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The structure of the functional N-terminal domain from the extracellular region of the cell surface receptor sialoadhesin has been determined in complex with the oligosaccharide 3′ sialyllactose. This provides structural information for the siglec family of proteins. The structure conforms to the V-set immunoglobulin-like fold but contains several distinctive features, including an intra–β sheet disulphide...
Introduction: The human non classical HLA-E molecule is transcribed in most tissues and exhibits a limited polymorphism. Although no specific antibodies are available, studies of HLA-A. -B, -C, -G null mutant cell line LCL721.221 and a murine cell line X63 transfected with HLA-E and human β2 microglobulin showed that HLA-E displays a very low cell surface expressions. HLA-E shares some structural...
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