ID   HIS4_BUCAP              Reviewed;         244 AA.
AC   Q9ZHE2;
DT   30-MAY-2000, integrated into UniProtKB/Swiss-Prot.
DT   01-MAY-1999, sequence version 1.
DT   03-AUG-2022, entry version 127.
DE   RecName: Full=1-(5-phosphoribosyl)-5-[(5-phosphoribosylamino)methylideneamino] imidazole-4-carboxamide isomerase;
DE            EC=5.3.1.16;
DE   AltName: Full=Phosphoribosylformimino-5-aminoimidazole carboxamide ribotide isomerase;
GN   Name=hisA; OrderedLocusNames=BUsg_097;
OS   Buchnera aphidicola subsp. Schizaphis graminum (strain Sg).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Erwiniaceae; Buchnera.
OX   NCBI_TaxID=198804;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=9767718; DOI=10.1007/s002849900392;
RA   Clark M.A., Baumann L., Baumann P.;
RT   "Buchnera aphidicola (Aphid endosymbiont) contains genes encoding enzymes
RT   of histidine biosynthesis.";
RL   Curr. Microbiol. 37:356-358(1998).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Sg;
RX   PubMed=12089438; DOI=10.1126/science.1071278;
RA   Tamas I., Klasson L., Canbaeck B., Naeslund A.K., Eriksson A.-S.,
RA   Wernegreen J.J., Sandstroem J.P., Moran N.A., Andersson S.G.E.;
RT   "50 million years of genomic stasis in endosymbiotic bacteria.";
RL   Science 296:2376-2379(2002).
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=1-(5-phospho-beta-D-ribosyl)-5-[(5-phospho-beta-D-
CC         ribosylamino)methylideneamino]imidazole-4-carboxamide = 5-[(5-
CC         phospho-1-deoxy-D-ribulos-1-ylimino)methylamino]-1-(5-phospho-beta-D-
CC         ribosyl)imidazole-4-carboxamide; Xref=Rhea:RHEA:15469,
CC         ChEBI:CHEBI:58435, ChEBI:CHEBI:58525; EC=5.3.1.16;
CC   -!- PATHWAY: Amino-acid biosynthesis; L-histidine biosynthesis; L-histidine
CC       from 5-phospho-alpha-D-ribose 1-diphosphate: step 4/9.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the HisA/HisF family. {ECO:0000305}.
CC   ---------------------------------------------------------------------------
CC   Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC   Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC   ---------------------------------------------------------------------------
DR   EMBL; AF067228; AAC97359.1; -; Genomic_DNA.
DR   EMBL; AE013218; AAM67667.1; -; Genomic_DNA.
DR   RefSeq; WP_011053633.1; NC_004061.1.
DR   AlphaFoldDB; Q9ZHE2; -.
DR   SMR; Q9ZHE2; -.
DR   STRING; 198804.BUsg_097; -.
DR   EnsemblBacteria; AAM67667; AAM67667; BUsg_097.
DR   KEGG; bas:BUsg_097; -.
DR   eggNOG; COG0106; Bacteria.
DR   HOGENOM; CLU_048577_1_2_6; -.
DR   OMA; EWLHLVD; -.
DR   OrthoDB; 794219at2; -.
DR   UniPathway; UPA00031; UER00009.
DR   Proteomes; UP000000416; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0003949; F:1-(5-phosphoribosyl)-5-[(5-phosphoribosylamino)methylideneamino]imidazole-4-carboxamide isomerase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0000105; P:histidine biosynthetic process; IEA:UniProtKB-UniRule.
DR   CDD; cd04732; HisA; 1.
DR   Gene3D; 3.20.20.70; -; 1.
DR   HAMAP; MF_01014; HisA; 1.
DR   InterPro; IPR013785; Aldolase_TIM.
DR   InterPro; IPR006062; His_biosynth.
DR   InterPro; IPR006063; HisA_bact_arch.
DR   InterPro; IPR044524; Isoase_HisA-like.
DR   InterPro; IPR023016; Isoase_HisA-like_bact.
DR   InterPro; IPR011060; RibuloseP-bd_barrel.
DR   PANTHER; PTHR43090; PTHR43090; 1.
DR   Pfam; PF00977; His_biosynth; 1.
DR   SUPFAM; SSF51366; SSF51366; 1.
DR   TIGRFAMs; TIGR00007; TIGR00007; 1.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis; Cytoplasm; Histidine biosynthesis; Isomerase.
FT   CHAIN           1..244
FT                   /note="1-(5-phosphoribosyl)-5-[(5-
FT                   phosphoribosylamino)methylideneamino] imidazole-4-
FT                   carboxamide isomerase"
FT                   /id="PRO_0000141988"
FT   ACT_SITE        7
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000250"
FT   ACT_SITE        129
FT                   /note="Proton donor"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   244 AA;  27775 MW;  5F572E598F9EBCCB CRC64;
     MIIPAFDLIN GEIVRLYKGN FFNRTKYDIN LYKRLKDYEI KGVKKIHLVD LDGAKNIKDR
     QIKVFRDIIS YTNIPIQIGG GIRNEEDINM FLNLGVKKVV IGSSAIKNKT KVKKWLKIYG
     PNVIILALDI IIKNNNKEIA IHGWQETTNI TLEEIIEYFS PIGLKHVLCT DISKDGTLSG
     PNNILYKDIV KKFKHISFQA SGGVSRLKDL LSLKKTGVKS VIIGRSLLEN KFTIEEALKC
     WQSE