>4fpxB (B:) observed residues (from ATOM records)
mklksfgvfgnpikhsksplihnacfltfqkelrflghyhpillpleshikseflhlgls
ganvtlpfkerafqvcdkikgialecgavntlvlendelvgyntdalgfylslkyqnali
lgaggsakalacelkkqglqvsvlnrsldffqrlgcdcfmeppksafdliinatsaslhn
elplnkevlkgyfkegklaydlaygfltpflslakelktpfqdgkdmliynaalsfekfs
asqipyskafevmrsvf