CP CAPZA F-actin capping protein is a heterodimer Authored: Akkerman, JW, 2010-10-29 Edited: Jupe, S, 2010-11-16 F-actin-capping protein binds in a Ca2+-independent manner to the fast growing ends of actin filaments (barbed end) thereby blocking the exchange of subunits. Unlike other capping proteins (such as gelsolin and severin), they do not sever actin filaments. Pubmed9331217 Reactome Database ID Release 43879459 Reactome, http://www.reactome.org ReactomeREACT_25363 Reviewed: Ouwehand, WH, 2010-11-12