Chains and heterogens:
PDB Chain Sequences:
>1thw_ (-) atfeivnrcsytvwaaaskgdaaldaggrqlnsgeswtinvepgtkggkiwartdcyfdd sgsgicktgdcggllrckrfgrppttlaefslnqygkdyidisnikgfnvpmdfspttrg crgvrcaadivgqcpaklkapgggcndactvfqtseyccttgkcgpteysrffkrlcpda fsyvldkpttvtcpgssnyrvtfcpta