|PROSITE documentation PDOC00833|
Ribulose-phosphate 3-epimerase (EC 126.96.36.199) (also known as pentose-5-phosphate 3-epimerase or PPE) is the enzyme that converts D-ribulose 5-phosphate into D-xylulose 5-phosphate in Calvin's reductive pentose phosphate cycle. In Alcaligenes eutrophus two copies of the gene coding for PPE are known , one is chromosomally encoded (cbbEC), the other one is on a plasmid (cbbeP). PPE has been found in a wide range of organisms from all kingdoms of life. The sequence of PPE is highly related to:
All these proteins have from 209 to 241 amino acid residues.
As signature patterns, we selected two conserved regions which are located in respectively in the N-terminal and in the central part of these proteins.Last update:
December 2008 / Text revised.
PROSITE methods (with tools and information) covered by this documentation:
|1||Authors||Kusian B., Yoo J.G., Bednarski R., Bowien B.|
|Title||The Calvin cycle enzyme pentose-5-phosphate 3-epimerase is encoded within the cfx operons of the chemoautotroph Alcaligenes eutrophus.|
|Source||J. Bacteriol. 174:7337-7344(1992).|