COL5A1 Gene

Last updated on: 25.09.2022

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DefinitionThis section has been translated automatically.

The COL5A1 gene (COL5A1 stands for "collagen type V alpha 1 chain") is a protein-coding gene located on chromosome 9q34.3.

General informationThis section has been translated automatically.

The COL5A1 gene encodes an alpha chain for one of the low abundance fibrillar collagens. Alternative splicing of this gene results in multiple transcript variants.

Fibrillar collagen molecules are trimers that may consist of one or more types of alpha chains. Type V collagen is found in tissues containing type I collagen and appears to regulate the assembly of heterotypic fibers composed of both type I and type V collagen. Type V collagen forms only a small connective tissue component. It is distributed almost ubiquitously. Type V collagen binds to DNA, heparan sulfate, thrombospondin, heparin, and insulin.

The COL5A1- gene product is closely related to type XI coll agen, and it is possible that type V and XI collagen chains form a single collagen type with tissue-specific chain combinations. The encoded procollagen protein frequently occurs as the heterotrimer pro-alpha1(V)-pro-alpha1(V)-pro-alpha2(V).

Mutations in this gene are associated with Ehlers-Danlos syndrome, type I (classic type) and II. Furthermore, with multifocal fibromuscular dysplasia (I77.3), an arterial vascular disease (mainly of the internal carotid and renal arteries). It is characterized by proliferation of connective and muscular tissue in the vessel wall. This can lead to ischemic events in the downstream organs (or secondary hypertension in the case of the kidney) due to stenoses.

LiteratureThis section has been translated automatically.

  1. Brady A et al (2017): Ehlers-Danlos syndromes, rarer types. In: Ehlers-Danlos Society. American Journal of Medical Genetics 175C:70-115.
  2. Brinckmann J (2018) Hereditary connective tissue disorders. In. Plewig et al (eds) Braun-Falco`s Dermatology, Venereology and Allergology, Springer Reference Medicine pp 883-890.
  3. Bowen et al.(2017): Ehlers-Danlos syndrome, classical type. American Journal of Medical Genetics 175C:17-39.
  4. Byers PH et al (2019): Diagnosis, natural history and management in vascular Ehlers-Danlos syndrome. American Jourrnal of Medical Genetics 175C:40-47

Last updated on: 25.09.2022