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C5533 Sigma

Collagen from human placenta

Bornstein and Traub Type IV, powder, BioReagent, suitable for cell culture

Synonym: Collagen Type 4

Properties

Related Categories 2D Cell Culture, Adhesion, Attachment, and Matrix Factors, Adhesion, Attachment, and Matrix Factors for Stem Cell Expansion, Application Index, Attachment Factors,
product line   BioReagent
form   powder
impurities   HIV, hepatitis B and hepatitis C, none detected
solubility   acetic acid: soluble0.5-2.0 mg/mL (Dissolve for several hours at 2-8 °C, occasionally swirling.)
suitability   suitable for cell culture
storage temp.   −20°C
Gene Information   human ... COL4A1(1282), COL4A2(1284), COL4A3(1285), COL4A4(1286), COL4A5(1287), COL4A6(1288)

Description

Components

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.

Application

Type IV collagen has been found to play a key role in angiogenesis, neurological diseases and metastasis. Collagen from human placenta has been used to assess the bioelectric effects of quinine on airway epithelial cells, to study the selective toxicity of engineered lentvirus lytic peptides and in a particle aggregation assay for the rapid detection of fibronectin, fibrinogen and collagen receptors on Staphylococcus aureus. It has also been used in a magnesium-dependent, collagen-binding assay during characterization of human lung tumor-associated antigens.

Caution

This product should be stored desiccated at -20°C, and will retain activity in these conditions for 3 years.

Other Notes

Collagen is classified into a number of structurally and genetically distinct types. We use the nomenclature proposed by Bornstein and Traub. Be wary of confusing Sigma-type designations with recognized collagen classification types.

Preparation Note

This is a lyophilized powder that can be reconstituted in sterile .5 M acetic acid, PBS or water at 1 mg/mL. A PBS solution will be stable for at least one year at -20°C. It was prepared by a modification of the pepsin extraction method of Niyibizi, C. et. al

Biochem/physiol Actions

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.

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Bornstein and Traub Type IV, 0.3 mg/mL, sterile-filtered, BioReagent, suitable for cell culture

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