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