>2ckqA (A:) observed residues (from ATOM records)
prtrrraylwckeflpgawrglredefhisvirgglsnmlfqcslpdttatlgdeprkvl
lrlygamvlesvmfailaerslgpklygifpqgrleqfipsrrldteelslpdisaeiae
kmatfhgmkmpfnkepkwlfgtmekylkevlrikfteesrikklhkllsynlplelenlr
sllestpspvvfchndcqegnilllegrenskqklmlidfeyssynyrgfdignhfcewm
ydysyekypffranirkyptkkqqlhfissylpafqndfenlsteeksiikeemllevnr
falashflwglwsivqakissiefgymdyaqarfdayfhqkrklgv