>3caaA (A:) observed residues (from ATOM records)
asanvdfafslykqlvlkapdknvifsplsistalaflslgahnttlteilkglkfnlte
tseaeihqsfqhllrtlnqssdelqlsmgnamfvkeqlslldrftedakrlygseafatd
fqdsaaakklindyvkngtrgkitdlikdldsqtmmvlvnyiffkakwempfdpqdthqs
rfylskkkwvmvpmmslhhltipyfrdeelsctvvelkytgnasalfilpdqdkmeevea
mllpetlkrwrdslefreigelylpkfsisrdynlndillqlgieeaftskadlsgitga
rnlavsqvvhkavldvfeegtersaatavkitll