ID   PUR9_DESHY              Reviewed;         518 AA.
AC   Q24QH6;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   18-APR-2006, sequence version 1.
DT   27-MAR-2024, entry version 94.
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=DSY3927;
OS   Desulfitobacterium hafniense (strain Y51).
OC   Bacteria; Bacillota; Clostridia; Eubacteriales; Desulfitobacteriaceae;
OC   Desulfitobacterium.
OX   NCBI_TaxID=138119;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Y51;
RX   PubMed=16513756; DOI=10.1128/jb.188.6.2262-2274.2006;
RA   Nonaka H., Keresztes G., Shinoda Y., Ikenaga Y., Abe M., Naito K.,
RA   Inatomi K., Furukawa K., Inui M., Yukawa H.;
RT   "Complete genome sequence of the dehalorespiring bacterium
RT   Desulfitobacterium hafniense Y51 and comparison with Dehalococcoides
RT   ethenogenes 195.";
RL   J. Bacteriol. 188:2262-2274(2006).
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; AP008230; BAE85716.1; -; Genomic_DNA.
DR   RefSeq; WP_005817232.1; NC_007907.1.
DR   AlphaFoldDB; Q24QH6; -.
DR   SMR; Q24QH6; -.
DR   STRING; 138119.DSY3927; -.
DR   KEGG; dsy:DSY3927; -.
DR   eggNOG; COG0138; Bacteria.
DR   HOGENOM; CLU_016316_5_2_9; -.
DR   UniPathway; UPA00074; UER00133.
DR   UniPathway; UPA00074; UER00135.
DR   Proteomes; UP000001946; 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; Reference proteome;
KW   Transferase.
FT   CHAIN           1..518
FT                   /note="Bifunctional purine biosynthesis protein PurH"
FT                   /id="PRO_1000018885"
FT   DOMAIN          1..144
FT                   /note="MGS-like"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01202"
SQ   SEQUENCE   518 AA;  56114 MW;  E7DA270C19594570 CRC64;
     MNRRAVLSVS NKTGLVELAR GLVELGFDLI STGGTFKTLT EAGLPVRYVT EVTGFPEILD
     GRVKTLHPRI HGGILARATA EHLQQLEDNG IGLIDLVVVN LYPFKETIAR PGVSFQEAIE
     NIDIGGPSMV RAAAKNQERV SIVVNPERYP EVLQALREQG EISYDMRKRL AAEAFAHTAE
     YDQCIAGYLT AALAEESVSS SSSPFPATIT LGGQKAQDLR YGENPAQKAA FYRGADAAGT
     LAYGEQIQGK ELSYNNWMDM DAAWGIVQDF SEPACAIIKH TNPCGTALGK TALEAYEKAL
     AADPVSAFGG IIAFNRTVDA ECAASLKAHF YEVIVAHEFS SDARAILQEK KNLRLVKVAQ
     DGKPAHTPWK VRSIQGGFLI QEEDEGTTPI SAWEVVSKRQ PEPEELRELD FAWRVVKHVK
     SNAIVLAKAG QTLGVGAGQM NRVGSVKIAL EQAGDKAQGA YLASDAFFPF PDSLEEAAKA
     GVRAVVQPGG SVRDAEVIEA ADRLNLIMVF TNRRHFKH
//