C-terminal sequencing is important for characterized the primary structure of protein and polypeptides and it must do for quality control of recombination protein drugs.A method of MALDI-TOF-TOF-MS with in source deca...C-terminal sequencing is important for characterized the primary structure of protein and polypeptides and it must do for quality control of recombination protein drugs.A method of MALDI-TOF-TOF-MS with in source decay(ISD) to measure C-terminal sequence of protein was established.This method was applied successfully to measure C-terminal sequence of Neuregulin,TP-Ⅱ,ubiquitin,and myoglobin,respectively and 10,24,24 and 36 amino acid residue of C-terminal were measured.展开更多
目的初步建立冠心病患者与健康对照的血小板蛋白质表达图谱,并鉴定其差异表达的蛋白质。方法选取冠心病患者9例和健康志愿者11名作为研究对象,抽取外周血,分离血小板并提取蛋白质。采用二维凝胶电泳技术分离并建立血小板蛋白质表达图谱,...目的初步建立冠心病患者与健康对照的血小板蛋白质表达图谱,并鉴定其差异表达的蛋白质。方法选取冠心病患者9例和健康志愿者11名作为研究对象,抽取外周血,分离血小板并提取蛋白质。采用二维凝胶电泳技术分离并建立血小板蛋白质表达图谱,以Image Master 2D platinum 5.0软件进行图谱分析,选取差异点进行基质辅助激光解析/电离-飞行时间质谱(Matrix-Assisted Laser Desorption/Ionization Time of Flight Mass Spectrometry,MALDI-TOF-TOF)分析,再采用Mascot软件搜索数据库鉴定差异表达蛋白质。结果 (1)初步建立了两组对象的血小板蛋白质表达图谱;(2)筛选出17个差异蛋白点,质谱成功鉴定7个:Plastin-2、Coronin-1A、Clusterin、Annexin A1、Chloride intracellular channel protein 1、Peroxiredoxin-6、Peroxiredoxin-2。结论血小板蛋白Plastin-2、Coronin-1A、Clusterin、Annexin A1、Peroxiredoxin-6、Peroxiredoxin-2在冠心病的发生发展中可能起到关键作用。展开更多
分析米曲霉AS3.951(沪酿3.042)种曲培养过程中不同培养时间的胞外蛋白谱,确定培养时间为48h时种曲达到蛋白鉴定要求;采用基质辅助激光解吸/电离飞行时间质谱(MALDI-TOF/TOFMS)技术检测鉴定出SDS-PAGE胶图上11个蛋白条带,通过比对数据库...分析米曲霉AS3.951(沪酿3.042)种曲培养过程中不同培养时间的胞外蛋白谱,确定培养时间为48h时种曲达到蛋白鉴定要求;采用基质辅助激光解吸/电离飞行时间质谱(MALDI-TOF/TOFMS)技术检测鉴定出SDS-PAGE胶图上11个蛋白条带,通过比对数据库鉴定得到8个蛋白,其中包括α-淀粉酶、淀粉糖化酶B、碱性蛋白酶、酸性蛋白酶等,与已在2009年Biosci Biotechnol Biochem期刊发表的《Analysis of extra cell ular proteins of Asper gillus oryzae grown on soy sauce koji》米曲霉AS3.951大曲的分泌蛋白谱共同提供了米曲霉沪酿AS3.951在酱油制曲过程中较完整的胞外分泌蛋白谱。展开更多
In order to explore the effect of electroacupuncture on rats with acute spinal injury,we established animal model of the spinal injury.Total proteins were extracted from spinal cord of normal rats,acute spinal injury ...In order to explore the effect of electroacupuncture on rats with acute spinal injury,we established animal model of the spinal injury.Total proteins were extracted from spinal cord of normal rats,acute spinal injury rats and acute spinal injury rat treated by electroacupuncture,and separated by 2-DE.10 differential expressed proteins were identified by the MALDI-TOF-TOF-MS with high mass accuracy,high mascot scores and high reliability.展开更多
文摘C-terminal sequencing is important for characterized the primary structure of protein and polypeptides and it must do for quality control of recombination protein drugs.A method of MALDI-TOF-TOF-MS with in source decay(ISD) to measure C-terminal sequence of protein was established.This method was applied successfully to measure C-terminal sequence of Neuregulin,TP-Ⅱ,ubiquitin,and myoglobin,respectively and 10,24,24 and 36 amino acid residue of C-terminal were measured.
文摘目的初步建立冠心病患者与健康对照的血小板蛋白质表达图谱,并鉴定其差异表达的蛋白质。方法选取冠心病患者9例和健康志愿者11名作为研究对象,抽取外周血,分离血小板并提取蛋白质。采用二维凝胶电泳技术分离并建立血小板蛋白质表达图谱,以Image Master 2D platinum 5.0软件进行图谱分析,选取差异点进行基质辅助激光解析/电离-飞行时间质谱(Matrix-Assisted Laser Desorption/Ionization Time of Flight Mass Spectrometry,MALDI-TOF-TOF)分析,再采用Mascot软件搜索数据库鉴定差异表达蛋白质。结果 (1)初步建立了两组对象的血小板蛋白质表达图谱;(2)筛选出17个差异蛋白点,质谱成功鉴定7个:Plastin-2、Coronin-1A、Clusterin、Annexin A1、Chloride intracellular channel protein 1、Peroxiredoxin-6、Peroxiredoxin-2。结论血小板蛋白Plastin-2、Coronin-1A、Clusterin、Annexin A1、Peroxiredoxin-6、Peroxiredoxin-2在冠心病的发生发展中可能起到关键作用。
文摘分析米曲霉AS3.951(沪酿3.042)种曲培养过程中不同培养时间的胞外蛋白谱,确定培养时间为48h时种曲达到蛋白鉴定要求;采用基质辅助激光解吸/电离飞行时间质谱(MALDI-TOF/TOFMS)技术检测鉴定出SDS-PAGE胶图上11个蛋白条带,通过比对数据库鉴定得到8个蛋白,其中包括α-淀粉酶、淀粉糖化酶B、碱性蛋白酶、酸性蛋白酶等,与已在2009年Biosci Biotechnol Biochem期刊发表的《Analysis of extra cell ular proteins of Asper gillus oryzae grown on soy sauce koji》米曲霉AS3.951大曲的分泌蛋白谱共同提供了米曲霉沪酿AS3.951在酱油制曲过程中较完整的胞外分泌蛋白谱。
文摘In order to explore the effect of electroacupuncture on rats with acute spinal injury,we established animal model of the spinal injury.Total proteins were extracted from spinal cord of normal rats,acute spinal injury rats and acute spinal injury rat treated by electroacupuncture,and separated by 2-DE.10 differential expressed proteins were identified by the MALDI-TOF-TOF-MS with high mass accuracy,high mascot scores and high reliability.
