>2gtrB (B:) observed residues (from ATOM records) yrdivvrkqdgfthillstkssennslnpevmrevqsalstaaaddsklvllsavgsvfc cgldfiyfirrltddrkrestkmaeairnfvntfiqfkkpiivavngpaiglgasilplc dvvwanekawfqtpyttfgqspdgcstvmfpkimggasanemllsgrkltaqeacgkglv sqvfwpgtftqevmvrikelascnpvvleeskalvrcnmkmeleqanerecevlkkiwgs aqgmdsmlkylqrkidef