α (2→3,6,8,9) 神经氨酸酶 来源于产脲节杆菌

N755087-1T

1T

蛋白组学级

suitable for MALDI-TOF MS

神经氨酸酶是一种重要的去糖基化酶，能够通过水解 α (2→6)、α (2→3)、α (2→8) 和 α (2→9) 键（按给定的顺序亲和力）裂解所有非还原的不分枝 N-乙酰神经氨酸和 N-羟乙酰神经氨酸残基。使用高浓度的酶和延长孵育时间也可裂解分支的唾液酸。脱唾液酸糖蛋白可通过用各种外切糖苷酶处理进一步表征，导致部分或完全 O-脱糖基化。SDS-PAGE 和 MALDI-TOF MS 通常用于纯化、结构分析和测序过程。这些技术还可去除糖蛋白的异质性和电荷。 Neuraminidase is an important deglycosylation enzyme capable of cleaving all non-reducing unbranched N-acetylneuraminic and N-glycolylneuraminic acid residues by hydrolysis of α(2→6), α(2→3), α(2→8), and α(2→9) linkages (affinity in the order given). Branched sialic acids may also be cleaved with the use of high concentrations of enzyme and prolonged incubations. Desialylated glycoproteins may then be further characterized by treatment with various exoglycosidases resulting in partial or complete O-deglycosylation. SDS-PAGE and MALDI-TOF MS are typically utilized in purification, structural analysis, and sequencing process. These techniques also remove heterogeneity and charge from the glycoprotein.