Human Gene AFF1 (uc003hqj.4) Description and Page Index
Description: Homo sapiens AF4/FMR2 family, member 1 (AFF1), transcript variant 2, mRNA. RefSeq Summary (NM_005935): This gene encodes a member of the AF4/ lymphoid nuclear protein related to the Fragile X E syndrome (FRAXE) family of proteins, which have been implicated in human childhood lymphoblastic leukemia, fragile chromosome X intellectual disability, and ataxia. It is the prevalent mixed-lineage leukemia fusion gene associated with spontaneous acute lymphoblastic leukemia. Members of this family have three conserved domains: an N-terminal homology domain, an AF4/ lymphoid nuclear protein domain, and a C-terminal homology domain. The protein functions as a regulator of RNA polymerase II-mediated transcription through elongation and chromatin remodeling functions. Through RNA interference screens, this gene has been shown to promote the expression of CD133, a plasma membrane glycoprotein required for leukemia cell survival. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2017]. Transcript (Including UTRs) Position: hg19 chr4:87,928,153-88,062,206 Size: 134,054 Total Exon Count: 20 Strand: + Coding Region Position: hg19 chr4:87,928,560-88,056,853 Size: 128,294 Coding Exon Count: 20
ID:AFF1_HUMAN DESCRIPTION: RecName: Full=AF4/FMR2 family member 1; AltName: Full=ALL1-fused gene from chromosome 4 protein; Short=Protein AF-4; AltName: Full=Protein FEL; AltName: Full=Proto-oncogene AF4; INTERACTION: P04608:tat (xeno); NbExp=3; IntAct=EBI-2610180, EBI-6164389; SUBCELLULAR LOCATION: Nucleus (Potential). DISEASE: Note=A chromosomal aberration involving AFF1 is associated with acute leukemias. Translocation t(4;11)(q21;q23) with MLL/HRX. The result is a rogue activator protein. SIMILARITY: Belongs to the AF4 family. SEQUENCE CAUTION: Sequence=AAA36642.1; Type=Frameshift; Positions=897, 905, 1178; WEB RESOURCE: Name=Atlas of Genetics and Cytogenetics in Oncology and Haematology; URL="http://atlasgeneticsoncology.org/Genes/AF4.html";
Genetic Association Studies of Complex Diseases and Disorders
Lupus Erythematosus, Systemic Yukinori Okada et al. PLoS genetics 2012, A genome-wide association study identified AFF1 as a susceptibility locus for systemic lupus eyrthematosus in Japanese., PLoS genetics.
Triglycerides Sekar Kathiresan et al. BMC medical genetics 2007, A genome-wide association study for blood lipid phenotypes in the Framingham Heart Study., BMC medical genetics.
Using a 100K genome-wide scan, we have generated a set of putative associations for common sequence variants and lipid phenotypes. Validation of selected hypotheses in additional samples did not identify any new loci underlying variability in blood lipids. Lack of replication may be due to inadequate statistical power to detect modest quantitative trait locus effects (i.e., <1% of trait variance explained) or reduced genomic coverage of the 100K array. GWAS in FHS using a denser genome-wide genotyping platform and a better-powered replication strategy may identify novel loci underlying blood lipids.
Triglycerides Tanya M Teslovich et al. Nature 2010, Biological, clinical and population relevance of 95 loci for blood lipids., Nature.
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 P51825
The pictures above may be empty if there is no ModBase structure for the protein. The ModBase structure frequently covers just a fragment of the protein. You may be asked to log onto ModBase the first time you click on the pictures. It is simplest after logging in to just click on the picture again to get to the specific info on that model.
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.