>1us4A (A:) observed residues (from ATOM records)
aqefitigsgsttgvyfpvatgiaklvndanvgiranarstggsvaninainagefemal
aqndiayyayqgccipafegkpvktiralaalypevvhvvarkdagirtvadlkgkrvvv
gdvgsgteqnarqileaygltfddlgqairvsasqgiqlmqdkradalfytvglgasaiq
qlalttpialvavdlnriqaiakkypfyvgfnipggtykgvdvttptvavqamliaserl
seetvykfmkavfgnleafkkihpnlerffglekavkglpiplhpgaerfykeagvlk