Chains and heterogens:
PDB Chain Sequences:
>5ukdA (A:) mekskpnvvfvlggpgsgkgtqcanivrdfgwvhlsagdllrqeqqsgskdgemiatmik ngeivpsivtvkllknaidanqgknflvdgfprneennnsweenmkdfvdtkfvlffdcp eevmtqrllkrgessgrsddniesikkrfntfnvqtklvidhynkfdkvkiipanrdvne vyndvenlfksmgf