IUBMB Enzyme Nomenclature


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 click here.

Glossary: thiamine diphosphate

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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