>1t39A (A:) observed residues (from ATOM records) cemkrttldsplgklelsgceqglheikllgpeplmqctawlnayfhqpeaieefpvpal hhpvfqqesftrqvlwkllkvvkfgevisyqqlaalagnpkaaravggamrgnpvpilip chrvvcssgavgnysgglavkewllaheghr