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The presence of a dna binding complex correlates with e b class ii mhc gene expression


, : The presence of a dna binding complex correlates with e b class ii mhc gene expression. EMBO (European Molecular Biology Organization) Journal 9(5): 1543-1550

The class II major histocompatibility complex (MHC, Ia) antigens are a family of membrane proteins whose expression is strictly regulated. They have a limited tissue distribution and their expression is regulated both developmentally and in response to external stimuli. Here we report the identification of a DNA binding protein complex (termed complex A) within the murine E.beta. MHC gene, which is restricted to cells that express Ia antigens. Complex A binding activity is developmentally regulated in cells of the B lineage in accordance with class II expression and is responsive to two different Ia-inducing lymphokines interferon-.gamma. in macrophages and interleukin-4 in pre-B cells. The DNA target sequence in complex A includes three previously defined transcriptional motifs W, X and Y, and acts as a cis-acting transcription element. Complex A is present both in cells that are constitutive for class II MHC expression and in cells that have been induced for class II MHC expression. These results suggest that complex A may play a critical role in the regulation of class II MHC gene expression.

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Finn, P.W.; Kara, C.J.; Van, T.T.; Douhan, J.; Boothby, M.R.; Glimcher, L.H., 1990: The presence of a DNA binding complex correlates with E beta class II MHC gene expression. The class II major histocompatibility complex (MHC, Ia) antigens are a family of membrane proteins whose expression is strictly regulated. They have a limited tissue distribution and their expression is regulated both developmentally and in respon...

Finn P.W.; Kara C.J.; Van T.T.; Douhan J.IIi; Boothby M.R.; Accolla R.; Glimcher L.H., 1990: A dna binding complex correlates with class ii mhc gene expression. FASEB Journal 4(7): A2013

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