Psophocarpus tetragonolobus (PTL/PTA I)

Cat# 518690-2mg

Size : 2mg

Brand : US Biological



Grade
Affinity purified

Shipping Temp
Blue Ice

Storage Temp
-20°C

PTL/PTA I
Psophocarpus tetragonolobus lectin (PTL I, psophocarpin B1, a storage protein with chymotrypsin inhibitory activity), is isolated from winged bean seeds and purified by affinity chromatography. The seed contains two lectins in which PTL I is the basic of the two. PTL I is a dimeric glycoprotein with specificity to GalNAc, with eluting sugar GalNAc. This lectin agglutinates trypsinized rabbit and human erythrocytes (type A and B) but not trypsinized human type O erythrocytes. PTL I recognize blood group A-substance derived oligosaccharides such as trisaccharide GalNAcalpha1-3Galβ1-4Glc.

Source:
Winged bean

Blood Specificity:
Rabbit Agglutinin, O (- SA)

Sugar Specificity:
N-Acetylgalactosamine, Galactose

Inhibitory Carbohydrate:
N-Acetylgalactosamine

Storage and Stability:
Lyophilized powder may be stored at -20°C. Stable for 12 months after receipt at -20°C. Reconstitute with sterile buffer or ddH2O. Aliquot to avoid repeated freezing and thawing. Store at -20°C. Reconstituted product is stable for 6 months at -20°C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.

Source
Winged bean

Purity
Affinity purified

Form
Supplied as a lyophilized powder.


Important Note
This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.