>1aa7B (B:) SEQRES residues mslltevetyvlsiipsgplkaeiaqrledvfagkntdlevlmewlktrpilspltkgil gfvftltvpserglqrrrfvqnalngngdpnnmdkavklyrklkreitfhgakeislsys agalascmgliynrmgavttevafglvcatceqiadsq