>3kvsB (B:) observed residues (from ATOM records)
ldafakvvaqadargeflsntqldalskmvsegnkrldvvnritsnasaivtnaaralfs
eqpqliqpggnaytnrrmaaclrdmeiilryvsyaiiagdssvlddrclnglretyqalg
vpgasvavgvekmkdsaiaiandpsgittgdcsalmaevgtyfdraatav