>2ik4A (A:) observed residues (from ATOM records)
tyttrqigakntleykvyiekdgkpvsafhdiplyadkennifnmvveiprwtnakleit
keetlnpiiqdtkkgklrfvrncfphhgyihnygafpqtwedpvgdnepidvleigetia
ytgqvkqvkalgimalldegetdwkviaidindplapklndiedvekyfpgllratnewf
riykipdgkpenqfafsgeaknkkyaldiikethdswkqliagkssdskgidltnvtlpd
tptyskaasdaippaslkadapidksidkwffi