Chains and heterogens:
PDB Chain Sequences:
>2matA (A:) aisiktpediekmrvagrlaaevlemiepyvkpgvstgeldricndyivneqhavsaclg yhgypksvcisinevvchgipddakllkdgdivnidvtvikdgfhgdtskmfivgkptim gerlcritqeslylalrmvkpginlreigaaiqkfveaegfsvvreycghgigqgfheep qvlhydsretnvvlkpgmtftiepmvnagkkeirtmkdgwtvktkdrslsaqyehtivvt dngceiltlrkddtipaiishd