GMHA_ECODH
ID GMHA_ECODH Reviewed; 192 AA.
AC B1XD84;
DT 24-MAR-2009, integrated into UniProtKB/Swiss-Prot.
DT 20-MAY-2008, sequence version 1.
DT 03-AUG-2022, entry version 74.
DE RecName: Full=Phosphoheptose isomerase {ECO:0000255|HAMAP-Rule:MF_00067};
DE EC=5.3.1.28 {ECO:0000255|HAMAP-Rule:MF_00067};
DE AltName: Full=Sedoheptulose 7-phosphate isomerase {ECO:0000255|HAMAP-Rule:MF_00067};
GN Name=gmhA {ECO:0000255|HAMAP-Rule:MF_00067};
GN OrderedLocusNames=ECDH10B_0204;
OS Escherichia coli (strain K12 / DH10B).
OC Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC Enterobacteriaceae; Escherichia.
OX NCBI_TaxID=316385;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=K12 / DH10B;
RX PubMed=18245285; DOI=10.1128/jb.01695-07;
RA Durfee T., Nelson R., Baldwin S., Plunkett G. III, Burland V., Mau B.,
RA Petrosino J.F., Qin X., Muzny D.M., Ayele M., Gibbs R.A., Csorgo B.,
RA Posfai G., Weinstock G.M., Blattner F.R.;
RT "The complete genome sequence of Escherichia coli DH10B: insights into the
RT biology of a laboratory workhorse.";
RL J. Bacteriol. 190:2597-2606(2008).
CC -!- FUNCTION: Catalyzes the isomerization of sedoheptulose 7-phosphate in
CC D-glycero-D-manno-heptose 7-phosphate. {ECO:0000255|HAMAP-
CC Rule:MF_00067}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=2 D-sedoheptulose 7-phosphate = D-glycero-alpha-D-manno-
CC heptose 7-phosphate + D-glycero-beta-D-manno-heptose 7-phosphate;
CC Xref=Rhea:RHEA:27489, ChEBI:CHEBI:57483, ChEBI:CHEBI:60203,
CC ChEBI:CHEBI:60204; EC=5.3.1.28; Evidence={ECO:0000255|HAMAP-
CC Rule:MF_00067};
CC -!- COFACTOR:
CC Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00067};
CC Note=Binds 1 zinc ion per subunit. {ECO:0000255|HAMAP-Rule:MF_00067};
CC -!- PATHWAY: Carbohydrate biosynthesis; D-glycero-D-manno-heptose 7-
CC phosphate biosynthesis; D-glycero-alpha-D-manno-heptose 7-phosphate and
CC D-glycero-beta-D-manno-heptose 7-phosphate from sedoheptulose 7-
CC phosphate: step 1/1. {ECO:0000255|HAMAP-Rule:MF_00067}.
CC -!- SUBUNIT: Homotetramer. {ECO:0000255|HAMAP-Rule:MF_00067}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00067}.
CC -!- MISCELLANEOUS: The reaction produces a racemic mixture of D-glycero-
CC alpha-D-manno-heptose 7-phosphate and D-glycero-beta-D-manno-heptose 7-
CC phosphate. {ECO:0000255|HAMAP-Rule:MF_00067}.
CC -!- SIMILARITY: Belongs to the SIS family. GmhA subfamily.
CC {ECO:0000255|HAMAP-Rule:MF_00067}.
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DR EMBL; CP000948; ACB01393.1; -; Genomic_DNA.
DR RefSeq; WP_000284050.1; NC_010473.1.
DR AlphaFoldDB; B1XD84; -.
DR SMR; B1XD84; -.
DR GeneID; 66671459; -.
DR KEGG; ecd:ECDH10B_0204; -.
DR HOGENOM; CLU_080999_4_0_6; -.
DR OMA; FLAHKEA; -.
DR BioCyc; ECOL316385:ECDH10B_RS01030-MON; -.
DR UniPathway; UPA00041; UER00436.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0097367; F:carbohydrate derivative binding; IEA:InterPro.
DR GO; GO:0008968; F:D-sedoheptulose 7-phosphate isomerase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0008270; F:zinc ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0005975; P:carbohydrate metabolic process; IEA:UniProtKB-UniRule.
DR GO; GO:2001061; P:D-glycero-D-manno-heptose 7-phosphate biosynthetic process; IEA:UniProtKB-UniPathway.
DR CDD; cd05006; SIS_GmhA; 1.
DR HAMAP; MF_00067; GmhA; 1.
DR InterPro; IPR035461; GmhA/DiaA.
DR InterPro; IPR004515; Phosphoheptose_Isoase.
DR InterPro; IPR001347; SIS_dom.
DR InterPro; IPR046348; SIS_dom_sf.
DR Pfam; PF13580; SIS_2; 1.
DR SUPFAM; SSF53697; SSF53697; 1.
DR TIGRFAMs; TIGR00441; gmhA; 1.
DR PROSITE; PS51464; SIS; 1.
PE 3: Inferred from homology;
KW Carbohydrate metabolism; Cytoplasm; Isomerase; Metal-binding; Zinc.
FT CHAIN 1..192
FT /note="Phosphoheptose isomerase"
FT /id="PRO_1000092271"
FT DOMAIN 37..192
FT /note="SIS"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00067"
FT BINDING 52..54
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00067"
FT BINDING 61
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00067"
FT BINDING 65
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00067"
FT BINDING 65
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00067"
FT BINDING 93..94
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00067"
FT BINDING 119..121
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00067"
FT BINDING 124
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00067"
FT BINDING 172
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00067"
FT BINDING 172
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00067"
FT BINDING 180
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00067"
SQ SEQUENCE 192 AA; 20815 MW; 7A2C05E1079108B4 CRC64;
MYQDLIRNEL NEAAETLANF LKDDANIHAI QRAAVLLADS FKAGGKVLSC GNGGSHCDAM
HFAEELTGRY RENRPGYPAI AISDVSHISC VGNDFGFNDI FSRYVEAVGR EGDVLLGIST
SGNSANVIKA IAAAREKGMK VITLTGKDGG KMAGTADIEI RVPHFGYADR IQEIHIKVIH
ILIQLIEKEM VK
