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Reviewed October 2007

What is the official name of the EIF2B3 gene?

The official name of this gene is “eukaryotic translation initiation factor 2B subunit gamma.”

EIF2B3 is the gene's official symbol. The EIF2B3 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 EIF2B3 gene?

The EIF2B3 gene provides instructions for making one of five parts of a protein called eIF2B, specifically the gamma subunit of this protein. The eIF2B protein helps regulate overall protein production (synthesis) in the cell by interacting with another protein, eIF2. The eIF2 protein is called an initiation factor because it is involved in starting (initiating) protein synthesis.

Under some conditions, eIF2B increases protein synthesis by helping to recycle molecules called GTP, which carry energy to the initiation factor. Under other conditions, it slows protein synthesis by binding tightly to the initiation factor, which converts the eIF2B protein into an inactive form and prevents recycling of GTP.

Proper regulation of protein synthesis is vital for ensuring that the correct levels of protein are available for the cell to cope with changing conditions. For example, cells must synthesize protein much faster if they are multiplying than if they are in a resting state.

How are changes in the EIF2B3 gene related to health conditions?

leukoencephalopathy with vanishing white matter - caused by mutations in the EIF2B3 gene

Mutations in the EIF2B3 gene have been identified in a few people with leukoencephalopathy with vanishing white matter. These mutations cause partial loss of eIF2B function. Impairment of eIF2B function makes it more difficult for the body's cells to regulate protein synthesis and deal with changing conditions and stress. Researchers believe that cells in the white matter (nerve fibers covered by a fatty substance called myelin that insulates and protects nerves) may be particularly affected by an abnormal response to stress, resulting in the signs and symptoms of leukoencephalopathy with vanishing white matter.

Where is the EIF2B3 gene located?

Cytogenetic Location: 1p34.1

Molecular Location on chromosome 1: base pairs 44,850,522 to 44,986,722

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

The EIF2B3 gene is located on the short (p) arm of chromosome 1 at position 34.1.

The EIF2B3 gene is located on the short (p) arm of chromosome 1 at position 34.1.

More precisely, the EIF2B3 gene is located from base pair 44,850,522 to base pair 44,986,722 on chromosome 1.

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

Where can I find additional information about EIF2B3?

You and your healthcare professional may find the following resources about EIF2B3 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 EIF2B3 gene or gene products?

  • EIF-2B
  • EIF2Bgamma
  • eukaryotic translation initiation factor 2B, subunit 3 (gamma, 58kD)
  • eukaryotic translation initiation factor 2B, subunit 3 gamma, 58kDa

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 EIF2B3?

cell ; gene ; GTP ; guanine ; leukoencephalopathy ; nucleotide ; protein ; stress ; subunit ; synthesis ; translation ; white matter

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

See also Understanding Medical Terminology.

References (14 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: October 2007
Published: February 8, 2016