Chains and heterogens:
PDB Chain Sequences:
>1thv_ (-) atfeivnrcsytvwaaaskgdaaldaggrqlnsgeswtinvepgtnggkiwartdcyfdd sgsgicktgdcggllrckrfgrppttlaefslnqygkdyidisnikgfnvpmdfspttrg crgvrcaadivgqcpaklkapgggcndactvfqtseyccttgkcgpteysrffkrlcpda fsyvldkpttvtcpgssnyrvtfcpta