the poly ( a ) appears to be located at or near the 3 ' end of the 30 to 40s rna because : ( i ) it contained one adenosine per 180 amp residues , and because ( ii ) incubation of 30 to 40s rna with bacterial rnase h in the presence of poly ( dt ) removed its poly ( a ) without significantly affecting its hydrodynamic or electrophoretic properties in denaturing solvents .
C0035668
rna
C0035692
rna