ID   G6PI_PROMM              Reviewed;         551 AA.
AC   Q7V7M6;
DT   29-MAR-2005, integrated into UniProtKB/Swiss-Prot.
DT   29-MAR-2005, sequence version 2.
DT   03-AUG-2022, entry version 92.
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=PMT_0714;
OS   Prochlorococcus marinus (strain MIT 9313).
OC   Bacteria; Cyanobacteria; Synechococcales; Prochlorococcaceae;
OC   Prochlorococcus.
OX   NCBI_TaxID=74547;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=MIT 9313;
RX   PubMed=12917642; DOI=10.1038/nature01947;
RA   Rocap G., Larimer F.W., Lamerdin J.E., Malfatti S., Chain P., Ahlgren N.A.,
RA   Arellano A., Coleman M., Hauser L., Hess W.R., Johnson Z.I., Land M.L.,
RA   Lindell D., Post A.F., Regala W., Shah M., Shaw S.L., Steglich C.,
RA   Sullivan M.B., Ting C.S., Tolonen A., Webb E.A., Zinser E.R.,
RA   Chisholm S.W.;
RT   "Genome divergence in two Prochlorococcus ecotypes reflects oceanic niche
RT   differentiation.";
RL   Nature 424:1042-1047(2003).
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=CAE20889.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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DR   EMBL; BX548175; CAE20889.1; ALT_INIT; Genomic_DNA.
DR   AlphaFoldDB; Q7V7M6; -.
DR   SMR; Q7V7M6; -.
DR   STRING; 74547.PMT_0714; -.
DR   EnsemblBacteria; CAE20889; CAE20889; PMT_0714.
DR   KEGG; pmt:PMT_0714; -.
DR   eggNOG; COG0166; Bacteria.
DR   HOGENOM; CLU_033288_0_0_3; -.
DR   UniPathway; UPA00109; UER00181.
DR   UniPathway; UPA00138; -.
DR   Proteomes; UP000001423; 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   HAMAP; MF_00473; G6P_isomerase; 1.
DR   InterPro; IPR001672; G6P_Isomerase.
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; 2.
DR   PRINTS; PR00662; G6PISOMERASE.
DR   SUPFAM; SSF53697; SSF53697; 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..551
FT                   /note="Glucose-6-phosphate isomerase"
FT                   /id="PRO_0000180705"
FT   ACT_SITE        349
FT                   /note="Proton donor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00473"
FT   ACT_SITE        378
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00473"
FT   ACT_SITE        480
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00473"
SQ   SEQUENCE   551 AA;  60929 MW;  B569FD6DC1F98AD0 CRC64;
     MSRHFDRGSF RAVSDVHQLM SFPDFSASDA HVQWQRFNNL LWHHNDLGIW LDISRMHINA
     EDFERLGPRF DQAFKAMQAL EQGAIANTDE QRMVGHYWLR QPQLAPDQEV CDHIAKEIDL
     IETFGSNVIN GLIKAPNGKK FTDVLWIGIG GSGLGPLLMI RALQNAEQGL RFHFFDNVDP
     DGMSRVLGNL GDALSTTLVV TVSKSGATPE PHLGMEQARQ RLEAMGGHWA GQAVAVTMLN
     SQLDQLAQKE SWLKRFDMFD WVGGRTSITS AVGLLPAALI GCDIRAFLAG AAQMDEATRV
     SDLHSNPASL MAAAWFVAGD GLGRRDMVVL PYRDRLEVFS RYLQQLVMES LGKRLDRDGN
     VVHQGLAVYG NKGSTDQHAY VQQLRDGVDN FFATFIEVLE DVENIPAINN EHPGDFLDGF
     LQGTRAALSQ GGRQSLTISM RRFDPRRLGA LVALFERAVG LYGELVNINA YHQPGVESGK
     KAAAAILNLQ SRVEDLLADG VERSAGEIHQ VIGDGSEEAI FWIMRHLTAN KRGYVAEGDW
     GIPTSLRFSK G