>3sl4B (B:) observed residues (from ATOM records)
qedvlakeledvnkwglhvfriaelsgnrpltvimhtifqerdllktfkipvdtlitylm
tledhyhadvayhnnihaadvvqsthvllstpaleavftdleilaaifasaihdvdhpgv
snqflintnselalmyndssvlenhhlavgfkllqeencdifqnltkkqrqslrkmvidi
vlatdmskhmnlladlktmvetkkvtssgvllldnysdriqvlqnmvhcadlsnptkplq
lyrqwtdrimeeffrqgdrerergmeispmcdkhnasveksqvgfidyivhplwetwadl
vhpdaqdildtlednrewyqstipq