Chains and heterogens:
PDB Chain Sequences:
>1lxzA (A:) atfeivnrcsytvwaaaskgdaaldaggrqlnsgeswtinvepgtnggkiwartdcyfdd sgsgicktgdcggllrckrfgrppttlaefslnqygkdyidisnikgfnvpmnfspttrg crgvrcaadivgqcpaklkapgggcndactvfqtseyccttgkcgpteysrffkrlcpda fsyvldkpttvtcpgssnyrvtfcpta