Chains and heterogens:
PDB Chain Sequences:
>3hc2A (A:) apsypeytreevgrhrspeervwvthgtdvfdvtdfvelhpggpdkillaaggalepfwa lyavhgephvlellqqykvgelspdeapaapdaqdpfagdpprhpglrvnsqkpfnaepp aellaerfltpnelfftrnhlpvpavepssyrlrvdgpgggtlslslaelrsrfpkhevt atlqcagnrrsemsrvrpvkglpwdigaistarwggarlrdvllhagfpeelqgewhvcf egldadpggapygasipygralspaadvllayemngtelprdhgfpvrvvvpgvvgarsv kwlrrvavspdespshwqqndfkgfspcvdwdtvdyrtapaiqelpvqsavtqprpgaav ppgeltvkgyawsgggrevvrvdvsldggrtwkvarlmgdkappgrawawalweltvpve agteleivckavdssynvqpdsvapiwnlrgvlstawhrvrvsvqd
>3hc2A (A:) dpfagdpprhpglrvnsqkpfnaeppaellaerfltpnelfftrnhlpvpavepssyrlr vdgpgggtlslslaelrsrfpkhevtatlqcagnrrsemsrvrpvkglpwdigaistarw ggarlrdvllhagfpeelqgewhvcfegldadpggapygasipygralspaadvllayem ngtelprdhgfpvrvvvpgvvgarsvkwlrrvavspdespshwqqndfkgfspcvdwdtv dyrtapaiqelpvqsavtqprpgaavppgeltvkgyawsgggrevvrvdvsldggrtwkv arlmgdkappgrawawalweltvpveagteleivckavdssynvqpdsvapiwnlrgvls tawhrvrvsvqd