Chains and heterogens:
PDB Chain Sequences:
>1a8qA (A:) picttrdgveifykdwgqgrpvvfihgwplngdawqdqlkavvdagyrgiahdrrghghs tpvwdgydfdtfaddlndlltdldlrdvtlvahsmgggelaryvgrhgtgrlrsavllsa ippvmiksdknpdgvpdevfdalkngvltersqfwkdtaegffsanrpgnkvtqgnkdaf wymamaqtieggvrcvdafgytdftedlkkfdiptlvvhgdddqvvpidatgrksaqiip naelkvyegsshgiamvpgdkekfnrdlleflnk