>2xptA (A:) observed residues (from ATOM records)
srlnresvidaalellnetgidglttrklaqklgieqptlywhvknkralldalaveila
rhhdyslpaageswqsflrnnamsfrrallryrdgakvhlgtrpdekqydtvetqlrfmt
engfslrdglyaisavshftlgavleqqehtanlppllrealqimdsddgeqaflhgles
lirgfevqltallqiv