pyridoxal 5-phosphate

n.

The phosphate form of pyridoxal that is a coenzyme belonging to the vitamin B6 group and is essential to many reactions in tissue, such as amino acid decarboxylations.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.