>4lc3A (A:) observed residues (from ATOM records)
apflpftrpeideetiqgvvevlrsgwittgpqcqkfeaalseycggrpvrvfnsgtctl
eiglriagvgpgdevittpaswvstsnviietgatpvfadidpvtrnidldkleqaitpr
tkaiipvflsglpvdmdrlyaiarahklrviedaaqafgstwhgkrigaigdlvsfsfha
nknlttieggalvlnnedeavlaqkyrlqgitrtgfdgmdcdvlggkynltdvaarvglg
qlphlerftaqrralarayfaafdggaaaklgvglpvaefengnwhmflvtlplerltit
raefmaqmkergigtgihypaihlftlyrargfkegmfphaerygastvtlplftqmteg
dvrrvvdavnqiceqygk