>4kzvA (A:) observed residues (from ATOM records)
acplkwfhfqsscylfspdtmswraslkncssmgahlvvintqeeqeflyytkprkkefy
igltdqvtegqwqwvdgtpftkslsfwdagepnnlvtvedcatirdssnprqnwndvpcf
fnmfrvcempe