Mouse Transferrin Protein, Mouse IgG2a Fc Tag, low endotoxin

Source : 

Mouse Transferrin, Mouse IgG2a Fc Tag, low endotoxin (TRN-M525b) is expressed from human 293 cells (HEK293). It contains AA Val 20 - His 697 (Accession # Q921I1-1).

 

Molecule : Transferrin

 

Synonyms : Transferrin,TF,DKFZp781D0156,PRO1557,PRO2086

 

Format : Powder

 

Category : Cytokines&Growth Factors

 

Accession : NP_598738.1

 

Storage : -20℃

 

Shipping condition : Powder,RT

 

Molecular Weight : 101.8 kDa

 

Characteristics :

This protein carries a mouse IgG2a Fc tag at the C-terminus. The protein has a calculated MW of 101.8 kDa. The protein migrates as 100 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.

 

Endotoxin Level : Less than 0.1 EU per μg by the LAL method.

 

Buffer : Tris with Glycine, Arginine and NaCl, pH7.5

 

Description :

Transferrin is also known as Serotransferrin, Beta-1 metal-binding globulin, TF, and is iron-binding blood plasma glycoproteins that control the level of free iron in biological fluids. Although iron bound to transferrin is less than 0.1% (4 mg) of the total body iron, it is the most important iron pool, with the highest rate of turnover (25 mg/24 h). The affinity of transferrin for Fe(III) is extremely high (1023 M−1 at pH 7.4) but decreases progressively with decreasing pH below neutrality.When not bound to iron, it is known as "apo-transferrin”. In humans, transferrin consists of a polypeptide chain containing 679 amino acids. It is a complex composed of alpha helices and beta sheets to form two domains (the first situated in the N-terminus and the second in the C-terminus). The N- and C- terminal sequences are represented by globular lobes and between the two lobes is an iron-binding site. The liver is the main source of manufacturing transferrin, but other sources such as the brain also produce this molecule . Transferrin is also associated with the innate immune system. Transferrin is found in the mucosa and binds iron, thus creating an environment low in free iron that impedes bacteria survival in a process called iron withholding. The level of transferrin decreases in inflammation. The metal binding properties of transferrin have a great influence on the biochemistry of plutonium in humans. Transferrin has a bacteriocidal effect on bacteria, in that it makes Fe3+ unavailable to the bacteria.Carbohydrate deficient transferrin increases in the blood with heavy ethanol consumption and can be monitored via laboratory testing.

 

References :

(1) Crichton RR, Charloteaux-Wauters M. 1987, Eur. J. Biochem. 164 (3): 485–506.
(2) Aisen, Phillip, et al.,1978, Journal of Biological Chemistry 253 (6): 1930–1937.
(3) Ritchie RF,et al., 1999, J. Clin. Lab. Anal. 13 (6): 273–9.
(4) Sharpe PC, 2001, Ann. Clin. Biochem. 38 (Pt 6): 652–64.