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
IMPG2
Genes >

IMPG2

The information on this page was automatically extracted from online scientific databases.

On this page:

What is the official name of the IMPG2 gene?

The official name of this gene is “interphotoreceptor matrix proteoglycan 2.”

IMPG2 is the gene's official symbol. The IMPG2 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 IMPG2 gene?

From Entrez GeneThis link leads to a site outside Genetics Home Reference.:

The protein encoded by this gene binds chondroitin sulfate and hyaluronan and is a proteoglycan. The encoded protein plays a role in the organization of the interphotoreceptor matrix and may promote the growth and maintenance of the light-sensitive photoreceptor outer segment. Defects in this gene are a cause of retinitis pigmentosa type 56 and maculopathy, IMPG2-related.[provided by RefSeq, Mar 2011]

From UniProtThis link leads to a site outside Genetics Home Reference.:

Chondroitin sulfate- and hyaluronan-binding proteoglycan involved in the organization of interphotoreceptor matrix; may participate in the maturation and maintenance of the light-sensitive photoreceptor outer segment. Binds heparin.

How are changes in the IMPG2 gene related to health conditions?

Genetics Home Reference provides information about retinitis pigmentosa, which is associated with changes in the IMPG2 gene.
UniProtThis link leads to a site outside Genetics Home Reference. provides the following information about the IMPG2 gene's known or predicted involvement in human disease.

Retinitis pigmentosa 56 (RP56)[1]This link leads to a site outside Genetics Home Reference.: A retinal dystrophy belonging to the group of pigmentary retinopathies. Retinitis pigmentosa is characterized by retinal pigment deposits visible on fundus examination and primary loss of rod photoreceptor cells followed by secondary loss of cone photoreceptors. Patients typically have night vision blindness and loss of midperipheral visual field. As their condition progresses, they lose their far peripheral visual field and eventually central vision as well. Note=The disease is caused by mutations affecting the gene represented in this entry.

Maculopathy, IMPG2-related (MACLP-IMPG2)[1]This link leads to a site outside Genetics Home Reference.: A mild maculopathy characterized by full-field electroretinogram responses within normal limits, normal color vision, elevation of the photoreceptor layer in the foveal region and mild nuclear sclerosis. Note=The disease is caused by mutations affecting the gene represented in this entry.

Entrez GeneThis link leads to a site outside Genetics Home Reference. lists the following diseases or traits (phenotypes) known or believed to be associated with changes in the IMPG2 gene.
  • Retinitis pigmentosa 56[1]This link leads to a site outside Genetics Home Reference.
UniProt and Entrez Gene cite these articles in OMIM, a catalog designed for genetics professionals and researchers that provides detailed information about genetic conditions and genes.
 Article
Number		Main Topic
[1]613581This link leads to a site outside Genetics Home Reference.RETINITIS PIGMENTOSA 56
607056This link leads to a site outside Genetics Home Reference.INTERPHOTORECEPTOR MATRIX PROTEOGLYCAN 2

Where is the IMPG2 gene located?

Cytogenetic Location: 3q12.2-q12.3

Molecular Location on chromosome 3: base pairs 100,941,389 to 101,039,418

The IMPG2 gene is located on the long (q) arm of chromosome 3 between positions 12.2 and 12.3.

The IMPG2 gene is located on the long (q) arm of chromosome 3 between positions 12.2 and 12.3.

More precisely, the IMPG2 gene is located from base pair 100,941,389 to base pair 101,039,418 on chromosome 3.

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

Where can I find additional information about IMPG2?

You and your healthcare professional may find the following resources about IMPG2 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 IMPG2 gene or gene products?

  • IPM200
  • RP56
  • SPACRCAN

See How are genetic conditions and genes named? in the Handbook.

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 IMPG2?

electroretinogram ; fundus ; gene ; peripheral ; photoreceptor ; pigment ; protein ; proteoglycan ; sclerosis ; sulfate

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

See also Understanding Medical Terminology.

 

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.

 
Published: May 20, 2013