>1a4rB (B:) SEQRES residues mqtikcvvvgdvavgktcllisyttnkfpseyvptvfdnyavtvmiggepytlglfdtag qedydrlrplsypqtdvflvcfsvvspssfenvkekwvpeithhcpktpfllvgtqidlr ddpstieklaknkqkpitpetaeklardlkavkyvecsaltqkglknvfdeailaalepp epkksrrcvll