>4ld0B (B:) observed residues (from ATOM records)
hmvvagidpgithlglgvvavlkarllhgevvktspqepakervgriharvlevlhrfrp
eavavqeqffyrqnelaykvgwalgavlvaafeagvpvyaygpmqvkqalaakeevalmv
rgilglkeaprpshladalaialthafyarmgtakpl