Human Collagen Type IV

上皮細胞, 内皮細胞, 筋肉細胞, 神経細胞

コラーゲンは複数の構造的および遺伝的に異なるタイプに分類されています。弊社ではBornsteinとTraubが提唱した命名法を使用しています。シグマ アルドリッチのタイプ分けは一般的なコラーゲン分類とは異なりますのでご注意ください。

All collagen molecules are composed of three polypeptide chains arranged in a triple helical conformation, with a primary structure that is mostly a repeating motif with glycine in every third position and proline or 4-hydroxyproline frequently preceding the glycine residue. Type IV collagen occurs only in the basement membranes and contains up to six genetically distinct a-chains.

During development, collagen IV is ubiquitously distributed in BMs. During the maturation process, this network gets partially replaced in a remarkably tissue specific manner, defining BM structure and function. Collagen IV has been shown to bind to platelets, hepatocytes, keratinocytes, endothelial, mesangial, pancreatic cells and some tumor cells.


Tissue injury in the autoimmune disease Goodpasture syndrome is due to pathogenic autoantibodies targeting the Collagen IV α3 chain . Mutations in COL4A5 are associated with Alport syndrome.

Store this product at -20°C. It will retain activity for 2 years under these conditions.

This product is supplied as a solution in 0.5 M acetic acid. It can be used to coat tissue-culture surfaces to promote cell attachment. The amount used in these applications is dependent on the cell type, plastic ware and incubation time. A recommended amount is 0.5-5 μg/cm^2. It was prepared by pepsin extraction and chromatographic purification.