>4pt6A (A:) observed residues (from ATOM records)
scsmplgmeskaisdaqitassyacrgdtcwspskarlhlqgrsnawrpqvnnkewlqvd
fqktmkvtgvttqgvksaatsmyvkeflisssqdghqwtlffqngkvkvfqgnqdsftpv
vnsldpplltrylrihpqswvhqialrmevlgce