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
产品货号:AL-1023S-5
规格:5 ml
产品详情
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产品名称:Succinylated Wheat Germ Agglutinin (WGA), Agarose bound, 5 ml
别名:琥珀酰化小麦胚芽凝集素,琼脂糖交联
产品描述:
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
据报道,琥珀酰化的小麦胚芽凝集素 (WGA) 具有不同于天然凝集素的特性。有证据表明,与天然形式不同,琥珀酰化小麦胚芽凝集素不与唾液酸残基结合,但保留了其对 N-乙酰氨基葡萄糖的特异性。使用天然凝集素和琥珀酰化形式的缀合物可以提供一个系统来区分唾液酸化糖缀合物和仅含有 N-乙酰氨基葡萄糖结构的糖缀合物。琼脂糖结合*,琥珀酰化 WGA 是使用我们的亲和纯化凝集素制备的。具有约 2×107 道尔顿分子量排除极限的热稳定、交联的 4% 琼脂糖珠用作凝集素共价偶联的固相基质。凝集素与珠子的连接受到仔细控制,以保持凝集素活性并最大限度地减少可能导致非特异性离子或疏水相互作用的结合凝集素的构象变化。我们开发的将凝集素与琼脂糖珠偶联的技术在凝集素和基质之间插入了一个亲水性间隔臂。这种偶联方法与传统的溴化氰方法相比具有几个优点:保持偶联凝集素的最大碳水化合物结合活性pH 值范围 结合的蛋白质不会被 Tris 或其他常规使用的缓冲液从珠子上浸出 结合后不存在残留电荷。这最大限度地减少了与基质的非特异性结合。我们的琼脂糖结合凝集素以每毫升沉降珠子的恒定凝集素浓度提供。选择每种凝集素的浓度以实现珠中每毫克凝集素的最高糖缀合物结合能力。使用已知结合凝集素的糖蛋白测试每批的结合能力。这为用户提供了指导并确保了我们琼脂糖结合凝集素的质量。抑制/洗脱糖:甲壳素水解物(货号 SP-0090)或 500 mM N-乙酰氨基葡萄糖,通常需要盐和/或酸洗脱*3毫克凝集素/毫升凝胶
实验应用:Glycobiology,Affinity Chromatography
推荐稀释度:
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.
使用前用缓冲液彻底清洗凝胶,以去除为稳定凝集素而添加的糖。 用于洗脱与该琼脂糖凝集素结合的糖缀合物的推荐产品:糖蛋白洗脱溶液,Cat. 编号 ES-5100。 或者,可以使用 0.5 M N-乙酰基-D-氨基葡萄糖 (GlcNAc)。对于那些对 WGA 具有非常高亲和力的糖缀合物,可能需要用乙酸将洗脱糖溶液的 pH 值降低到 3.0 并增加 GlcNAc 的浓度。 使用后,用几柱体积的缓冲盐水清洗凝胶,然后将凝胶重悬于含有 0.08% 叠氮化钠的缓冲盐水中保存。
偶联:Agarose
存储溶液:10 mM HEPES, pH 7.5, 0.15 M NaCl, 20 mM GlcNAc, 0.08% sodium azide
样本类型:10 mM HEPES, pH 7.5, 0.15 M NaCl, 20 mM GlcNAc, 0.08% sodium azide