Chains and heterogens:
PDB Chain Sequences:
>1ky7A (A:) gspgirlgssednfarfvcknngvlfenqllqiglksefrqnlgrmfifygnktstqfln ftptlicaddlqtnlnlqtkpvdptvdggaqvqqvvniecisdfteapvlniqfryggtf qnvsvklpitlnkffqptemasqdffqrwkqlsnpqqevqnifkakhpmdteitkakiig fgsalleevdpnpanfvgagiihtkttqigcllrlepnlqaqmyrltlrtskdtvsqrlc ellseqf