Chains and heterogens:
PDB Chain Sequences:
>5lduA (A:) avgpvadltitdaavspdgfsrqavvvngvtpgplvagnigdrfqlnvidnltnhtmlks tsihwhgffqhgtnwadgpafinqcpispghsflydfqvpdqagtfwyhshlstqycdgl rgpfvvydpndphasrydvdnddtvitladwyhtaaklgprfplgadatlingkgrapsd ttaelsvikvtkgkryrfrlvslscdpnhtfsidghnltiievdsvnsqplevdsiqifa aqrysfvldanqavdnywiranpnfgnvgfdgginsailrydgapavepttnqttsvkpl nevdlhplvstpvpgspssggvdkainmafnfngsnffingasfvpptvpvllqilsgaq taqdllpsgsvyvlpsnasieisfpataaapgaphpfhlhghtfavvrsagstvynydnp ifrdvvstgtpaagdnvtirfdtnnpgpwflhchidfhleggfavvmaedtpdvkavnpv pqawsdlcptydaldpndq