C7521
Human Collagen Type IV
from human placenta, powder, suitable for substrate for collagenase and for diagnostic assay manufacturing
Synonym(s):
Collagen Type 4
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About This Item
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product name
Collagen from human placenta, Bornstein and Traub Type IV, powder
biological source
human placenta
Quality Level
description
Sigma Type VI
form
powder
impurities
HIV, hepatitis B and hepatitis C, none detected
solubility
0.5 M acetic acid: 1 mg/mL
suitability
suitable for substrate for collagenase
application(s)
diagnostic assay manufacturing
storage temp.
−20°C
Gene Information
human ... COL4A2(1284) , COL4A3(1285) , COL4A4(1286) , COL4A5(1287) , COL4A6(1288)
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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.
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.
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 is prepared by a modification of the pepsin extraction method of Glanville, R.W., et al.
Analysis Note
An SDS polyacrylamide gel electrophoresis test run under reducing conditions consistent with basement membrane collagen yields three major bands.
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.
Storage Class Code
11 - Combustible Solids
WGK
WGK 1
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
Certificates of Analysis (COA)
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M L Fulcher et al.
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Collagen type IV alpha1 (COL4A1) and alpha2 (COL4A2) form heterotrimers critical for vascular basement membrane stability and function. Patients with COL4A1 or COL4A2 mutations suffer from diverse cerebrovascular diseases, including cerebral microbleeds, porencephaly, and fatal intracerebral hemorrhage (ICH). However, the
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