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L3892

Sigma-Aldrich

Lectin from Triticum vulgaris (wheat)

peroxidase conjugate, lyophilized powder

Synonym(s):

WGA, Wheat germ agglutinin

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About This Item

UNSPSC Code:
12352202
NACRES:
NA.32

biological source

Triticum vulgaris

Quality Level

200

conjugate

peroxidase conjugate

Assay

≥85% protein basis (Warburg-Christian)

form

lyophilized powder

potency

<40 μg/mL agglutination activity

peroxidase activity

50-200 units/mg protein

composition

Protein, ~90% modified Warburg-Christian

storage temp.

−20°C

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Application

Detects glycoproteins containing β(1→4)-N-acetyl-D-glucosamine when used with appropriate peroxidase substrate
General Western Blot Protocol:
  • Glycoprotein sample size: 500ng
  • Lectin Concentration: 0.1ug/ml

  1. Load samples at 500 ng of glycoprotein per lane
  2. Run 4-20% Bis-Tris SDS page gel
  3. Transfer gel to a PVDF membrane
  4. Block membrane for 1 hr at RT with RIPA buffer (R0278 Sigma)
  5. Incubate HRP lectin at 0.1ug/ml with RIPA buffer for 2 hours at RT
  6. Wash membrane 5 x 5 minutes with 25ml RIPA buffer
  7. Detect using chemiluminescent substrate (CPS1-120)

Biochem/physiol Actions

WGA is not blood group specific but has an affinity for N-acetyl-β-D-glucosaminyl residues and N-acetyl-β-D-glucosamine oligomers. WGA contains no protein-bound carbohydrate.

Packaging

Package size based on protein content.

Unit Definition

One unit will form 1.0 mg of purpurogallin from pyrogallol in 20 sec at pH 6.0 at 20 °C.

Physical form

Contains citrate buffer

Preparation Note

Conjugates are prepared from affinity purified lectin.
Prepared from peroxidase type VI (P8375) using a modification of the method of O′Sullivan, which favors low molecular weight conjugates. Repurified after conjugation by affinity chromatography.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

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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