ID   PURO_METMP              Reviewed;         201 AA.
AC   Q6LXN9;
DT   02-SEP-2008, integrated into UniProtKB/Swiss-Prot.
DT   05-JUL-2004, sequence version 1.
DT   03-AUG-2022, entry version 86.
DE   RecName: Full=IMP cyclohydrolase {ECO:0000255|HAMAP-Rule:MF_00705};
DE            EC=3.5.4.10 {ECO:0000255|HAMAP-Rule:MF_00705};
DE   AltName: Full=IMP synthase {ECO:0000255|HAMAP-Rule:MF_00705};
DE   AltName: Full=Inosinicase {ECO:0000255|HAMAP-Rule:MF_00705};
GN   Name=purO {ECO:0000255|HAMAP-Rule:MF_00705}; OrderedLocusNames=MMP1310;
OS   Methanococcus maripaludis (strain S2 / LL).
OC   Archaea; Euryarchaeota; Methanomada group; Methanococci; Methanococcales;
OC   Methanococcaceae; Methanococcus.
OX   NCBI_TaxID=267377;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=S2 / LL;
RX   PubMed=15466049; DOI=10.1128/jb.186.20.6956-6969.2004;
RA   Hendrickson E.L., Kaul R., Zhou Y., Bovee D., Chapman P., Chung J.,
RA   Conway de Macario E., Dodsworth J.A., Gillett W., Graham D.E., Hackett M.,
RA   Haydock A.K., Kang A., Land M.L., Levy R., Lie T.J., Major T.A.,
RA   Moore B.C., Porat I., Palmeiri A., Rouse G., Saenphimmachak C., Soell D.,
RA   Van Dien S., Wang T., Whitman W.B., Xia Q., Zhang Y., Larimer F.W.,
RA   Olson M.V., Leigh J.A.;
RT   "Complete genome sequence of the genetically tractable hydrogenotrophic
RT   methanogen Methanococcus maripaludis.";
RL   J. Bacteriol. 186:6956-6969(2004).
CC   -!- FUNCTION: Catalyzes the cyclization of 5-formylamidoimidazole-4-
CC       carboxamide ribonucleotide to IMP. {ECO:0000255|HAMAP-Rule:MF_00705}.
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_00705};
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_00705}.
CC   -!- SIMILARITY: Belongs to the archaeal IMP cyclohydrolase family.
CC       {ECO:0000255|HAMAP-Rule:MF_00705}.
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DR   EMBL; BX950229; CAF30866.1; -; Genomic_DNA.
DR   RefSeq; WP_011171254.1; NC_005791.1.
DR   AlphaFoldDB; Q6LXN9; -.
DR   SMR; Q6LXN9; -.
DR   STRING; 267377.MMP1310; -.
DR   PRIDE; Q6LXN9; -.
DR   EnsemblBacteria; CAF30866; CAF30866; MMP1310.
DR   GeneID; 2762594; -.
DR   KEGG; mmp:MMP1310; -.
DR   PATRIC; fig|267377.15.peg.1345; -.
DR   eggNOG; arCOG04727; Archaea.
DR   HOGENOM; CLU_1352116_0_0_2; -.
DR   OMA; HVDPIAE; -.
DR   OrthoDB; 106750at2157; -.
DR   BioCyc; MMAR267377:MMP_RS06750-MON; -.
DR   UniPathway; UPA00074; UER00135.
DR   Proteomes; UP000000590; Chromosome.
DR   GO; GO:0003937; F:IMP cyclohydrolase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0006189; P:'de novo' IMP biosynthetic process; IEA:UniProtKB-UniRule.
DR   Gene3D; 3.60.20.20; -; 1.
DR   HAMAP; MF_00705; IMP_cyclohydrol; 1.
DR   InterPro; IPR010191; IMP_cyclohydrolase.
DR   InterPro; IPR020600; IMP_cyclohydrolase-like.
DR   InterPro; IPR036795; IMP_cyclohydrolase-like_sf.
DR   Pfam; PF07826; IMP_cyclohyd; 1.
DR   PIRSF; PIRSF004866; IMP_cclhdr_arch; 1.
DR   SUPFAM; SSF75569; SSF75569; 1.
DR   TIGRFAMs; TIGR01922; purO_arch; 1.
PE   3: Inferred from homology;
KW   Hydrolase; Purine biosynthesis; Reference proteome.
FT   CHAIN           1..201
FT                   /note="IMP cyclohydrolase"
FT                   /id="PRO_0000349162"
SQ   SEQUENCE   201 AA;  22582 MW;  DDF823A30FB88A52 CRC64;
     MYIGRFLVLG KTDEGNPFVT YRVSSRSFPN RVAKVMNDET VAILPKDLEE MFKNPYITYN
     CVKLVGDVAV ATNGSHTDII ADKIKLGLPI RDALSYSLLT MDYEKDDYNT PRIAVVITKD
     EAYMGYVTDS DVRIKKVELE AGKAYYLSVY EACKITEHQV ISVTGKTAEE VTKFVMDYEE
     FEKPVTAATV LVKDGFKLAT I