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The official name of this gene is “zinc finger, FYVE domain containing 26.”
ZFYVE26 is the gene's official symbol. The ZFYVE26 gene is also known by other names, listed below.
The ZFYVE26 gene provides instructions for making a protein called spastizin, which is found in most tissues. Spastizin is important in a process called autophagy, in which worn-out cell parts and unneeded proteins are recycled within cells. Specifically, spastizin is involved in the formation and maturation of sacs called autophagosomes (or autophagic vacuoles). Autophagosomes surround materials that need to be recycled. The autophagosome then attaches (fuses) to a cell structure called a lysosome, which breaks down and recycles the materials.
In addition to being involved in clearing cells of unneeded materials, spastizin also plays a role in ensuring the proper division of cells. During the final stages of cell division, spastizin participates in the process by which the dividing cells separate from one another (cytokinesis).
The ZFYVE26 gene belongs to a family of genes called ZFYVE (zinc fingers, FYVE-type).
A gene family is a group of genes that share important characteristics. Classifying individual genes into families helps researchers describe how genes are related to each other. For more information, see What are gene families? (http://ghr.nlm.nih.gov/handbook/howgeneswork/genefamilies) in the Handbook.
More than 30 mutations in the ZFYVE26 gene have been found to cause spastic paraplegia type 15. This condition is characterized by progressive movement problems, intellectual disability, and vision problems. Many of the ZFYVE26 gene mutations that cause this condition result in a shortened spastizin protein that is quickly broken down. As a result, functional autophagosomes are not produced, autophagy cannot occur, and recycling of materials within cells is decreased. An inability to break down unneeded materials, and the subsequent accumulation of these materials in cells, leads to cell dysfunction and often cell death. The loss of cells in the brain and other parts of the body is responsible for many of the features of spastic paraplegia type 15.
It is unclear whether a lack of spastizin protein interferes with normal cytokinesis and whether impaired cell division contributes to the signs and symptoms of spastic paraplegia type 15.
Cytogenetic Location: 14q24.1
Molecular Location on chromosome 14: base pairs 67,728,891 to 67,816,589
The ZFYVE26 gene is located on the long (q) arm of chromosome 14 at position 24.1.
More precisely, the ZFYVE26 gene is located from base pair 67,728,891 to base pair 67,816,589 on chromosome 14.
See How do geneticists indicate the location of a gene? (http://ghr.nlm.nih.gov/handbook/howgeneswork/genelocation) in the Handbook.
You and your healthcare professional may find the following resources about ZFYVE26 helpful.
You may also be interested in these resources, which are designed for genetics professionals and researchers.
See How are genetic conditions and genes named? (http://ghr.nlm.nih.gov/handbook/mutationsanddisorders/naming) in the Handbook.
autophagy ; cell ; cell division ; cytokinesis ; disability ; domain ; gene ; lysosome ; paraplegia ; protein
You may find definitions for these and many other terms in the Genetics Home Reference Glossary (http://ghr.nlm.nih.gov/glossary).
The resources on this site should not be used as a substitute for professional medical care or advice. Users seeking information about a personal genetic disease, syndrome, or condition should consult with a qualified healthcare professional. See How can I find a genetics professional in my area? (http://ghr.nlm.nih.gov/handbook/consult/findingprofessional) in the Handbook.