homobiotin

[hō′mə-bīə-tĭn]

n.

A homologue of biotin that acts as an active antagonist of biotin for some bacteria and as a replacement for biotin in certain functions for other organisms.

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