The Pathway Ontology (PW), is currently being developed at the Rat Genome Database. For more information about this vocabulary, please see Petri et al. The rat genome database pathway portal. Database (Oxford). 2011 Apr 8;2011:bar010. Print 2011 or contact us (http://rgd.mcw.edu/contact/index.shtml).
The non-oxidative (circular) phase of the pentose phosphate pathway involves conversion of ribulose-5-phosphate to ribose-5-phosphate, important in the synthesis of nucleotides and nucleic acids, or of 3 or 6 carbon sugars.