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PURE_SYNY3
ID   PURE_SYNY3              Reviewed;         176 AA.
AC   Q55498;
DT   01-NOV-1997, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1996, sequence version 1.
DT   03-AUG-2022, entry version 131.
DE   RecName: Full=N5-carboxyaminoimidazole ribonucleotide mutase {ECO:0000255|HAMAP-Rule:MF_01929};
DE            Short=N5-CAIR mutase {ECO:0000255|HAMAP-Rule:MF_01929};
DE            EC=5.4.99.18 {ECO:0000255|HAMAP-Rule:MF_01929};
DE   AltName: Full=5-(carboxyamino)imidazole ribonucleotide mutase {ECO:0000255|HAMAP-Rule:MF_01929};
GN   Name=purE {ECO:0000255|HAMAP-Rule:MF_01929}; OrderedLocusNames=sll0901;
OS   Synechocystis sp. (strain PCC 6803 / Kazusa).
OC   Bacteria; Cyanobacteria; Synechococcales; Merismopediaceae; Synechocystis;
OC   unclassified Synechocystis.
OX   NCBI_TaxID=1111708;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 27184 / PCC 6803 / N-1;
RX   PubMed=8590279; DOI=10.1093/dnares/2.4.153;
RA   Kaneko T., Tanaka A., Sato S., Kotani H., Sazuka T., Miyajima N.,
RA   Sugiura M., Tabata S.;
RT   "Sequence analysis of the genome of the unicellular cyanobacterium
RT   Synechocystis sp. strain PCC6803. I. Sequence features in the 1 Mb region
RT   from map positions 64% to 92% of the genome.";
RL   DNA Res. 2:153-166(1995).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=PCC 6803 / Kazusa;
RX   PubMed=8905231; DOI=10.1093/dnares/3.3.109;
RA   Kaneko T., Sato S., Kotani H., Tanaka A., Asamizu E., Nakamura Y.,
RA   Miyajima N., Hirosawa M., Sugiura M., Sasamoto S., Kimura T., Hosouchi T.,
RA   Matsuno A., Muraki A., Nakazaki N., Naruo K., Okumura S., Shimpo S.,
RA   Takeuchi C., Wada T., Watanabe A., Yamada M., Yasuda M., Tabata S.;
RT   "Sequence analysis of the genome of the unicellular cyanobacterium
RT   Synechocystis sp. strain PCC6803. II. Sequence determination of the entire
RT   genome and assignment of potential protein-coding regions.";
RL   DNA Res. 3:109-136(1996).
CC   -!- FUNCTION: Catalyzes the conversion of N5-carboxyaminoimidazole
CC       ribonucleotide (N5-CAIR) to 4-carboxy-5-aminoimidazole ribonucleotide
CC       (CAIR). {ECO:0000255|HAMAP-Rule:MF_01929}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=5-carboxyamino-1-(5-phospho-D-ribosyl)imidazole + H(+) = 5-
CC         amino-1-(5-phospho-D-ribosyl)imidazole-4-carboxylate;
CC         Xref=Rhea:RHEA:13193, ChEBI:CHEBI:15378, ChEBI:CHEBI:58730,
CC         ChEBI:CHEBI:77657; EC=5.4.99.18; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_01929};
CC   -!- PATHWAY: Purine metabolism; IMP biosynthesis via de novo pathway; 5-
CC       amino-1-(5-phospho-D-ribosyl)imidazole-4-carboxylate from 5-amino-1-(5-
CC       phospho-D-ribosyl)imidazole (N5-CAIR route): step 2/2.
CC       {ECO:0000255|HAMAP-Rule:MF_01929}.
CC   -!- SIMILARITY: Belongs to the AIR carboxylase family. Class I subfamily.
CC       {ECO:0000255|HAMAP-Rule:MF_01929}.
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DR   EMBL; BA000022; BAA10848.1; -; Genomic_DNA.
DR   PIR; S76001; S76001.
DR   AlphaFoldDB; Q55498; -.
DR   SMR; Q55498; -.
DR   IntAct; Q55498; 1.
DR   STRING; 1148.1001361; -.
DR   PaxDb; Q55498; -.
DR   EnsemblBacteria; BAA10848; BAA10848; BAA10848.
DR   KEGG; syn:sll0901; -.
DR   eggNOG; COG0041; Bacteria.
DR   InParanoid; Q55498; -.
DR   OMA; SNSIDGW; -.
DR   PhylomeDB; Q55498; -.
DR   UniPathway; UPA00074; UER00943.
DR   Proteomes; UP000001425; Chromosome.
DR   GO; GO:0034023; F:5-(carboxyamino)imidazole ribonucleotide mutase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0006189; P:'de novo' IMP biosynthetic process; IEA:UniProtKB-UniRule.
DR   HAMAP; MF_01929; PurE_classI; 1.
DR   InterPro; IPR033747; PurE_ClassI.
DR   InterPro; IPR000031; PurE_dom.
DR   InterPro; IPR024694; PurE_prokaryotes.
DR   Pfam; PF00731; AIRC; 1.
DR   PIRSF; PIRSF001338; AIR_carboxylase; 1.
DR   SMART; SM01001; AIRC; 1.
DR   TIGRFAMs; TIGR01162; purE; 1.
PE   3: Inferred from homology;
KW   Isomerase; Purine biosynthesis; Reference proteome.
FT   CHAIN           1..176
FT                   /note="N5-carboxyaminoimidazole ribonucleotide mutase"
FT                   /id="PRO_0000074979"
FT   BINDING         14
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01929"
FT   BINDING         17
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01929"
FT   BINDING         44
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01929"
SQ   SEQUENCE   176 AA;  18604 MW;  A1F87A630F18F8E4 CRC64;
     MTSPSPLVGI IMGSDSDLPT MAAAIAVCEE FAVPTEVAII SAHRTPERMV EYAQTAHQRG
     LRIIIAGAGG AAHLPGMVAA LTPLPVIGVP VQTKTLQGVD SLYSIVQMPG GIPVATVAIG
     NAKNAGLLAV QILASHNPVL LEKVQQYRQS LETMVLDKQA ELERLGYRAY LDQQNQ
 
 
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