determination of the protein subunits recovered by either glycine-hcl , ph 2.8 , or 2.5 m mgcl2 elution on gradient sodium dodecyl sulfate-polyacrylamide electrophoresis containing mercaptoethanol revealed that rnp was composed of five proteins with mol . wts from 10,000 to 15,000 whereas sm contained the same or similar five chains plus six additional subunits with mol . wts from 21,000 to 42,000 .
C0599220
protein subunits
C0033684
proteins