ID   PUR9_BRAHW              Reviewed;         509 AA.
AC   C0QXU6;
DT   28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT   05-MAY-2009, sequence version 1.
DT   27-MAR-2024, entry version 83.
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=BHWA1_02509;
OS   Brachyspira hyodysenteriae (strain ATCC 49526 / WA1).
OC   Bacteria; Spirochaetota; Spirochaetia; Brachyspirales; Brachyspiraceae;
OC   Brachyspira.
OX   NCBI_TaxID=565034;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 49526 / WA1;
RX   PubMed=19262690; DOI=10.1371/journal.pone.0004641;
RA   Bellgard M.I., Wanchanthuek P., La T., Ryan K., Moolhuijzen P.,
RA   Albertyn Z., Shaban B., Motro Y., Dunn D.S., Schibeci D., Hunter A.,
RA   Barrero R., Phillips N.D., Hampson D.J.;
RT   "Genome sequence of the pathogenic intestinal spirochete Brachyspira
RT   hyodysenteriae reveals adaptations to its lifestyle in the porcine large
RT   intestine.";
RL   PLoS ONE 4:E4641-E4641(2009).
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; CP001357; ACN84962.1; -; Genomic_DNA.
DR   RefSeq; WP_012671989.1; NC_012225.1.
DR   AlphaFoldDB; C0QXU6; -.
DR   SMR; C0QXU6; -.
DR   STRING; 565034.BHWA1_02509; -.
DR   KEGG; bhy:BHWA1_02509; -.
DR   eggNOG; COG0138; Bacteria.
DR   HOGENOM; CLU_016316_5_2_12; -.
DR   UniPathway; UPA00074; UER00133.
DR   UniPathway; UPA00074; UER00135.
DR   Proteomes; UP000001803; 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..509
FT                   /note="Bifunctional purine biosynthesis protein PurH"
FT                   /id="PRO_1000122948"
FT   DOMAIN          1..145
FT                   /note="MGS-like"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01202"
SQ   SEQUENCE   509 AA;  57057 MW;  8F7D8B064BA4398F CRC64;
     MIKRALISVF YKDGILDFAK FLTSKNVEIV STGGTYKYLK ENNIPVIEVS EVTGAKEMLD
     GRVKTLDPKI HGAILAIRDN PTHMETIKER GITPIDMVIV NLYPFFEKVQ DDNLKFEEKI
     EFIDIGGPTM LRSAAKSFKD VVVISDVKDY DLVKSEMEKG EVSFETKKYL ASKVFNLTSA
     YDAAVSEFMF NSLESKEDKK LNYLNMSYAL QEELRYGENP HQGASYYVST TDKGSMKDFE
     QLNGKELSFN NIRDMDIALK IVLEFDESKK EYACSAIKHS TPCGAALGSS VLEAYNRTYE
     CDPTSIFGGI VAFNSTVDEA TAKELIKIFL EIVIAKDFTP EALEVLKTKK NLRVIKYKTN
     TNDKINLVKV DGGLLVQDED TTLIEDYKVV TEKKPTEEEM KNLIFGIKVV KYAKSNAIVV
     IKDFMAKGIG SGQTNRIWAC EDALERAGDG VVMASDAFFP FRDVVDACAK YNIKAIIQPG
     GSMRDQESID ACNEHGIAMI FTGIRHFKH
//