ATL3

atlastin GTPase 3

Gene Function

Atlastin-3 (ATL3) is a membrane-anchored GTPase that mediates the GTP-dependent fusion of endoplasmic reticulum (ER) membranes, maintaining the continuous ER network. It facilitates the formation of three-way junctions where ER tubules intersect. Two atlastin-3 on neighboring ER tubules bind GTP and form loose homodimers through the GB1/RHD3-type G domains and 3HB regions. Upon GTP hydrolysis, the 3HB regions tighten, pulling the membranes together to drive their fusion. After fusion, the homodimer disassembles upon release of inorganic phosphate (Pi). Subsequently, GDP dissociates, resetting the monomers to a conformation ready for a new fusion cycle (By similarity) Source: UniProt

Relationship to CMT

HSN AD
1 subtype
11q13.1
First described 2014

Subtype Inheritance Class OMIM Sentinel Publication
SubtypeHSN-1F Inheritanceautosomal dominant ClassHSN OMIM615632 Sentinel Publication

2014 · 10.1093/brain/awt357

Stored Identifiers

No HGNC Aliases
hgnc_idHGNC:24526
ensembl_gene_idENSG00000184743
coords_grch38chr11:63624087-63671921
coords_grch37chr11:63391559-63439393
entrez_id25923
omim_gene609369
uniprot_idsQ6DD88
refseq_accessionNM_015459
mane_refseqNM_015459.5
mane_ensemblENST00000398868.8

ClinVar Variants

Pathogenic and likely pathogenic variants in ATL3, as classified in ClinVar, are read live from NCBI. Only aggregate germline records are shown. Uncertain and conflicting classifications are not. Experts in CMT makes no claim to the accuracy of ClinVar data. This index is provided for informational purposes only.

Review stars are ClinVar’s measure of how well a classification is supported: four for a practice guideline, three for an expert panel review, two for agreement among multiple submitters, one for a single submitter with criteria provided, and none where no criteria were provided.

Reported in CMT
Reported in Other Diseases

Reported in a disease other than CMT. Listed apart rather than counted as CMT variants.

Variants w/o a Recorded Disease

Pathogenic or likely pathogenic in ClinVar, submitted without a disease recorded.

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