Skip Navigation
Genetics Home Reference: your guide to understanding genetic conditions About   Site Map   Contact Us
Home A service of the U.S. National Library of Medicine®
Printer-friendly version


Reviewed January 2013

What is the official name of the ACSF3 gene?

The official name of this gene is “acyl-CoA synthetase family member 3.”

ACSF3 is the gene's official symbol. The ACSF3 gene is also known by other names, listed below.

Read more about gene names and symbols on the About page.

What is the normal function of the ACSF3 gene?

The ACSF3 gene provides instructions for making an enzyme involved in the formation (synthesis) of fatty acids, which are building blocks used to make fats (lipids). The ACSF3 enzyme performs a chemical reaction that converts malonic acid to malonyl-CoA, which is the first step of fatty acid synthesis. Based on this activity, the enzyme is classified as a malonyl-CoA synthetase. The ACSF3 enzyme also converts methylmalonic acid to methylmalonyl-CoA, making it a methylmalonyl-CoA synthetase as well.

Fatty acid synthesis occurs through two pathways, one of which takes place in cellular structures called mitochondria. Mitochondria convert the energy from food into a form that cells can use, and fatty acid synthesis in these structures is thought to be important for their proper functioning. The ACSF3 enzyme is found only in mitochondria and is involved in mitochondrial fatty acid synthesis.

Does the ACSF3 gene share characteristics with other genes?

The ACSF3 gene belongs to a family of genes called ACS (acyl-CoA synthetase family).

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? in the Handbook.

How are changes in the ACSF3 gene related to health conditions?

combined malonic and methylmalonic aciduria - caused by mutations in the ACSF3 gene

About a dozen mutations in the ACSF3 gene have been found in people with combined malonic and methylmalonic aciduria (CMAMMA), a condition characterized by elevated levels of chemicals known as malonic acid and methylmalonic acid in the body. This condition can cause development and growth problems beginning in childhood or neurological problems beginning in adulthood.

Most ACSF3 gene mutations involved in CMAMMA change single protein building blocks (amino acids) in the ACSF3 enzyme. The altered enzyme likely has little or no function. Because the enzyme cannot convert malonic and methylmalonic acids, they build up in the body. Damage to organs and tissues caused by accumulation of malonic and methylmalonic acids may be responsible for the signs and symptoms of CMAMMA, although the mechanisms are unclear.

Where is the ACSF3 gene located?

Cytogenetic Location: 16q24.3

Molecular Location on chromosome 16: base pairs 89,093,809 to 89,155,846

(Homo sapiens Annotation Release 107, GRCh38.p2) (NCBIThis link leads to a site outside Genetics Home Reference.)

The ACSF3 gene is located on the long (q) arm of chromosome 16 at position 24.3.

The ACSF3 gene is located on the long (q) arm of chromosome 16 at position 24.3.

More precisely, the ACSF3 gene is located from base pair 89,093,809 to base pair 89,155,846 on chromosome 16.

See How do geneticists indicate the location of a gene? in the Handbook.

Where can I find additional information about ACSF3?

You and your healthcare professional may find the following resources about ACSF3 helpful.

You may also be interested in these resources, which are designed for genetics professionals and researchers.

What other names do people use for the ACSF3 gene or gene products?

  • acyl-CoA synthetase family member 3, mitochondrial
  • acyl-CoA synthetase family member 3, mitochondrial precursor

Where can I find general information about genes?

The Handbook provides basic information about genetics in clear language.

These links provide additional genetics resources that may be useful.

What glossary definitions help with understanding ACSF3?

acids ; aciduria ; CoA ; enzyme ; fatty acids ; gene ; mitochondria ; neurological ; precursor ; protein ; synthesis

You may find definitions for these and many other terms in the Genetics Home Reference Glossary.

See also Understanding Medical Terminology.

References (6 links)


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? in the Handbook.

Reviewed: January 2013
Published: February 1, 2016