>2z3kA (A:) observed residues (from ATOM records)
rlvqlsrhsiafpspegalrepngllalggdlsparllmayqrgifpwfspgdpilwwsp
dpravlwpeslhisrsmkrfhkrspyrvtmnyafgqviegcasdreegtwitrgvveayh
rlhelghahsievwredelvggmygvaqgtlfcgesmfsrmenasktallvfceefighg
gklidcqvlndhtaslgaceiprrdylnylnqmrlgrlpnnfwvprclfsp