>1b6bB (B:) observed residues (from ATOM records)
nefrcltpedaagvfeiereafdevqhfltlcpelslgwfvegrlvafiigslwdeerlt
qeslalhrprghsahlhalavhrsfrqqgkgsvllwrylhhvgaqpavrravlmcedalv
pfyqrfgfhpagpcaivvgsltftemhcslrghaal