-3680(2011).
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=(6R)-10-formyltetrahydrofolate + 5-amino-1-(5-phospho-beta-D-
CC         ribosyl)imidazole-4-carboxamide = 5-formamido-1-(5-phospho-D-
CC         ribosyl)imidazole-4-carboxamide + (6S)-5,6,7,8-tetrahydrofolate;
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=IMP + H2O = 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; CP001175; ACK39151.1; -; Genomic_DNA.
DR   RefSeq; WP_012581152.1; NC_011660.1.
DR   AlphaFoldDB; B8DDZ2; -.
DR   SMR; B8DDZ2; -.
DR   KEGG; lmh:LMHCC_0799; -.
DR   HOGENOM; CLU_016316_5_2_9; -.
DR   UniPathway; UPA00074; UER00133.
DR   UniPathway; UPA00074; UER00135.
DR   GO; GO:0005829; C:cytosol; IEA:TreeGrafter.
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   FunFam; 3.40.140.20:FF:000001; Bifunctional purine biosynthesis protein PurH; 1.
DR   FunFam; 3.40.140.20:FF:000002; Bifunctional purine biosynthesis protein PurH; 1.
DR   FunFam; 3.40.50.1380:FF:000001; Bifunctional purine biosynthesis protein PurH; 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; NF002049; PRK00881.1; 1.
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..509
FT                   /note="Bifunctional purine biosynthesis protein PurH"
FT                   /id="PRO_1000122963"
FT   DOMAIN          1..144
FT                   /note="MGS-like"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01202"
SQ   SEQUENCE   509 AA;  54912 MW;  D4182C31B3A9E31A CRC64;
     MKRALISVSD KNGIVPFAEK LVELGVEIIS TGGTKAAFEQ AGVPVTGIEE VTEFPEMLDG
     RVKTLHPAIH GGLLARRDTA EHMEAIAAHD IKPIDLVVVN LYPFQETIQK SGVTLEEAIE
     NIDIGGPSML RSAAKNYAAV TVVVDTVDYD TVLTELEEHG ATTFETRQRL AAKVFRHTAA
     YDALIAEYLT NITGETFPEK VTLTYNRKQV LRYGENPHQD AAFYTEPGTV ENSISSAKQL
     HGKELSYNNI RDADAALKIA SEFTEPVAVA VKHMNPCGVG VGENIEEAYL KAYEADETSI
     FGGIVALNKE VDAKTAEHMS KIFLEIIIAP SFSEEAFAIL TKKKNIRLLT VPFAGSVKGF
     EKTSVNGGLL IQASDSVIED TASYEVVTEK QPTEAEMKAL IAQWKIVKHV KSNAIVVGSD
     KQTLGIGAGQ MNRIGSALIA LEQAGEKAKG AVLASDAFFP MDDTVEAAAK AGITAIIQPG
     GSIKDKESIA MANKYGISMV LTHVRHFKH
//