>1a6zA (A:) observed residues (from ATOM records)
rshslhylfmgaseqdlglslfealgyvddqlfvfydhesrrveprtpwvssrissqmwl
qlsqslkgwdhmftvdfwtimenhnhskeshtlqvilgcemqednstegywkygydgqdh
lefcpdtldwraaeprawptklewerhkirarqnraylerdcpaqlqqllelgrgvldqq
vpplvkvthhvtssvttlrcralnyypqnitmkwlkdkqpmdakefepkdvlpngdgtyq
gwitlavppgeeqrytcqvehpgldqpliviw