>1sq4A (A:) observed residues (from ATOM records)
kssyyaphgghpalltdramfteayavipkgvmrdivtshlpfwdnmrmwviarplsgfa
etfsqyivelapnggsdkpeqdpnaeavlfvvegelsltlqgqvhamqpggyafippgad
ykvrnttgqhtrfhwirkhyqkvdgvplpeafvtneqdiqplvmpdtegrwsttrfvdms
dmrhdmhvnivnfepggvipfaethvmehglyvlegkavyrlnqdwveveagdfmwlraf
cpqacysggpgrfryllykdvnrhmrltln