>4rncC (C:) observed residues (from ATOM records)
msireavsvdgtsivyrvtgnsagtplvllhgwaqssqcwgeqvladlaadyrliavdlr
ghgysdapesgyddsanwagdvaavlaaegvtenaillgwsygglvicdylaahgtgava
gavlvgaitsigrgekggkvgsamrsavpgamsedpreairalgafgnaltgppegkgaa
sqalfgyslstrprvraalfnravghdellrnldipvlvlhgtddsvvdvsagkhaeeli
pksqasywvgcnhgpfvedptrfvsevrtfisslg