If an enzyme name is shown in bold, there is experimental evidence for this enzymatic activity.
Locations of Mapped Genes:
|Superclasses:||Generation of Precursor Metabolites and Energy|
Accumulation of D-sedoheptulose 7-phosphate, an intermediate of the pentose phosphate pathway (non-oxidative branch), leads to its utilization via the sedoheptulose bisphospate bypass pathway, described here. The pathway was discovered due to the unexpected near-wild type growth of a talA talB double null mutant on xylose [Nakahigashi09].
6-Phosphofructokinase I is able to phosphorylate D-sedoheptulose 7-phosphate, producing D-sedoheptulose-1,7-bisphosphate, which is in turn split into glycerone phosphate and D-erythrose 4-phosphate by fructose bisphosphate aldolase.
Nakahigashi09: Nakahigashi K, Toya Y, Ishii N, Soga T, Hasegawa M, Watanabe H, Takai Y, Honma M, Mori H, Tomita M (2009). "Systematic phenome analysis of Escherichia coli multiple-knockout mutants reveals hidden reactions in central carbon metabolism." Mol Syst Biol 5;306. PMID: 19756045
Alefounder89: Alefounder PR, Baldwin SA, Perham RN, Short NJ (1989). "Cloning, sequence analysis and over-expression of the gene for the class II fructose 1,6-bisphosphate aldolase of Escherichia coli." Biochem J 1989;257(2);529-34. PMID: 2649077
Alefounder89a: Alefounder PR, Perham RN (1989). "Identification, molecular cloning and sequence analysis of a gene cluster encoding the class II fructose 1,6-bisphosphate aldolase, 3-phosphoglycerate kinase and a putative second glyceraldehyde 3-phosphate dehydrogenase of Escherichia coli." Mol Microbiol 3(6);723-32. PMID: 2546007
Auzat94: Auzat I, Le Bras G, Garel JR (1994). "The cooperativity and allosteric inhibition of Escherichia coli phosphofructokinase depend on the interaction between threonine-125 and ATP." Proc Natl Acad Sci U S A 91(12);5242-6. PMID: 8202475
Auzat94a: Auzat I, Le Bras G, Branny P, De La Torre F, Theunissen B, Garel JR (1994). "The role of Glu187 in the regulation of phosphofructokinase by phosphoenolpyruvate." J Mol Biol 235(1);68-72. PMID: 7904653
Baldwin78: Baldwin SA, Perham RN, Stribling D (1978). "Purification and characterization of the class-II D-fructose 1,6-bisphosphate aldolase from Escherichia coli (Crookes' strain)." Biochem J 1978;169(3);633-41. PMID: 417719
Baldwin78a: Baldwin SA, Perham RN (1978). "Novel kinetic and structural properties of the class-I D-fructose 1,6-bisphosphate aldolase from Escherichia coli (Crookes' strain)." Biochem J 1978;169(3);643-52. PMID: 348198
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