initiation factor

Medical Dictionary

initiation factor n.
Abbr. IF
Any of several soluble proteins involved in the initiation of protein synthesis and released from the ribosome as it progresses into chain elongation.

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