Beschreibung:
<jats:p>The amino acid sequence of the A chain of the eye lens protein α‐srystallin from the red kangaroo (<jats:italic>Macropus rufus</jats:italic>) was completely determined by manual Edman degradation of tryptic, thermolytic and cyanogen bromide peptides. The sequence of the α‐crystallin A chain from the Virginia opossum (<jats:italic>Didelphis marsupialis</jats:italic>) was deduced from amino acid analyses and partial Edman degradation of peptides. The 173‐residue A chains of kangaroo and opossum differ in six positions, whereas comparison with the bovine α‐crystallin A chain reveals 17 and 22 substitutions, respectively. Most substitutions occur in the COOH‐terminal part of the chain.</jats:p>