ID   G6PI_PROM4              Reviewed;         532 AA.
AC   A9BAE3;
DT   14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT   15-JAN-2008, sequence version 1.
DT   03-AUG-2022, entry version 81.
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=P9211_08741;
OS   Prochlorococcus marinus (strain MIT 9211).
OC   Bacteria; Cyanobacteria; Synechococcales; Prochlorococcaceae;
OC   Prochlorococcus.
OX   NCBI_TaxID=93059;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=MIT 9211;
RX   PubMed=18159947; DOI=10.1371/journal.pgen.0030231;
RA   Kettler G.C., Martiny A.C., Huang K., Zucker J., Coleman M.L., Rodrigue S.,
RA   Chen F., Lapidus A., Ferriera S., Johnson J., Steglich C., Church G.M.,
RA   Richardson P., Chisholm S.W.;
RT   "Patterns and implications of gene gain and loss in the evolution of
RT   Prochlorococcus.";
RL   PLoS Genet. 3:2515-2528(2007).
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}.
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DR   EMBL; CP000878; ABX08805.1; -; Genomic_DNA.
DR   RefSeq; WP_012195427.1; NC_009976.1.
DR   AlphaFoldDB; A9BAE3; -.
DR   SMR; A9BAE3; -.
DR   STRING; 93059.P9211_08741; -.
DR   EnsemblBacteria; ABX08805; ABX08805; P9211_08741.
DR   KEGG; pmj:P9211_08741; -.
DR   eggNOG; COG0166; Bacteria.
DR   HOGENOM; CLU_033288_0_0_3; -.
DR   OMA; CPAYAYG; -.
DR   UniPathway; UPA00109; UER00181.
DR   UniPathway; UPA00138; -.
DR   Proteomes; UP000000788; 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; 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; 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..532
FT                   /note="Glucose-6-phosphate isomerase"
FT                   /id="PRO_1000125743"
FT   ACT_SITE        330
FT                   /note="Proton donor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00473"
FT   ACT_SITE        359
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00473"
FT   ACT_SITE        460
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00473"
SQ   SEQUENCE   532 AA;  59492 MW;  5DBA6FBEADF5E3BF CRC64;
     MNLPDYSPNN SSLQWERFSE LLWHNEELGL WVDISRMNVN EHELKELKPI FQKAFEAMNS
     LEKGSMANID EERMVGHYWL RNPDLAPSRD ISKLIANQIS QIEQFTTSIL SGDIRSDAGE
     LFTDVLWIGI GGSGLGPLLL IESLQELNKG LKFHFLDNVD PIGIDKKLEL LQSKLSTTLF
     VVVSKSGGTP EPQIAMDQAR HVVETNGKNW PTRSVAITMC NSLLDNKAKQ ENWLKTFDLP
     DWVGGRTSIT GAVGLLPLGL IDSDLKSFLL GASKMDELTR NNELLDNPAA LMAMAWYSSG
     SAKGLKDMVV LPYRDSLEVF SRYLQQLVME SLGKKNDREG NIVFQGLSVY GNKGSTDQHA
     YVQQLRDGIN NFFVTFIEVL TNNESPCLNN KLPGDYLSGF MQGTRLALSD SNRQSLTITL
     KTFDPLSLGA LIALFERTVG LYAELININA YHQPGVEAGK KAAADILNLQ LQIEDILSDY
     SNYSIEQIST RLSSSNSESI YFILRNLVFN NKYSAKGSWK NPSSLIFKRE KL