Invitrogen™ Collagen I Monoclonal Antibody (COL-1)

Description

The antibody is reactive with the native (helical) form of collagen type I in ELISA and dot blot. The product is not reactive when tested on thermally denatured molecules. In immunohistochemical staining of acetone-fixed and unfixed frozen sections, a strong staining of connective tissue fibers is seen. Using the dot blot and ELISA techniques, the antibody shows no cross-reactivity with collagen types, II, III, IV, V, VI, VII, IX, X and XI. The epitope recognized by the antibody is sensitive to routine formalin fixation and paraffin embedding. Store product as a concentrated solution. Centrifuge briefly prior to opening the vial.

Collagen I is a Type I collagen with a triple helix structure comprised of two alpha-1 chains and one alpha-2 chain. Collagen I is a member of group I collagen (fibril-forming collagen) found in most connective tissues, and is abundant in bone, cornea, dermis and tendon. Mutations in the COL1A2 gene encoding the alpha-2 chain are associated with osteogenesis imperfecta types I-IV, Ehlers-Danlos syndrome type VIIB, recessive Ehlers-Danlos syndrome Classical type, idiopathic osteoporosis, and atypical Marfan syndrome. Symptoms associated with mutations in the COL1A2 gene which codes for the alpha-2 chain, however, tend to be less severe than mutations in the COL1A1 gene, reflecting the different role of alpha-2 chains in matrix integrity. Reciprocal translocations between chromosomes 17 and 22, where Collagen Type 1 genes and the gene for platelet derived growth factor beta are located, are associated with a particular type of skin tumor called dermatofibrosarcoma protuberans, resulting from unregulated expression of the growth factor. Two transcripts, resulting from the use of alternate polyadenylation signals, have been identified.