Chains and heterogens:
PDB Chain Sequences:
>1c3dA (A:) mldaerlkhlivtpsgageqnmigmtptviavhyldeteqwekfglekrqgalelikkgy tqqlafrqpssafaafvkrapstwltayvvkvfslavnliaidsqvlcgavkwlilekqk pdgvfqedapvihqemigglrnnnekdmaltafvlislqeakdiceeqvnslpgsitkag dfleanymnlqrsytvaiagyalaqmgrlkgpllnkflttakdknrwedpgkqlynveat syallallqlkdfdfvppvvrwlneqryygggygstqatfmvfqalaqyqkdap