UniProt functional annotation for Q9UMR7



	UniProt functional annotation for Q9UMR7

UniProt code: Q9UMR7.

Organism: Homo sapiens (Human).

Taxonomy: Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo.

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 (PubMed:27015765). Involved in regulating immune reactivity (PubMed:18258799, PubMed:10438934). 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 (PubMed:18258799, PubMed:20530286). In plasmacytoid dendritic cells, inhibits TLR9-mediated IFNA and TNF production (PubMed:18258799). 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:10438934). {ECO:0000269|PubMed:10438934, ECO:0000269|PubMed:18258799, ECO:0000269|PubMed:20530286, ECO:0000269|PubMed:27015765}.

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. {ECO:0000269|PubMed:21536857}.

Subunit: May interact with PTPN6 via its ITIM motif.

Subcellular location: Cell membrane {ECO:0000269|PubMed:18258799}; Single-pass type II membrane protein {ECO:0000305}; Extracellular side {ECO:0000269|PubMed:18258799}.

Tissue specificity: Expressed preferentially in hematopoietic tissues. Expressed in all circulating Ag-presenting cells such as dendritic cells, myeloid cells, monocytes, macrophages, B-cells and epidermal Langerhans cells (at protein level). Expressed in peripheral blood leukocytes, neutrophils, moderate quantities in spleen, lymph node, and bone marrow, and at very low levels in thymus. {ECO:0000269|PubMed:10438934, ECO:0000269|PubMed:11178971, ECO:0000269|PubMed:11994513, ECO:0000269|PubMed:18258799, ECO:0000269|PubMed:20530286}.

Induction: TNF alpha, IL-1 alpha, and LPS, down-regulated expression at the surface of neutrophils (at protein level) (PubMed:11994513). Expression is decreased in dendritic cells by signals inducing their maturation (e.g. CD40 ligand, TLR9 ligands, LPS, and TNF alpha) (PubMed:10438934, PubMed:18258799). Isoform 2: mRNA expression is up- regulated by agonists of neutrophils CSF2/GM-CSF, IL3/interleukin-3, IL4/interleukin-4 and IL13/interleukin-13 (PubMed:11994513). {ECO:0000269|PubMed:10438934, ECO:0000269|PubMed:11994513, ECO:0000269|PubMed:18258799}.

Domain: Contains 1 copy of a cytoplasmic motif that is referred to as the immunoreceptor tyrosine-based inhibitor motif (ITIM). This motif is involved in modulation of cellular responses. The phosphorylated ITIM motif can bind the SH2 domain of several SH2-containing phosphatases (PubMed:20530286). 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 (PubMed:20530286). ITIM motif-associated signal transduction pathway involving phosphatases PTPN6 and PTPN11, SYK, Src kinases and MAP kinases is required for HIV-1 binding/entry and virus infection (PubMed:20530286). {ECO:0000269|PubMed:20530286}.

Sequence caution: Sequence=AAL56016.1; Type=Frameshift; Evidence={ECO:0000305};

Annotations taken from UniProtKB at the EBI.


Organism:		Homo sapiens (Human).
Taxonomy:		Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo.



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 (PubMed:27015765). Involved in regulating immune reactivity (PubMed:18258799, PubMed:10438934). 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 (PubMed:18258799, PubMed:20530286). In plasmacytoid dendritic cells, inhibits TLR9-mediated IFNA and TNF production (PubMed:18258799). 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:10438934). {ECO:0000269\|PubMed:10438934, ECO:0000269\|PubMed:18258799, ECO:0000269\|PubMed:20530286, ECO:0000269\|PubMed:27015765}.



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. {ECO:0000269\|PubMed:21536857}.


Subunit:		May interact with PTPN6 via its ITIM motif.
Subcellular location:		Cell membrane {ECO:0000269\|PubMed:18258799}; Single-pass type II membrane protein {ECO:0000305}; Extracellular side {ECO:0000269\|PubMed:18258799}.
Tissue specificity:		Expressed preferentially in hematopoietic tissues. Expressed in all circulating Ag-presenting cells such as dendritic cells, myeloid cells, monocytes, macrophages, B-cells and epidermal Langerhans cells (at protein level). Expressed in peripheral blood leukocytes, neutrophils, moderate quantities in spleen, lymph node, and bone marrow, and at very low levels in thymus. {ECO:0000269\|PubMed:10438934, ECO:0000269\|PubMed:11178971, ECO:0000269\|PubMed:11994513, ECO:0000269\|PubMed:18258799, ECO:0000269\|PubMed:20530286}.
Induction:		TNF alpha, IL-1 alpha, and LPS, down-regulated expression at the surface of neutrophils (at protein level) (PubMed:11994513). Expression is decreased in dendritic cells by signals inducing their maturation (e.g. CD40 ligand, TLR9 ligands, LPS, and TNF alpha) (PubMed:10438934, PubMed:18258799). Isoform 2: mRNA expression is up- regulated by agonists of neutrophils CSF2/GM-CSF, IL3/interleukin-3, IL4/interleukin-4 and IL13/interleukin-13 (PubMed:11994513). {ECO:0000269\|PubMed:10438934, ECO:0000269\|PubMed:11994513, ECO:0000269\|PubMed:18258799}.
Domain:		Contains 1 copy of a cytoplasmic motif that is referred to as the immunoreceptor tyrosine-based inhibitor motif (ITIM). This motif is involved in modulation of cellular responses. The phosphorylated ITIM motif can bind the SH2 domain of several SH2-containing phosphatases (PubMed:20530286). 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 (PubMed:20530286). ITIM motif-associated signal transduction pathway involving phosphatases PTPN6 and PTPN11, SYK, Src kinases and MAP kinases is required for HIV-1 binding/entry and virus infection (PubMed:20530286). {ECO:0000269\|PubMed:20530286}.
Sequence caution:		Sequence=AAL56016.1; Type=Frameshift; Evidence={ECO:0000305};