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. 1987 Dec;84(24):9155-9.
doi: 10.1073/pnas.84.24.9155.

Structure and expression of the human and mouse T4 genes

P J Maddon  1 , S M Molineaux, D E Maddon, K A Zimmerman, M Godfrey, F W Alt, L Chess, R Axel
Affiliations

Structure and expression of the human and mouse T4 genes

P J Maddon et al. Proc Natl Acad Sci U S A. 1987 Dec.

Abstract

The T4 molecule may serve as a T-cell receptor recognizing molecules on the surface of specific target cells and also serves as the receptor for the human immunodeficiency virus. To define the mechanisms of interaction of T4 with the surface of antigen-presenting cells as well as with human immunodeficiency virus, we have further analyzed the sequence, structure, and expression of the human and mouse T4 genes. T4 consists of an extracellular segment comprised of a leader sequence followed by four tandem variable-joining (VJ)-like domains, a transmembrane domain, and a cytoplasmic segment. The structural domains of the T4 protein deduced from amino acid sequence are precisely reflected in the intron-exon organization of the gene. Analysis of the expression of the T4 gene indicates that T4 RNA is expressed not only in T lymphocytes, but in B cells, macrophages, and granulocytes. T4 is also expressed in a developmentally regulated manner in specific regions of the brain. It is, therefore, possible that T4 plays a more general role in mediating cell recognition events that are not restricted to the cellular immune response.

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