ID   G6PI_HELPJ              Reviewed;         545 AA.
AC   Q9ZK49;
DT   01-DEC-2000, integrated into UniProtKB/Swiss-Prot.
DT   01-MAY-1999, sequence version 1.
DT   03-AUG-2022, entry version 121.
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=jhp_1093;
OS   Helicobacter pylori (strain J99 / ATCC 700824) (Campylobacter pylori J99).
OC   Bacteria; Proteobacteria; Epsilonproteobacteria; Campylobacterales;
OC   Helicobacteraceae; Helicobacter.
OX   NCBI_TaxID=85963;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=J99 / ATCC 700824;
RX   PubMed=9923682; DOI=10.1038/16495;
RA   Alm R.A., Ling L.-S.L., Moir D.T., King B.L., Brown E.D., Doig P.C.,
RA   Smith D.R., Noonan B., Guild B.C., deJonge B.L., Carmel G., Tummino P.J.,
RA   Caruso A., Uria-Nickelsen M., Mills D.M., Ives C., Gibson R., Merberg D.,
RA   Mills S.D., Jiang Q., Taylor D.E., Vovis G.F., Trust T.J.;
RT   "Genomic sequence comparison of two unrelated isolates of the human gastric
RT   pathogen Helicobacter pylori.";
RL   Nature 397:176-180(1999).
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, ECO:0000305}.
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DR   EMBL; AE001439; AAD06664.1; -; Genomic_DNA.
DR   PIR; E71851; E71851.
DR   RefSeq; WP_000957659.1; NZ_CP011330.1.
DR   AlphaFoldDB; Q9ZK49; -.
DR   SMR; Q9ZK49; -.
DR   STRING; 85963.jhp_1093; -.
DR   EnsemblBacteria; AAD06664; AAD06664; jhp_1093.
DR   KEGG; hpj:jhp_1093; -.
DR   PATRIC; fig|85963.30.peg.1489; -.
DR   eggNOG; COG0166; Bacteria.
DR   OMA; IGVWYIN; -.
DR   UniPathway; UPA00109; UER00181.
DR   UniPathway; UPA00138; -.
DR   Proteomes; UP000000804; 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.
FT   CHAIN           1..545
FT                   /note="Glucose-6-phosphate isomerase"
FT                   /id="PRO_0000180653"
FT   ACT_SITE        351
FT                   /note="Proton donor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00473"
FT   ACT_SITE        382
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00473"
FT   ACT_SITE        510
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00473"
SQ   SEQUENCE   545 AA;  62303 MW;  7DB544D95FD1D237 CRC64;
     MLTQLKTYPK LLKHYEEIKE VHMRDWFSKD KERASRYFVQ LESLSLDYSK NRLNDTTLKL
     LFELAKDCSL KEKIEAMFKG EKINTTEKRA VLHTALRSLN DAEILLDNME VLKSVRSVLK
     RMRAFSDSVR SGKRLGYTNQ VITDIVNIGI GGSDLGALMV CTALKRYGHP RLKMHFVSNV
     DGTQILDVLE KINPASTLFI VASKTFSTQE TLTNALTARK WFVERSGDEK HIAKHFVAVS
     TNKEAVQQFG IDEHNMFEFW DFVGGRYSLW SAIGLSIMIY LGKKNFNALL KGAYLMDEHF
     RNAPFESNLP VLMGLIGVWY INFFQSKSHL IAPYDQYLRH FPKFIQQLDM ESNGKRISKK
     GEIIPYDTCP VVWGDMGINA QHAFFQLLHQ GTHLIPIDFI ASLDKKPNAK GHHEILFSNV
     LAQAQAFMKG KSYEEALGEL LSKGLDKDEA KDLAHHRVFF GNRPSNILLL EKISPSNIGA
     LVALYEHKVF VQGVIWDINS FDQWGVELGK ELAVPILQEL EGHKSNAYFD SSTRHLIELY
     KNYNQ