Human Gene CD276 (ENST00000318424.9) from GENCODE V44
Description: Homo sapiens CD276 molecule (CD276), transcript variant 2, mRNA. (from RefSeq NM_025240) RefSeq Summary (NM_025240): The protein encoded by this gene belongs to the immunoglobulin superfamily, and thought to participate in the regulation of T-cell-mediated immune response. Studies show that while the transcript of this gene is ubiquitously expressed in normal tissues and solid tumors, the protein is preferentially expressed only in tumor tissues. Additionally, it was observed that the 3' UTR of this transcript contains a target site for miR29 microRNA, and there is an inverse correlation between the expression of this protein and miR29 levels, suggesting regulation of expression of this gene product by miR29. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Sep 2011]. Gencode Transcript: ENST00000318424.9 Gencode Gene: ENSG00000103855.18 Transcript (Including UTRs) Position: hg38 chr15:73,684,281-73,714,509 Size: 30,229 Total Exon Count: 8 Strand: + Coding Region Position: hg38 chr15:73,699,640-73,712,956 Size: 13,317 Coding Exon Count: 7
ID:CD276_HUMAN DESCRIPTION: RecName: Full=CD276 antigen; AltName: Full=4Ig-B7-H3; AltName: Full=B7 homolog 3; Short=B7-H3; AltName: Full=Costimulatory molecule; AltName: CD_antigen=CD276; Flags: Precursor; FUNCTION: May participate in the regulation of T-cell-mediated immune response. May play a protective role in tumor cells by inhibiting natural-killer mediated cell lysis as well as a role of marker for detection of neuroblastoma cells. May be involved in the development of acute and chronic transplant rejection and in the regulation of lymphocytic activity at mucosal surfaces. Could also play a key role in providing the placenta and fetus with a suitable immunological environment throughout pregnancy. Both isoform 1 and isoform 2 appear to be redundant in their ability to modulate CD4 T-cell responses. Isoform 2 is shown to enhance the induction of cytotoxic T-cells and selectively stimulates interferon gamma production in the presence of T-cell receptor signaling. SUBUNIT: Interacts with TREML2 and this interaction enhances T- cell activation. SUBCELLULAR LOCATION: Membrane; Single-pass type I membrane protein (Probable). TISSUE SPECIFICITY: Ubiquitous but not detectable in peripheral blood lymphocytes or granulocytes. Weakly expressed in resting monocytes. Expressed in dendritic cells derived from monocytes. Expressed in epithelial cells of sinonasal tissue. Expressed in extravillous trophoblast cells and Hofbauer cells of the first trimester placenta and term placenta. INDUCTION: By bacterial lipopolysaccharides (LPS) in monocytes and by ionomycin in T and B-lymphocytes. Up-regulated in cells mediating rejection of human transplants. MISCELLANEOUS: B7-H3 locus underwent genomic duplication leading to tandemly repeated immunoglobulin-like V and C domains (VC domains). The dominantly expressed human B7-H3 isoform contains tandemly duplicated VC domains. In contrast, mouse B7-H3 transcript contains only one single VC domain form due to an exon structure corresponding to V domain-(pseudoexon C)-(pseudoexon V)- C domain. This duplication appearing in primates is suggested to be very recent supporting a model of multiple independent emergence of tandem VC repeats within human and monkey species. SIMILARITY: Belongs to the immunoglobulin superfamily. BTN/MOG family. SIMILARITY: Contains 2 Ig-like C2-type (immunoglobulin-like) domains. SIMILARITY: Contains 2 Ig-like V-type (immunoglobulin-like) domains. SEQUENCE CAUTION: Sequence=BAC11344.1; Type=Erroneous initiation;
The RNAfold program from the Vienna RNA Package is used to perform the secondary structure predictions and folding calculations. The estimated folding energy is in kcal/mol. The more negative the energy, the more secondary structure the RNA is likely to have.
ModBase Predicted Comparative 3D Structure on Q5ZPR3
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Orthologous Genes in Other Species
Orthologies between human, mouse, and rat are computed by taking the best BLASTP hit, and filtering out non-syntenic hits. For more distant species reciprocal-best BLASTP hits are used. Note that the absence of an ortholog in the table below may reflect incomplete annotations in the other species rather than a true absence of the orthologous gene.