ID   PUR9_CAMJR              Reviewed;         510 AA.
AC   Q5HUK6;
DT   16-AUG-2005, integrated into UniProtKB/Swiss-Prot.
DT   15-FEB-2005, sequence version 1.
DT   03-AUG-2022, entry version 91.
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}; OrderedLocusNames=CJE1033;
OS   Campylobacter jejuni (strain RM1221).
OC   Bacteria; Proteobacteria; Epsilonproteobacteria; Campylobacterales;
OC   Campylobacteraceae; Campylobacter.
OX   NCBI_TaxID=195099;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=RM1221;
RX   PubMed=15660156; DOI=10.1371/journal.pbio.0030015;
RA   Fouts D.E., Mongodin E.F., Mandrell R.E., Miller W.G., Rasko D.A.,
RA   Ravel J., Brinkac L.M., DeBoy R.T., Parker C.T., Daugherty S.C.,
RA   Dodson R.J., Durkin A.S., Madupu R., Sullivan S.A., Shetty J.U.,
RA   Ayodeji M.A., Shvartsbeyn A., Schatz M.C., Badger J.H., Fraser C.M.,
RA   Nelson K.E.;
RT   "Major structural differences and novel potential virulence mechanisms from
RT   the genomes of multiple Campylobacter species.";
RL   PLoS Biol. 3:72-85(2005).
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=(6S)-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:57454,
CC         ChEBI:CHEBI:58467, ChEBI:CHEBI:58475; 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; CP000025; AAW35364.1; -; Genomic_DNA.
DR   RefSeq; WP_002900032.1; NC_003912.7.
DR   AlphaFoldDB; Q5HUK6; -.
DR   SMR; Q5HUK6; -.
DR   KEGG; cjr:CJE1033; -.
DR   HOGENOM; CLU_016316_5_2_7; -.
DR   OMA; WRVAKFV; -.
DR   UniPathway; UPA00074; UER00133.
DR   UniPathway; UPA00074; UER00135.
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   Gene3D; 3.40.140.20; -; 2.
DR   Gene3D; 3.40.50.1380; -; 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   PANTHER; PTHR11692; PTHR11692; 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; SSF52335; SSF52335; 1.
DR   SUPFAM; SSF53927; SSF53927; 1.
DR   TIGRFAMs; TIGR00355; purH; 1.
DR   PROSITE; PS51855; MGS; 1.
PE   3: Inferred from homology;
KW   Hydrolase; Multifunctional enzyme; Purine biosynthesis; Transferase.
FT   CHAIN           1..510
FT                   /note="Bifunctional purine biosynthesis protein PurH"
FT                   /id="PRO_0000192080"
FT   DOMAIN          1..142
FT                   /note="MGS-like"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01202"
SQ   SEQUENCE   510 AA;  56505 MW;  9ACD82AD6ED23D50 CRC64;
     MRALLSVSDK EGIVEFGKEL ENLGFEILST GGTFKFLKEN GIKVMEVSDF TKSPELFEGR
     VKTLHPKIHG GILHKRSNEN HIKQAKENEI LGIDLVCVNL YPFKKTTIMS DDFDEIIENI
     DIGGPAMIRS AAKNYKDVMV LCDPLDYEKV IETLKKGQID ENFRLNLMIK AYEHTANYDA
     YIANYMNERF NGGFGASKFI VGQKVFDTKY GENPHQKGAL YEFDAFFSAN FKALKGEASF
     NNLTDINAAL NLASSFDKAP AIAIVKHGNP CGFAIKENLV QSYIHALKCD SVSAYGGVVA
     INGTLDEALA NKINEIYVEV IIAANVDEKA LAVFEGKKRI KIFTQESSFL IRSFDKYDFK
     HIDGGFVYQN SDEVGEDEFK NAKLMSQREA SKEELKDLEI AMKIAAFTKS NNVVYVKNGA
     MVAIGMGMTS RIDAAKVAIA KAKEMGLDLQ GCVLASEAFF PFRDSIDEAS KVGVKAIVEP
     GGSIRDDEVV KAADEYGMAL YFTGVRHFLH