Structure of a Class I Tagatose-1,6-bisphosphate Aldolase
نویسندگان
چکیده
منابع مشابه
Structure of Class II Tagatose - 1 , 6 - bisphosphate Aldolase 22019
ion of a proton from DHAP C1 would be feasible. Glu of FBPA corresponds to Glu in TBPA, which is also positioned on a glycine-rich loop. Due to the lack of reliable electron density, this residue has not been included in the TBPA model and it is presumed to be flexible and disordered. The sequence conservation of this loop in TBPA and FBPA is high (Fig. 2), which implies that Glu could adopt a ...
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Tagatose-1,6-bisphosphate aldolase from Streptococcus pyogenes is a class I aldolase that exhibits a remarkable lack of chiral discrimination with respect to the configuration of hydroxyl groups at both C3 and C4 positions. The enzyme catalyzes the reversible cleavage of four diastereoisomers (fructose 1,6-bisphosphate (FBP), psicose 1,6-bisphosphate, sorbose 1,6-bisphosphate, and tagatose 1,6-...
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Tagatose-1,6-biphosphate (TBP) aldolase from Streptococcus pyogenes is a class I aldolase that exhibits a remarkable lack of chiral discrimination with respect to the configuration of hydroxyl groups at both C3 and C4 positions. The enzyme catalyzes the reversible cleavage of four diastereoisomers: fructose-1,6-bisphosphate (FBP), psicose-1,6-bis-phosphate, sorbose-1,6bisphosphate and tagatose-...
متن کاملStructure of tagatose-1,6-bisphosphate aldolase. Insight into chiral discrimination, mechanism, and specificity of class II aldolases.
Tagatose-1,6-bisphosphate aldolase (TBPA) is a tetrameric class II aldolase that catalyzes the reversible condensation of dihydroxyacetone phosphate with glyceraldehyde 3-phosphate to produce tagatose 1,6-bisphosphate. The high resolution (1.45 A) crystal structure of the Escherichia coli enzyme, encoded by the agaY gene, complexed with phosphoglycolohydroxamate (PGH) has been determined. Two s...
متن کاملStructure, function and evolution of the Archaeal class I fructose-1,6-bisphosphate aldolase.
FBPA (fructose-1,6-bisphosphate aldolase) catalyses the reversible aldol condensation of glyceraldehyde 3-phosphate and dihydroxyacetone phosphate to form fructose 1,6-bisphosphate. Two classes of FBPA, which rely on different reaction mechanisms, have so far been discovered, class I mainly found in Eucarya and class II mainly in Bacteria. Only recently were genes encoding proteins with FBPA ac...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 2010
ISSN: 0021-9258
DOI: 10.1074/jbc.m109.080358