Chains and heterogens:
PDB Chain Sequences:
>2trt_ (-) arlnresvidaalellnetgidglttrklaqklgieqptlywhvknkralldalaveila rhhdyslpaageswqsflrnnamsfrrallryrdgakvhlgtrpdekqydtvetqlrfmt engfslrdglyaisavshftlgavleqqehtaaltdrpaapdenlppllrealqimdsdd geqaflhgleslirgfevqltallqiv
>2trt_ (-) arlnresvidaalellnetgidglttrklaqklgieqptlywhvknkralldalaveila rhhdyslpaageswqsflrnnamsfrrallryrdgakvhlgtrpdekqydtvetqlrfmt engfslrdglyaisavshftlgavleqqehtaalnlppllrealqimdsddgeqaflhgl eslirgfevqltallqiv