The leukocyte integrins play a critical role in a number of cellular adhesive interactions during the immune response. We describe here the isolation and characterization of the chicken beta 2 (CD18) subunit, common to the leukocyte integrin family. The deduced 748-amino-acid sequence reveals a transmembrane protein with 65% and 64% identity with its human and murine homologues, respectively. The chicken beta 2 can associate on the cell surface with the human alpha subunit of LFA-1 and yields a hybrid molecule capable of binding to purified ICAM-1 and ICAM-3.
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Washington State Univ, Coll Vet Med, Dept Vet Microbiol & Pathol, Pullman, WA 99164 USAWashington State Univ, Coll Vet Med, Dept Vet Microbiol & Pathol, Pullman, WA 99164 USA
Liu, WG
Brayton, KA
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Washington State Univ, Coll Vet Med, Dept Vet Microbiol & Pathol, Pullman, WA 99164 USAWashington State Univ, Coll Vet Med, Dept Vet Microbiol & Pathol, Pullman, WA 99164 USA
Brayton, KA
Lagerquist, J
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Washington State Univ, Coll Vet Med, Dept Vet Microbiol & Pathol, Pullman, WA 99164 USAWashington State Univ, Coll Vet Med, Dept Vet Microbiol & Pathol, Pullman, WA 99164 USA
Lagerquist, J
Foreyt, WJ
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Washington State Univ, Coll Vet Med, Dept Vet Microbiol & Pathol, Pullman, WA 99164 USAWashington State Univ, Coll Vet Med, Dept Vet Microbiol & Pathol, Pullman, WA 99164 USA
Foreyt, WJ
Srikumaran, S
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Washington State Univ, Coll Vet Med, Dept Vet Microbiol & Pathol, Pullman, WA 99164 USAWashington State Univ, Coll Vet Med, Dept Vet Microbiol & Pathol, Pullman, WA 99164 USA