>1sfnA (A:) observed residues (from ATOM records)
mkhlgqtrsalhgshavitpetfvrtalaewpgsaivlhiapvvglgarfvqftaempag
aqatesvyqrfafvlsgevdvavggetrtlreydyvylpagekhmltaktdarvsvfekp
yqtvegvqapgvywgnerenpgypfegddhliarkllpdepafdfmvstmsfapgaslpy
aevhymehgllmlegeglykleenyypvtagdiiwmgahcpqwygalgrnwskyllykdm
nrhpl