The Enzyme Database

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Accepted name: acetoin—ribose-5-phosphate transaldolase
Reaction: 3-hydroxybutan-2-one + D-ribose 5-phosphate = acetaldehyde + 1-deoxy-D-altro-heptulose 7-phosphate
For diagram of reaction, click here
Glossary: thiamine diphosphate = 3-[(4-amino-2-methylpyrimidin-5-yl)methyl]-5-(2-diphosphoethyl)-4-methyl-1,3-thiazolium
Other name(s): 1-deoxy-D-altro-heptulose-7-phosphate synthetase; 1-deoxy-D-altro-heptulose-7-phosphate synthase; 3-hydroxybutan-2-one:D-ribose-5-phosphate aldehydetransferase [wrong substrate name]
Systematic name: 3-hydroxybutan-2-one:D-ribose-5-phosphate aldehydetransferase
Comments: A thiamine-diphosphate protein.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, CAS registry number: 87843-76-3
1.  Yokota, A. and Sasajima, K. Enzymatic formation of a new monosaccharide, 1-deoxy-D-altro-heptulose phosphate, from DL-acetoin and D-ribose 5-phosphate by a transketolase mutant of Bacillus pumilus. Agric. Biol. Chem. 47 (1983) 1545–1553.
[EC created 1989]

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