>1rfzB (B:) observed residues (from ATOM records)
snamsefimnnleqtarrwleergvtvekiaelvyylqskyhpdltmeecienvnrvisk
revqnailtgiqldklaedgrldeplqsiirrdeglygvdeilalsivnvygsigftnyg
yidkqkpgilqylndkstgkcntflddivgaiaaaassrlahra