>2z3nB (B:) observed residues (from ATOM records)
rlvqlsrhsiafpspegalrepngllalggdlsparllmayqrgifpwfspgdpilwwsp
dpravlwpeslhisrsmkrfhkrspyrvtmnyafgqviegcasdregtwitrgvveayhr
lhelghahsievwredelvggmygvaqgtlfcgesmfsrmenasktallvfceefighgg
klidcqvlndhtaslgaceiprrdylnylnqmrlgrlpnnfwvprclfsp