Chains and heterogens:
PDB Chain Sequences:
>1a6i_ (-) srldkskvinsalellnevgieglttrklaqklgveqptlywhvknkralldalaveila rhhdyslpaageswqsflrnnamsfrrallryrdgakvhlgtrpdekqydtvetqlrfmt engfslrdglyaisavshftlgavleqqehtaaltdrpaapdenlppllrealqimdsdd geqaflhgleslirgfevqltallqivggdkliipfc
>1a6i_ (-) srldkskvinsalellnevgieglttrklaqklgveqptlywhvknkralldalaveila rhhdyslpaageswqsflrnnamsfrrallryrdgakvhlgtrpdekqydtvetqlrfmt engfslrdglyaisavshftlgavleqqehlppllrealqimdsddgeqaflhgleslir gfevqltallqiv