>3fxkA (A:) observed residues (from ATOM records)
gafldkpkmekhnaqgqgnglryglssmqgwrvemedahtaviglpsgleswsffavydg
hagsqvakyccehlldhitnnqdfkgsagapsvenvkngirtgfleidehmrvmsekkhg
adrsgstavgvlispqhtyfincgdsrgllcrnrkvhfftqdhkpsnplekeriqnaggs
vmiqrvngslavsralgdfdykcvhgkgpteqlvspepevhdierseeddqfiilacdgi
wdvmgneelcdfvrsrlevtddlekvcnevvdtclykgsrdnmsvilicfpnapkvspea
vkkeaeldkylecrveeiikgvpdlvhvmrtlasenipslppggelaskrnvieavynrl
npy