>3p99A (A:) observed residues (from ATOM records)
gklppvypvtvpilghiiqfgksplgfmqeckrqlksgiftinivgkrvtivgdphehsr
fflprnevlsprevysfmvpvfgegvayaapyprmreqlnflaeeltiakfqnfvpaiqh
evrkfmaanwdkdegeinlledcstmiintacqclfgedlrkrldarrfaqllakmessl
ipaavflpillklplpqsarcheartelqkilseiiiarkeeevnkdsstsdllsgllsa
vyrdgtpmslhevcgmivaamfagqhtssitttwsmlhlmhpanvkhlealrkeieefpa
qlnynnvmdempfaercaresirrdppllmlmrkvmadvkvgsyvvpkgdiiacspllsh
hdeeafpeprrwdperdekvegafigfgagvhkcigqkfgllqvktilatafrsydfqll
rdevpdpdyhtmvvgptasqcrvkyirr