title: Purification and characterization of the messenger RNA for the heavy chain of rat immunoglobulin E.
abstract: The isolation and translational properties of rat immunoglobulin E (IgE) heavy chain mRNA are described. The mRNA has a sedimentation coefficient of approximately 18S, a chain length of about 2000 nucleotides and directs the synthesis in vitro of a polypeptide of 65000 molecular weight in an mRNA-dependent rabbit reticulocyte lysate. Inclusion of dog pancreatic microsomes in the cell-free translation system resulted in a heavy chain product of about 75000 molecular weight, presumably as a consequence of glycosylation in vitro. This species co-migrated in an SDS polyacrylamide gel with mature IgE heavy chain. Substantial purification of heavy chain mRNA was achieved by denaturing sucrose gradient centrifugation and agarose gel electrophoresis.
mesh_terms: D000818:Animals; D002460:Cell Line; D007073:Immunoglobulin E / Q000235:genetics*; D007143:Immunoglobulin Heavy Chains / Q000235:genetics*; D051379:Mice; D008970:Molecular Weight; D009374:Neoplasms, Experimental / Q000276:immunology; D010954:Plasmacytoma / Q000276:immunology*; D011061:Poly A / Q000235:genetics; D014176:Protein Biosynthesis; D012313:RNA / Q000235:genetics; D012333:RNA, Messenger / Q000235:genetics / Q000302:isolation & purification*
chemical_list: D007143:Immunoglobulin Heavy Chains; D012333:RNA, Messenger; D011061:Poly A; D007073:Immunoglobulin E; D012313:RNA