>2z3nA (A:) observed residues (from ATOM records)
rlvqlsrhsiafpspegalrepngllalggdlsparllmayqrgifpwfspgdpilwwsp
dpravlwpeslhisrsmkrfhkrspyrvtmnyafgqviegcasdregtwitrgvveayhr
lhelghahsievwredelvggmygvaqgtlfcgesmfsrmenasktallvfceefighgg
klidcqvlndhtaslgaceiprrdylnylnqmrlgrlpnnfwvprclfsp