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