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特色產品QA-Bio-甲基化板(LC-PERMET-96)是可擴展的,可以用于1到96個樣本的數量。將未用的試劑盒組分和未用的反應板孔存放在推薦的儲存條件下,以便日后進一步的樣本準備。
注意:由于對碘甲烷/甲基碘的運輸限制,無法將這一組分隨試劑盒提供。建議從您當地的化學品供應商處購買純度≥99.0%(氣相色譜法)的甲基碘。甲基碘的同義詞:碘甲烷,CAS編號:74-88-4。

艾美捷QA-Bio-過甲基化試劑盒(LT-PERMET-VP96)組成:
96 well Permethylation plate 1 Plate
Dimethyl sulfoxide (DMSO) 40.0 ml
Dichloromethane (DCM) 60.0 ml
96 well Balance Plate 1 Plate
96 well Plate Lid 1 Lid / Mat
QA-Bio-過甲基化試劑盒用于糖苷的甲基化處理。甲基化可以穩定唾液酸,以便進行MALDI質譜分析,并有助于連接分析研究(MALDI-MS,ESI-MS)。
提高并增強質譜中糖苷的電離效率
增加糖苷的疏水性能,使其能夠進行液相色譜-質譜(LC-MS)分析
可執行相對定量和絕對定量
穩定唾液酸基團
更容易確定分支和糖苷鍵的位置
能夠在正離子模式下檢測中性糖苷和酸性糖苷
時間表
步驟1:樣品的過甲基化
a. Preparation of glycans As required
b. Addition of DMSO and sample to plate 15 minutes
c. Incubation 15 minutes
d. Addition of MeI to permethylation plate 15 minutes
e. Incubation 60 minutes
步驟2:全甲基化樣品的提取和儲存
a. Extraction of samples 3-4 hours
b. Drying permethylated samples 10-30 minutes
c. Addition of 70% MeOH for storage 10-20 minutes
QA-Bio-過甲基化試劑盒文獻參考:
A. Dell; A. J. Reaseon; Kay-Hooi Khoo; M. Panico; A. McDowell and H. R. Morris Mass Spectrometry of Carbohydrate containing Biopolymer Methods in Enzymology 230: 108-132 (1994)
I.Ciucanu; C. E. Costello Elimination of Oxidative Degradation during the per-O-Methylation of Carbohydrates J. Am. Chem. Soc. 125: 16213-16219 (2003)
I.Ciucanu Per-O-Methylation reaction of structural analysis of carbohydrates by mass spectrometry Analytica Chimica Acta 576: 147-155 (2006)
I.Ciucanu; R. Caprita Per-O-Methylation of neutral carbohydrates directly from aqueous samples for gas chromatography and mass spectrometry analysis Analytica Chimica Acta 585: 81-85 (2007)
Shubhakar, A., Kozak, R.P., Reiding, K.R., Royle, L., Spencer, D.I.R., Fernandes, D.L., Wuhrer, M. Automated High-Throughput Permethylation for Glycosylation Analysis of Biologics using MALDI- TOF-MS Analytical Chemistry. acs.analchem. 6b01639 (2016).
艾美捷科技是QA-Bio的中國代理商,為科研工作者提供優質的產品與服務。

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