title: Structure and expression of germ line immunoglobulin gamma 2b transcripts.
abstract: We have isolated a cDNA copy of a truncated C gamma 2b transcript produced by Abelson murine leukemia virus transformants that spontaneously switch from mu to gamma 2b. The initiation site of this transcript was 2 kilobases 5' to the gamma 2b switch recombination region, demonstrating its germ line origin. Nucleotide sequence analyses suggest that this transcript does not encode a protein. Expression of germ line gamma 2b transcripts in Abelson murine leukemia virus transformants and in normal spleen cells correlated with endogenous gamma 2b class switch activity.
mesh_terms: D000011:Abelson murine leukemia virus / Q000235:genetics; D000818:Animals; D001402:B-Lymphocytes; D001483:Base Sequence; D002461:Cell Line, Transformed; D005803:Genes, Immunoglobulin; D007143:Immunoglobulin Heavy Chains / Q000235:genetics*; D007142:Immunoglobulin gamma-Chains / Q000235:genetics*; D007148:Immunoglobulin mu-Chains / Q000235:genetics; D008969:Molecular Sequence Data; D014158:Transcription, Genetic
chemical_list: D007143:Immunoglobulin Heavy Chains; D007142:Immunoglobulin gamma-Chains; D007148:Immunoglobulin mu-Chains