>3vl4A (A:) observed residues (from ATOM records)
ssyqiavlagdgigpevmaearkvlkavearfglnieyteydvggiaidnhgcplpeatl
kgceaadailfgsvggpkweklppneqpergallplrghfelfcnlrpaklhdglehmsp
lrsdisargfdvlcvreltggiyfgkpkgrqgegeseeafdtmrysrreisriariafea
argrrkkvtsvdkanvlacsvlwrqvveevavdfpdvelehiyidnatmqllrrpdefdv
mlcsnlfgdilsdeiamltgsmgllssasmnstgfglfepaggsapdiagkgianpiaqi
lsaalmlrhslkqeeaasaieravtkalnsgyltgellssdqrhkakttvqmgdfiadav
kagv