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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
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
X
Cytoband
Chromosome location (bp)
63634967 - 63809274
Number of transcriptsi
Number of protein-coding transcripts from the gene as defined by Ensembl.
Useful information about the protein provided by UniProt.
Acts as guanine nucleotide exchange factor (GEF) for CDC42. Promotes formation of GPHN clusters (By similarity)....show less
Molecular function (UniProt)i
Keywords assigned by UniProt to proteins due to their particular molecular function.
Guanine-nucleotide releasing factor
Gene summary (Entrez)i
Useful information about the gene from Entrez
The protein encoded by this gene is a Rho-like GTPase that switches between the active (GTP-bound) state and inactive (GDP-bound) state to regulate CDC42 and other genes. This brain-specific protein also acts as an adaptor protein for the recruitment of gephyrin and together these proteins facilitate receceptor recruitement in GABAnergic and glycinergic synapses. Defects in this gene are the cause of startle disease with epilepsy (STHEE), also known as hyperekplexia with epilepsy, as well as several other types of cognitive disability. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2017]...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 ENSP identifier links to the Ensembl website protein summary, while the ENST identifier links to the Ensembl website transcript summary for the selected splice variant. The data in the UniProt column can be expanded to show links to all matching UniProt identifiers for this protein.
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 Gene Ontology terms assigned to this protein are listed if expanding the Gene ontology column. The length of the protein (amino acid residues according to Ensembl), molecular mass (kDalton), predicted signal peptide (according to a majority of the signal peptide predictors SPOCTOPUS, SignalP 4.0, and Phobius) and the number of predicted transmembrane region(s) (according to MDM) are also reported.
Predicted intracellular proteins Intracellular proteins predicted by MDM and MDSEC Disease related genes Human disease related genes Nervous system diseases Epilepsy Mapped to neXtProt neXtProt - Evidence at protein level Protein evidence (Kim et al 2014)
Predicted intracellular proteins Intracellular proteins predicted by MDM and MDSEC Disease related genes Human disease related genes Nervous system diseases Epilepsy Mapped to neXtProt neXtProt - Evidence at protein level Protein evidence (Kim et al 2014)
Predicted intracellular proteins Intracellular proteins predicted by MDM and MDSEC Disease related genes Human disease related genes Nervous system diseases Epilepsy Mapped to neXtProt neXtProt - Evidence at protein level Protein evidence (Kim et al 2014)
Predicted intracellular proteins Intracellular proteins predicted by MDM and MDSEC Disease related genes Human disease related genes Nervous system diseases Epilepsy Mapped to neXtProt neXtProt - Evidence at protein level
The Human Protein Atlas project is funded
