>4a3yB (B:) observed residues (from ATOM records)
datrisrsdfpadfimgtgssayqieggardggrgpsiwdtfthrrpdmirggtngdvav
dsyhlykedvnilknlgldayrfsiswsrvlpggrlsggvnkeginyynnlidgllangi
kpfvtlfhwdvpqaledeyggflsprivddfceyaelcfwefgdrvkhwmtlnepwtfsv
hgyatglyapgrgrtgnpgtepywvthhlllahaaavelyknkfqrgqegqigishatqw
mepwdensasdveaaaraldfmlgwfmepitsgdypksmkkfvgsrlpkfspeqskmlkg
sydfvglnyytasyvtnanfsyntdihvtyetdrngvpigpqsgsdwlliypegirkilv
ytkktynvpliyvtengvddvkntnltlsearkdsmrlkylqdhifnvrqamndgvnvkg
yfawslldnfewgegygvrfgiihidyndnfarypkdsavwlmnsfhk