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

What is the official name of the RP1 gene?

The official name of this gene is “retinitis pigmentosa 1 (autosomal dominant).”

RP1 is the gene's official symbol. The RP1 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 RP1 gene?

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

This gene encodes a member of the doublecortin family. The protein encoded by this gene contains two doublecortin domains, which bind microtubules and regulate microtubule polymerization. The encoded protein is a photoreceptor microtubule-associated protein and is required for correct stacking of outer segment disc. This protein and the RP1L1 protein, another retinal-specific protein, play essential and synergistic roles in affecting photosensitivity and outer segment morphogenesis of rod photoreceptors. Because of its response to in vivo retinal oxygen levels, this protein was initially named ORP1 (oxygen-regulated protein-1). This protein was subsequently designated RP1 (retinitis pigmentosa 1) when it was found that mutations in this gene cause autosomal dominant retinitis pigmentosa. Mutations in this gene also cause autosomal recessive retinitis pigmentosa. Transcript variants resulted from an alternative promoter and alternative splicings have been found, which overlap the current reference sequence and has several exons upstream and downstream of the current reference sequence. However, the biological validity and full-length nature of some variants cannot be determined at this time.[provided by RefSeq, Sep 2010]

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

Microtubule-associated protein regulating the stability and length of the microtubule-based axoneme of photoreceptors. Required for the differentiation of photoreceptor cells, it plays a role in the organization of the outer segment of rod and cone photoreceptors ensuring the correct orientation and higher-order stacking of outer segment disks along the photoreceptor axoneme.

How are changes in the RP1 gene related to health conditions?

Genetics Home Reference provides information about retinitis pigmentosa, which is associated with changes in the RP1 gene.
UniProtThis link leads to a site outside Genetics Home Reference. provides the following information about the RP1 gene's known or predicted involvement in human disease.

Retinitis pigmentosa 1 (RP1): 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.[1]This link leads to a site outside Genetics Home Reference. The disease is caused by mutations affecting the gene represented in this entry.

NCBI 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 RP1 gene.
  • Retinitis pigmentosa 1[1]This link leads to a site outside Genetics Home Reference.
UniProt and NCBI Gene cite these articles in OMIM, a catalog designed for genetics professionals and researchers that provides detailed information about genetic conditions and genes.
Main Topic

Where is the RP1 gene located?

Cytogenetic Location: 8q12.1

Molecular Location on chromosome 8: base pairs 54,616,066 to 54,630,833

The RP1 gene is located on the long (q) arm of chromosome 8 at position 12.1.

The RP1 gene is located on the long (q) arm of chromosome 8 at position 12.1.

More precisely, the RP1 gene is located from base pair 54,616,066 to base pair 54,630,833 on chromosome 8.

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

Where can I find additional information about RP1?

You and your healthcare professional may find the following resources about RP1 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 RP1 gene or gene products?

  • DCDC4A
  • ORP1

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 RP1?

autosomal ; autosomal dominant ; autosomal recessive ; axoneme ; differentiation ; fundus ; gene ; in vivo ; microtubule ; oxygen ; peripheral ; photoreceptor ; photosensitivity ; pigment ; promoter ; protein ; recessive ; retina ; rod photoreceptors ; transcript

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: August 25, 2014