CO3A1: Collagen type III occurs in most soft connective tissues along with type I collagen. Defects in COL3A1 are a cause of Ehlers-Danlos syndrome type 3 (EDS3); also known as benign hypermobility syndrome. EDS is a connective tissue disorder characterized by hyperextensible skin, atrophic cutaneous scars due to tissue fragility and joint hyperlaxity. EDS3 is a form of Ehlers-Danlos syndrome characterized by marked joint hyperextensibility without skeletal deformity. Defects in COL3A1 are the cause of Ehlers-Danlos syndrome type 4 (EDS4). EDS is a connective tissue disorder characterized by hyperextensible skin, atrophic cutaneous scars due to tissue fragility and joint hyperlaxity. EDS4 is the most severe form of the disease. It is characterized by the joint and dermal manifestations as in other forms of the syndrome, characteristic facial features (acrogeria) in most patients, and by proneness to spontaneous rupture of bowel and large arteries. The vascular complications may affect all anatomical areas. Defects in COL3A1 are a cause of susceptibility to aortic aneurysm abdominal (AAA). AAA is a common multifactorial disorder characterized by permanent dilation of the abdominal aorta, usually due to degenerative changes in the aortic wall. Histologically, AAA is characterized by signs of chronic inflammation, destructive remodeling of the extracellular matrix, and depletion of vascular smooth muscle cells. Belongs to the fibrillar collagen family. 2 isoforms of the human protein are produced by alternative splicing.
Protein type: Extracellular matrix; Secreted, signal peptide; Motility/polarity/chemotaxis; Secreted; Cell adhesion
Chromosomal Location of Human Ortholog: 2q31
Cellular Component: extracellular matrix; extracellular space; endoplasmic reticulum lumen; extracellular region; collagen type III
Molecular Function: integrin binding; protein binding; platelet-derived growth factor binding; extracellular matrix structural constituent; metal ion binding; SMAD binding
Biological Process: integrin-mediated signaling pathway; skin development; axon guidance; platelet activation; receptor-mediated endocytosis; extracellular matrix organization and biogenesis; collagen fibril organization; wound healing; cell-matrix adhesion; heart development; negative regulation of immune response; positive regulation of Rho protein signal transduction; collagen catabolic process; extracellular matrix disassembly; response to radiation; gut development; response to mechanical stimulus; transforming growth factor beta receptor signaling pathway; response to cytokine stimulus; fibril organization and biogenesis; peptide cross-linking; cerebral cortex development; skeletal development; aging
Disease: Ehlers-danlos Syndrome, Type Iv, Autosomal Dominant; Ehlers-danlos Syndrome, Type Iii
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