Elastases form a subfamily of serine proteases that hydrolyze many proteins in addition toelastin. Humans have six elastase genes which encode the structurally similar proteins elastase 1, 2, 2A, 2B, 3A, and 3B. Like most of the human elastases, elastase 2B is secreted from the pancreas as a zymogen. In other species, elastase 2B has been shown to preferentially cleave proteins after leucine, methionine, and phenylalanine residues.[5]
^"Human PubMed Reference:".National Center for Biotechnology Information, U.S. National Library of Medicine.
^Kawashima I, Tani T, Shimoda K, Takiguchi Y (April 1987). "Characterization of pancreatic elastase II cDNAs: two elastase II mRNAs are expressed in human pancreas".DNA.6 (2):163–72.doi:10.1089/dna.1987.6.163.PMID3646943.
Fletcher TS, Shen WF, Largman C (1987). "Primary structure of human pancreatic elastase 2 determined by sequence analysis of the cloned mRNA".Biochemistry.26 (23):7256–61.doi:10.1021/bi00397a010.PMID3427074.
