Vectorlabs代理-Succinylated Wheat Germ Agglutinin (WGA), Agarose bound, 5 ml
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Succinylated Wheat Germ Agglutinin (WGA), Agarose bound, 5 ml
品牌:Vectorlabs
產品貨號:AL-1023S-5
規格:5 ml
產品詳情
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產品名稱:Succinylated Wheat Germ Agglutinin (WGA), Agarose bound, 5 ml
別名:琥珀?;←溑哐磕?,瓊脂糖交聯
產品描述:
Wheat germ agglutinin (WGA) succinylated has been reported to have properties distinct from the native lectin. Evidence suggests that Succinylated Wheat Germ agglutinin does not bind to sialic acid residues, unlike the native form, but retains its specificity toward N-acetylglucosamine. Using conjugates of the native lectin and the succinylated form can provide a system to distinguish between sialylated glycoconjugates and those containing only N-acetylglucosamine structures.Agarose bound*, succinylated WGA is prepared using our affinity-purified lectins. Heat stable, cross-linked 4% agarose beads with a molecular weight exclusion limit of about 2×107 daltons are used as the solid-phase matrix to which the lectins are covalently coupled. The attachment of the lectins to the beads is carefully controlled to preserve lectin activity and minimize conformational changes of the bound lectins that might result in nonspecific ionic or hydrophobic interactions. The technique we have developed to couple lectins to agarose beads inserts a hydrophilic spacer arm between the lectin and the matrix.This coupling method provides several advantages over the traditional cyanogen bromide procedure:Maximum carbohydrate binding activity of the coupled lectins is retainedLinkage is stable over a range of pH valuesConjugated proteins are not leached off the beads by Tris or other routinely used buffersNo residual charges are present after conjugation. This minimizes non-specific binding to the matrix.Our agarose bound lectins are supplied at a constant concentration of lectin per ml of settled beads. The concentration for each lectin is selected to achieve the highest glycoconjugate binding capacity per mg of lectin present in the beads. Each lot is tested for its binding capacity using glycoproteins known to bind the lectin. This provides a guideline for the user and assures the quality of our agarose bound lectins.Inhibiting/Eluting Sugar: Chitin Hydrolysate (Cat. No. SP-0090) or 500 mM N-acetylglucosamine with salt and/or acid elution generally required*3 mg lectin/ml gel
據報道,琥珀?;男←溑哐磕?(WGA) 具有不同于天然凝集素的特性。有證據表明,與天然形式不同,琥珀?;←溑哐磕夭慌c唾液酸殘基結合,但保留了其對 N-乙酰氨基葡萄糖的特異性。使用天然凝集素和琥珀?;问降木Y合物可以提供一個系統來區分唾液酸化糖綴合物和僅含有 N-乙酰氨基葡萄糖結構的糖綴合物。瓊脂糖結合*,琥珀?;?WGA 是使用我們的親和純化凝集素制備的。具有約 2×107 道爾頓分子量排除極限的熱穩定、交聯的 4% 瓊脂糖珠用作凝集素共價偶聯的固相基質。凝集素與珠子的連接受到仔細控制,以保持凝集素活性并最大限度地減少可能導致非特異性離子或疏水相互作用的結合凝集素的構象變化。我們開發的將凝集素與瓊脂糖珠偶聯的技術在凝集素和基質之間插入了一個親水性間隔臂。這種偶聯方法與傳統的溴化氰方法相比具有幾個優點:保持偶聯凝集素的最大碳水化合物結合活性pH 值范圍 結合的蛋白質不會被 Tris 或其他常規使用的緩沖液從珠子上浸出 結合后不存在殘留電荷。這最大限度地減少了與基質的非特異性結合。我們的瓊脂糖結合凝集素以每毫升沉降珠子的恒定凝集素濃度提供。選擇每種凝集素的濃度以實現珠中每毫克凝集素的最高糖綴合物結合能力。使用已知結合凝集素的糖蛋白測試每批的結合能力。這為用戶提供了指導并確保了我們瓊脂糖結合凝集素的質量。抑制/洗脫糖:甲殼素水解物(貨號 SP-0090)或 500 mM N-乙酰氨基葡萄糖,通常需要鹽和/或酸洗脫*3毫克凝集素/毫升凝膠
實驗應用:Glycobiology,Affinity Chromatography
推薦稀釋度:
Wash gel thoroughly with buffer before use to remove sugar added to stabilize the lectin. Recommended product for eluting glycoconjugates bound to this agarose-lectin: Glycoprotein Eluting solution, Cat. No. ES-5100. Alternatively, 0.5 M N-Acetyl-D-Glucosamine (GlcNAc) can be used.For those glycoconjugates having very high affinity for WGA, it may be necessary to lower the pH of the eluting sugar solution to pH 3.0 with acetic acid and increase the concentration of GlcNAc. After use, wash the gel with several column volumes of buffered saline, then resuspend gel in buffered saline containing 0.08% sodium azide for storage.
使用前用緩沖液徹底清洗凝膠,以去除為穩定凝集素而添加的糖。 用于洗脫與該瓊脂糖凝集素結合的糖綴合物的推薦產品:糖蛋白洗脫溶液,Cat. 編號 ES-5100。 或者,可以使用 0.5 M N-乙?;?D-氨基葡萄糖 (GlcNAc)。對于那些對 WGA 具有非常高親和力的糖綴合物,可能需要用乙酸將洗脫糖溶液的 pH 值降低到 3.0 并增加 GlcNAc 的濃度。 使用后,用幾柱體積的緩沖鹽水清洗凝膠,然后將凝膠重懸于含有 0.08% 疊氮化鈉的緩沖鹽水中保存。
偶聯:Agarose
存儲溶液:10 mM HEPES, pH 7.5, 0.15 M NaCl, 20 mM GlcNAc, 0.08% sodium azide
樣本類型:10 mM HEPES, pH 7.5, 0.15 M NaCl, 20 mM GlcNAc, 0.08% sodium azide