1 : any of various composite plants (genus Chrysanthemum) including weeds, ornamentals grown for their brightly colored often double flower heads, and others important as sources of medicinals and insecticides. 2 : a flower head of an ornamental chrysanthemum.
Elastin is a highly elastic protein in connective tissue and allows many tissues in the body to resume their shape after stretching or contracting. Elastin helps skin to return to its original position when it is poked or pinched.
Porcine pancreatic elastase is composed of a single peptide chain of 240 amino acids, and contains 4 disulfide bridges (Sawyer et al. 1973). It has a high degree of sequence identity with pancreatic elastases from other species, such as rat with whom it shares 86% identity (MacDonald et al. 1982).n adsorption complex between elastase and its substrate is formed, followed by nucleophilic attack (S214) to form an acyl-enzyme intermediate, and release of the first product (the C-terminal end of the substrate).