>4dxaA (A:) observed residues (from ATOM records)
smreyklvvlgsvgvgksaltvqfvqgifvekydptiedsyrkqvevdaqqcmleildta
gteqftamrdlymkngqgfalvysitaqstfndlqdlreqilrvkdtddvpmilvgnkcd
ledervvgkeqgqnlarqwnncaflessakskinvneifydlvrqinr