Lactoferrin from human milk
SIGMA/L0520 - ≥85% (SDS-PAGE), lyophilized powder
Synonym: Growth-inhibiting protein 12; Lactotransferrin; Talalactoferrin
CAS Number: 936541-36-5
MDL Number: MFCD00164307
Product Type: Chemical
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: L0520-100MG
| assay | ≥85% (SDS-PAGE) |
| biological source | human milk |
| composition | Protein, ≥90% biuret |
| form | lyophilized powder |
| InChI | 1S/C35H53N9O12/c1-16(2)27 |
| InChI key | QCBUWCQOKPLTDZ-PKRULZLPSA |
| mol wt | 82.4 kDa |
| Quality Level | 200  |
| SMILES string | N([C@@H](C(C)C)C(=O)N[C@@ |
| solubility | phosphate buffer: 1 mg/mL, clear to slightly hazy (0.01 M phosphate buffer, 0.0027 M potassium chloride and 0.137 M sodium chloride, pH 7.4, at 25 °C) |
| storage temp. | 2-8°C |
| technique(s) | microbiological culture: suitable |
| UniProt accession no. | P02788  |
| Analysis Note: | Contains iron, see certificate of analysis for lot specific information. |
| Application: | Lactoferrin was used to grow Streptococcus mutans in an iron-limiting medium. It was used to test if lactoferrin impedes epithelial cell adhesion in vitro. |
| Biochem/physiol Actions: | Lactoferrin is an iron binding protein. It is structurally similar to transferrin, the plasma iron transport protein; but lactoferrin has a much higher affinity for iron (250 fold). It is very abundant in colostrum and small amounts can also be found in tears, saliva, mucous secretions and in the secondary granules of neutrophils. It is made by mucosal epithelium and neutrophils and is released by these cells in response to inflammatory stimuli. Bacterial growth is inhibited by its ability to sequester iron and also permeabilize bacterial cell walls by binding to lipopolysaccharides through its N-terminus. Lactoferrin can inhibit viral infection by binding tightly to the viral envelope protein. This prevents cell-virus fusion by blocking the binding domain. Lactoferrin appears to activate host defense systems in part by stimulating the release of interleukin-8, a neutrophil activator. It may also be involved in antibody and interleukin synthesis, lymphocyte proliferation and complement activation. |
| Packaging: | 100 mg in glass bottle |
| Packaging: | 25 mg in poly bottle |
| Packaging: | 5 mg in glass bottle |
| Preparation Note: | Chromatographically purified. |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 3 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Purity | ≥85% (SDS-PAGE) |
| Storage Temp. | 2-8°C |
| UNSPSC | 12352202 |