>3a51A (A:) observed residues (from ATOM records)
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rlskdwrhrlpedqradmpatptpmmilmdppdhtrlrklvgrsftvrrmnelepritei
adgllaglptdgpvdlmreyafqipvqvicellglpaedrddfsawssvlvddspaddkn
aamgklhgylsdllerkrtepddallssllavsdmdgdrlsqeelvamamllliaghett
vnligngvlallthpdqrkllaedpslissaveeflrfdspvsqapirftaedvtysgvt
ipagemvmlglaaanrdadwmpepdrlditrdasggvffghgihfclgaqlarlegrvai
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