>2q39B (B:) observed residues (from ATOM records)
qtmkgldiqkvagtwyslamaasdislldaqsaplrvyveelkptpegdleillqkwend
ecaqkkiiaektkipavfkidalnenkvlvldtdykkyllfcmensaepeqslvcqclvr
tpevddealekfdkalkalpmhirlsfnptq