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.
1 The most abundant cross-links in mature elastin fibers are lysinonorleucine, allysine aldol, desmosine, and isodesmosine. 2  P15502-ELN_HUMAN. 3  Hydroxylation on proline residues within the sequence motif, GXPG, is most likely 4-hydroxy as this fits the requirement for 4-hydroxylation in vertebrates.