>2bl1A (A:) observed residues (from ATOM records)
asirdagvadlpgilaiyndavgnttaiwnetpvdlanrqawfdararqgypilvasdaa
gevlgyasygdwrpfegfrgtvehsvyvrddqrgkglgvqllqalieraraqglhvmvaa
iesgnaasiglhrrlgfeisgqmpqvgqkfgrwldltfmqlnldptrsap