>3t80B (B:) observed residues (from ATOM records)
amrighgfdvhafggegpiiiggvripyekgllahsdgdvalhaltdallgaaalgdigk
ladsrellreawrriqakgytlgnvdvtiiaqapkmlphipqmrvfiaedlgchmdevnv
kattteklgftgrgegiaceavallmk