ID   G6PI_NITMU              Reviewed;         542 AA.
AC   Q2YBU4;
DT   04-APR-2006, integrated into UniProtKB/Swiss-Prot.
DT   04-APR-2006, sequence version 2.
DT   03-AUG-2022, entry version 89.
DE   RecName: Full=Glucose-6-phosphate isomerase {ECO:0000255|HAMAP-Rule:MF_00473};
DE            Short=GPI {ECO:0000255|HAMAP-Rule:MF_00473};
DE            EC=5.3.1.9 {ECO:0000255|HAMAP-Rule:MF_00473};
DE   AltName: Full=Phosphoglucose isomerase {ECO:0000255|HAMAP-Rule:MF_00473};
DE            Short=PGI {ECO:0000255|HAMAP-Rule:MF_00473};
DE   AltName: Full=Phosphohexose isomerase {ECO:0000255|HAMAP-Rule:MF_00473};
DE            Short=PHI {ECO:0000255|HAMAP-Rule:MF_00473};
GN   Name=pgi {ECO:0000255|HAMAP-Rule:MF_00473}; OrderedLocusNames=Nmul_A0469;
OS   Nitrosospira multiformis (strain ATCC 25196 / NCIMB 11849 / C 71).
OC   Bacteria; Proteobacteria; Betaproteobacteria; Nitrosomonadales;
OC   Nitrosomonadaceae; Nitrosospira.
OX   NCBI_TaxID=323848;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 25196 / NCIMB 11849 / C 71;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C., Glavina T.,
RA   Hammon N., Israni S., Pitluck S., Chain P., Malfatti S., Shin M.,
RA   Vergez L., Schmutz J., Larimer F., Land M., Hauser L., Kyrpides N.,
RA   Lykidis A., Richardson P.;
RT   "Complete sequence of chromosome 1 of Nitrosospira multiformis ATCC
RT   25196.";
RL   Submitted (AUG-2005) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Catalyzes the reversible isomerization of glucose-6-phosphate
CC       to fructose-6-phosphate. {ECO:0000255|HAMAP-Rule:MF_00473}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=alpha-D-glucose 6-phosphate = beta-D-fructose 6-phosphate;
CC         Xref=Rhea:RHEA:11816, ChEBI:CHEBI:57634, ChEBI:CHEBI:58225;
CC         EC=5.3.1.9; Evidence={ECO:0000255|HAMAP-Rule:MF_00473};
CC   -!- PATHWAY: Carbohydrate biosynthesis; gluconeogenesis.
CC       {ECO:0000255|HAMAP-Rule:MF_00473}.
CC   -!- PATHWAY: Carbohydrate degradation; glycolysis; D-glyceraldehyde 3-
CC       phosphate and glycerone phosphate from D-glucose: step 2/4.
CC       {ECO:0000255|HAMAP-Rule:MF_00473}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00473}.
CC   -!- SIMILARITY: Belongs to the GPI family. {ECO:0000255|HAMAP-
CC       Rule:MF_00473}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=ABB73777.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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DR   EMBL; CP000103; ABB73777.1; ALT_INIT; Genomic_DNA.
DR   AlphaFoldDB; Q2YBU4; -.
DR   SMR; Q2YBU4; -.
DR   STRING; 323848.Nmul_A0469; -.
DR   EnsemblBacteria; ABB73777; ABB73777; Nmul_A0469.
DR   KEGG; nmu:Nmul_A0469; -.
DR   eggNOG; COG0166; Bacteria.
DR   HOGENOM; CLU_017947_3_1_4; -.
DR   UniPathway; UPA00109; UER00181.
DR   UniPathway; UPA00138; -.
DR   Proteomes; UP000002718; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0097367; F:carbohydrate derivative binding; IEA:InterPro.
DR   GO; GO:0004347; F:glucose-6-phosphate isomerase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0006094; P:gluconeogenesis; IEA:UniProtKB-UniRule.
DR   GO; GO:0006096; P:glycolytic process; IEA:UniProtKB-UniRule.
DR   CDD; cd05015; SIS_PGI_1; 1.
DR   CDD; cd05016; SIS_PGI_2; 1.
DR   Gene3D; 1.10.1390.10; -; 1.
DR   HAMAP; MF_00473; G6P_isomerase; 1.
DR   InterPro; IPR001672; G6P_Isomerase.
DR   InterPro; IPR023096; G6P_Isomerase_C.
DR   InterPro; IPR018189; Phosphoglucose_isomerase_CS.
DR   InterPro; IPR046348; SIS_dom_sf.
DR   InterPro; IPR035476; SIS_PGI_1.
DR   InterPro; IPR035482; SIS_PGI_2.
DR   PANTHER; PTHR11469; PTHR11469; 1.
DR   Pfam; PF00342; PGI; 1.
DR   PRINTS; PR00662; G6PISOMERASE.
DR   SUPFAM; SSF53697; SSF53697; 1.
DR   PROSITE; PS00765; P_GLUCOSE_ISOMERASE_1; 1.
DR   PROSITE; PS00174; P_GLUCOSE_ISOMERASE_2; 1.
DR   PROSITE; PS51463; P_GLUCOSE_ISOMERASE_3; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Gluconeogenesis; Glycolysis; Isomerase; Reference proteome.
FT   CHAIN           1..542
FT                   /note="Glucose-6-phosphate isomerase"
FT                   /id="PRO_0000230922"
FT   ACT_SITE        354
FT                   /note="Proton donor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00473"
FT   ACT_SITE        385
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00473"
FT   ACT_SITE        505
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00473"
SQ   SEQUENCE   542 AA;  61372 MW;  AE18529F71512298 CRC64;
     MITPLTQRPA WKALEAHYQT IKGMHLRQLF ADDPKRGERF TAEAVGLYLD YSKNRITDET
     LHLLVQLAEE CGLRERIEAM FRGDAINVTE QRAVLHIALR APRNEKILVD GNDVVPGVHA
     VLDRMADFSD KIRSGDWQGH TGKRIRNIIN IGIGGSDLGP VMAYEALRHY SLHNLSFRFI
     SNVDGTDFVE ATRGLDPEET LFIICSKTFT TTETLANAHT ARRWMLRQIK DLEGVRKHFV
     AVSTNAEEVA RFGIDTANMF EFWDWVGGRY SMDSAIGLST MIAVGPENFR EMLAGFHAMD
     QHFYSAPFDR NLPVLMGLLS LWYNNFFGAQ TLAVLPYEQY LKRFPAYLQQ LTMESNGKHI
     TLNGSQVDYQ TSPIVWGEPG TNGQHSFYQL IHQGTRLIPC DFIGFCQTLN PLGDHHDLLM
     ANLFAQTEAL AFGKTEDEVK AEGVPDWLCP HRSFEGNRPT NTILAERLTP HTLGALVALY
     EQSVFTQGTI WQIDSFDQWG VELGKVLAHR IGQELEDENG KSLKHDSSTN ALIQRYNRLK
     QK