Chains and heterogens:
PDB Chain Sequences:
>1udg_ (-) ldwttfrrvfliddawrplmepelanpltahllaeynrrcqteevlppredvfswtryct pdevrvviigqdpyhhpgqahglafsvranvppppslrnvlaavkncypearmsghgcle kwardgvlllnttltvkrgaaashsrigwdrfvggvirrlaarrpglvfmlwgthaqnai rpdprvhcvlkfshpsplskvpfgtcqhflvanryletrsispidwsv