>2y4zA (A:) observed residues (from ATOM records)
plrlggngqwqywpfsssdlynwknnnpsfsedpgkltaliesvltthqptwddcqqllg
tlltgeekqrvllearkavrgndgrptqlpnevdaafplerpdwdyttqrgrnhlvlyrq
lllaglqnagrsleh