>4u2nB (B:) SEQRES residues
gplgsdfpqhsqhvleqlnqqrqlgllcdctfvvdgvhfkahkavlaacseyfkmlfvdq
kdvvhldisnaaglgqvlefmytaklslspenvddvlavatflqmqdiitachalkslar
sgggssggsgtaqtlqmeipnfgnsileclneqrlqglycdvsvvvkghafkahravlaa
sssyfrdlfnnsrsavvelpaavqpqsfqqilsfcytgrlsmnvgdqdllmytagflqiq
eimekgtefflkvss