Chains and heterogens:
PDB Chain Sequences:
>1mizB (B:) sdqnvdsrdpvqlnllyvqarddilngshpvsfdkacefagyqcqiqfgphneqkhkpgf lelkdflpkeyikqkgerkifmahkncgnmseieakvryvklarslktygvsfflvkekm kgknklvprllgitkecvmrvdektkeviqewsltnikrwaaspksftldfgdyqdgyys vqttegeqiaqliagyidiil