Comparative sequence analysis of cDNA clones encoding I-A molecules of the CH12 B cell lymphoma: nucleotide differences do not account for their "defective" function in B cell stimulation

New class II-like genes in the murine MHC

Major histocompatibility complex (MHC) class I molecules present endogenous antigens to CD8+ (cytotoxic) T cells. MHC class II molecules present primarily exogenously derived antigens to CD4+ T cells. Three new genes (Ma, Mb1 and Mb2) located between the Pb and Ob genes of the murine MHC have properties indicating that they are members of the MHC class II gene family, but they are the most divergent class II members so far identified and are almost as closely related in sequence to class I genes as they are to the known class II genes.

Complete coding region sequence of E beta k cDNA clones: lack of polymorphism in the NH2-terminus between E beta k and E beta b molecules

Sequence analysis of two independently isolated E beta k cDNA clones revealed that the E beta k molecule is identical to the E beta b molecule at the NH2-terminus. These data resolve a discrepancy between previously published amino acid and nucleotide sequences and indicate that the E beta NH2-terminus is not as polymorphic as was once believed.