Narcissus Pseudonarcissus (Daffodil) Lectin (NPL, NPA), Unconjugated

NPL, isolated from daffodil bulbs, has a specificity toward α-linked mannose, preferring polymannose structures containing (α-1,6) linkages. Binding to mannose polymers can occur via internal mannose residues and is not dependent on structural integrity of a non-reducing end sugar. NPL also binds some galactomannans, and differs in other binding characteristics from a related lectin, Galanthus nivalis lectin. Unlike Con A, LCA, or PSA, NPL does not bind glucose.

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SKU: L-1370-5
Molecular Weight
59
Extinction Coefficient
1.87
Inhibiting or Eluting Sugar
a-methyl-mannoside
Unit Size
5 mg
Storage Instructions
2-8 °C
Sugar Specificity
Terminal Manα1−6 and terminal Manα1−3
Usage Summary
Although many buffers can be employed for reconstituting and diluting this lectin, 10 mM HEPES buffered saline, pH 8.5, 0.1 mM CaCl2is recommended. For preserving solutions stored at 4 ºC, 0.08% sodium azide can be used.
Applications
Glycobiology
Conjugate
Unconjugated
Technical Information

This lectin exists as a tetramer at neutral pH but below pH 5.0 and above pH 9.0, NPL dissociates into monomers.

Inhibiting Sugar: 400 mM α-methylmannoside