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CLEC4A

Gene
Clec4a
Protein
C-type lectin domain family 4 member A
Organism
Rattus norvegicus
Length
240 amino acids
Function
C-type lectin receptor that binds carbohydrates mannose and fucose but also weakly interacts with N-acetylglucosamine (GlcNAc) in a Ca(2+)-dependent manner. Involved in regulating immune reactivity. Once triggered by antigen, it is internalized by clathrin-dependent endocytosis and delivers its antigenic cargo into the antigen presentation pathway resulting in cross-priming of CD8(+) T cells. This cross-presentation and cross-priming are enhanced by TLR7 and TLR8 agonists with increased expansion of the CD8(+) T cells, high production of IFNG and TNF with reduced levels of IL4, IL5 and IL13. In plasmacytoid dendritic cells, inhibits TLR9-mediated IFNA and TNF production. May be involved via its ITIM motif (immunoreceptor tyrosine-based inhibitory motifs) in the inhibition of B-cell-receptor-mediated calcium mobilization and protein tyrosine phosphorylation.
Mass
27.404 kDa
Sequence
MASEITYAEVRIKNESNSSVTYSGSPAAPREKPTRHLSKPGSLLVPFTSLMVLLLLLAITFLVAFIIYFQKYSQFLEEKKAIKGITHKELNCIKNVLLMEEKSWSCCPKNWKPFGSHCYWVTKHTSTYSKASWSESEKNCFSMGAHLLVIHSKEEQDFITGILNRDAAYFIGLWDSGHRQWQWVSQTPYNASATFWHKGEPSSDDEKCVIINHLNSGWGWNDIPCSGKQQSVCQMKKIQL

Gene
Clec4a
Protein
C-type lectin domain family 4 member A
Organism
Mus musculus
Length
238 amino acids
Function
C-type lectin receptor that binds carbohydrates mannose and fucose but also weakly interacts with N-acetylglucosamine (GlcNAc) in a Ca(2+)-dependent manner. Involved in regulating immune reactivity. Once triggered by antigen, it is internalized by clathrin-dependent endocytosis and delivers its antigenic cargo into the antigen presentation pathway resulting in cross-priming of CD8(+) T cells. This cross-presentation and cross-priming are enhanced by TLR7 and TLR8 agonists with increased expansion of the CD8(+) T cells, high production of IFNG and TNF with reduced levels of IL4, IL5 and IL13. In plasmacytoid dendritic cells, inhibits TLR9-mediated IFNA and TNF production (By similarity). May be involved via its ITIM motif (immunoreceptor tyrosine-based inhibitory motifs) in the inhibition of B-cell-receptor-mediated calcium mobilization and protein tyrosine phosphorylation (PubMed:11841542).
Mass
27.323 kDa
Sequence
MASEITYAEVKFKNESNSLHTYSESPAAPREKPIRDLRKPGSPSLLLTSLMLLLLLLAITFLVAFIIYFQKYSQLLEEKKAAKNIMHNELNCTKSVSPMEDKVWSCCPKDWRLFGSHCYLVPTVSSSASWNKSEENCSRMGAHLVVIQSQEEQDFITGILDTHAAYFIGLWDTGHRQWQWVDQTPYEESITFWHNGEPSSGNEKCATIIYRWKTGWGWNDISCSLKQKSVCQMKKINL

Gene
CLEC4A
Protein
C-type lectin domain family 4 member A
Organism
Homo sapiens
Length
237 amino acids
Function
(Microbial infection) Involved in the interaction between HIV-1 virus and dendritic cells. Enhances HIV-1 binding/entry and virus infection. Requires ITIM motif-associated signal transduction pathway involving phosphatases PTPN6 and PTPN11, SYK, Src kinases and MAP kinases.
Mass
27.512 kDa
Sequence
MTSEITYAEVRFKNEFKSSGINTASSAASKERTAPHKSNTGFPKLLCASLLIFFLLLAISFFIAFVIFFQKYSQLLEKKTTKELVHTTLECVKKNMPVEETAWSCCPKNWKSFSSNCYFISTESASWQDSEKDCARMEAHLLVINTQEEQDFIFQNLQEESAYFVGLSDPEGQRHWQWVDQTPYNESSTFWHPREPSDPNERCVVLNFRKSPKRWGWNDVNCLGPQRSVCEMMKIHL