In platelets, much of this protein is found attached to a peptide named Fx, which was found to be identical to thymosin beta-4.
In platelets, much of this protein is found attached to a peptide named Fx, which was found to be identical to thymosin beta-4. Branching of this protein is stimulated by WASp proteins; the branch points are occupied by a protein typically isolated due to its ability to bind profilin. CapZ is responsible for calcium-independent capping of the plus end of one form of this protein. A toxin from the so-called "angel of death" mushroom, phalloidin, works by preventing this protein's filamentous F form from being depolymerized into G monomers. Microfilaments are made up of this protein, which is absent in the H zone of a sarcomere. For 10 points, name this protein that slides alongside myosin to produce muscle contractions.
In platelets, much of this protein is found attached to a peptide named Fx, which was found to be identical to thymosin beta-4.
actin