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General description of the gene and the encoded protein(s) using information from HGNC and Ensembl, as well as predictions made by the Human Protein Atlas project.
Gene namei
Official gene symbol, which is typically a short form of the gene name, according to HGNC.
Assigned HPA protein class(es) for the encoded protein(s).
Disease related genes Human disease related genes Transcription factors
Predicted locationi
All transcripts of all genes have been analyzed regarding the location(s) of corresponding protein based on prediction methods for signal peptides and transmembrane regions.
Genes with at least one transcript predicted to encode a secreted protein, according to prediction methods or to UniProt location data, have been further annotated and classified with the aim to determine if the corresponding protein(s) are secreted or actually retained in intracellular locations or membrane-attached.
Remaining genes, with no transcript predicted to encode a secreted protein, will be assigned the prediction-based location(s).
The annotated location overrules the predicted location, so that a gene encoding a predicted secreted protein that has been annotated as intracellular will have intracellular as the final location.
Gene information from Ensembl and Entrez, as well as links to available gene identifiers are displayed here. Information was retrieved from Ensembl if not indicated otherwise.
Chromosome
2
Cytoband
p21
Chromosome location (bp)
44941702 - 44946071
Number of transcriptsi
Number of protein-coding transcripts from the gene as defined by Ensembl.
Useful information about the protein provided by UniProt.
Transcriptional regulator which can act as both a transcriptional repressor and activator by binding a ATTA homeodomain core recognition sequence on these target genes. During forebrain development represses WNT1 expression allowing zona limitans intrathalamica formation and thereby ensuring proper anterio-posterior patterning of the diencephalon and formation of the rostral diencephalon. Acts as a direct upstream activator of SHH expression in the rostral diencephalon ventral midline and that in turn SHH maintains its expression. In addition, Six3 activity is required for the formation of the telencephalon. During postnatal stages of brain development is necessary for ependymal cell maturation by promoting the maturation of radial glia into ependymal cells through regulation of neuroblast proliferation and migration. Acts on the proliferation and differentiation of neural progenitor cells through activating transcription of CCND1 and CCND2. During early lens formation plays a role in lens induction and specification by activating directly PAX6 in the presumptive lens ectoderm. In turn PAX6 activates SIX3 resulting in activation of PDGFRA and CCND1 promoting cell proliferation. Also is required for the neuroretina development by directly suppressing WNT8B expression in the anterior neural plate territory. Its action during retina development and lens morphogenesis is TLE5 and TLE4-dependent manner. Furthermore, during eye development regulates several genes expression. Before and during early lens development represses the CRYGF promoter by binding a SIX repressor element. Directly activates RHO transcription, or cooperates with CRX or NRL. Six3 functions also in the formation of the proximodistal axis of the optic cup, and promotes the formation of optic vesicles-like structures. During pituitary development, acts in parallel or alternatively with HESX1 to control cell proliferation through Wnt/beta-catenin pathway (By similarity). Plays a role in eye development by suppressing WNT1 expression and in dorsal-ventral patterning by repressing BMP signaling pathway....show less
Molecular function (UniProt)i
Keywords assigned by UniProt to proteins due to their particular molecular function.
Developmental protein, DNA-binding, Repressor
Biological process (UniProt)i
Keywords assigned by UniProt to proteins because they are involved in a particular biological process.
Transcription, Transcription regulation
Gene summary (Entrez)i
Useful information about the gene from Entrez
This gene encodes a member of the sine oculis homeobox transcription factor family. The encoded protein plays a role in eye development. Mutations in this gene have been associated with holoprosencephaly type 2. [provided by RefSeq, Oct 2009]...show less
PROTEIN INFORMATIONi
The protein information section displays alternative protein-coding transcripts (splice variants) encoded by this gene according to the Ensembl database.
The Splice variant identifier links to the Ensembl website protein summary for the selected splice variant. The data in the Swissprot and TrEMBL columns links to corresponding pages in the UniProt database.
The protein classes assigned to this protein are shown if expanding the data in the protein class column. Parent protein classes are in bold font and subclasses are listed under the parent class.
The length of the protein (amino acid residues according to Ensembl), molecular mass (kDalton), predicted signal peptide and number of predicted transmembrane region(s) according to in-house majority decision methods based on sets of predictors are also reported.
Predicted intracellular proteins Intracellular proteins predicted by MDM and MDSEC Transcription factors Helix-turn-helix domains Disease related genes Human disease related genes Congenital malformations Congenital malformations of the nervous system Mapped to neXtProt neXtProt - Evidence at protein level
Show all
GO:0000785[chromatin] GO:0000978[RNA polymerase II cis-regulatory region sequence-specific DNA binding] GO:0000981[DNA-binding transcription factor activity, RNA polymerase II-specific] GO:0001222[transcription corepressor binding] GO:0001228[DNA-binding transcription activator activity, RNA polymerase II-specific] GO:0001654[eye development] GO:0002070[epithelial cell maturation] GO:0002088[lens development in camera-type eye] GO:0003404[optic vesicle morphogenesis] GO:0003677[DNA binding] GO:0005515[protein binding] GO:0005634[nucleus] GO:0005667[transcription regulator complex] GO:0006355[regulation of DNA-templated transcription] GO:0006357[regulation of transcription by RNA polymerase II] GO:0007420[brain development] GO:0007601[visual perception] GO:0009946[proximal/distal axis specification] GO:0014016[neuroblast differentiation] GO:0021537[telencephalon development] GO:0021798[forebrain dorsal/ventral pattern formation] GO:0021846[cell proliferation in forebrain] GO:0021978[telencephalon regionalization] GO:0021983[pituitary gland development] GO:0042127[regulation of cell population proliferation] GO:0045665[negative regulation of neuron differentiation] GO:0045892[negative regulation of DNA-templated transcription] GO:0045944[positive regulation of transcription by RNA polymerase II] GO:0061074[regulation of neural retina development] GO:0070306[lens fiber cell differentiation] GO:0097402[neuroblast migration] GO:1901987[regulation of cell cycle phase transition] GO:1902692[regulation of neuroblast proliferation] GO:1902742[apoptotic process involved in development] GO:1990086[lens fiber cell apoptotic process] GO:1990837[sequence-specific double-stranded DNA binding] GO:2000177[regulation of neural precursor cell proliferation]
The Human Protein Atlas project is funded
