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
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
利用 6mol LHCl沉淀枯草芽孢杆菌B2菌株的去细胞培养液 ,甲醇抽提获得脂肽类抗生素粗提物 ,过SephadexLH 2 0层析柱获得粗纯化物 ,经MALDI TOF MS检测表明B2菌株仅含有表面活性素一种脂肽类抗生素。利用HPLCSMARTSYSTEM ,将粗纯化物过 ...利用 6mol LHCl沉淀枯草芽孢杆菌B2菌株的去细胞培养液 ,甲醇抽提获得脂肽类抗生素粗提物 ,过SephadexLH 2 0层析柱获得粗纯化物 ,经MALDI TOF MS检测表明B2菌株仅含有表面活性素一种脂肽类抗生素。利用HPLCSMARTSYSTEM ,将粗纯化物过 μRPCC2 C1 8层析柱对表面活性素变异体进行分离后获得纯化物。经MALDI TOF PSD MS对纯化物的结构分析表明 ,B2菌株的表面活性素变异体由 1 3、1 4和 1 5个碳原子的脂肪酸链以及L Glu L Leu D Leu L Val L Asp D Leu L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.
文摘利用 6mol LHCl沉淀枯草芽孢杆菌B2菌株的去细胞培养液 ,甲醇抽提获得脂肽类抗生素粗提物 ,过SephadexLH 2 0层析柱获得粗纯化物 ,经MALDI TOF MS检测表明B2菌株仅含有表面活性素一种脂肽类抗生素。利用HPLCSMARTSYSTEM ,将粗纯化物过 μRPCC2 C1 8层析柱对表面活性素变异体进行分离后获得纯化物。经MALDI TOF PSD MS对纯化物的结构分析表明 ,B2菌株的表面活性素变异体由 1 3、1 4和 1 5个碳原子的脂肪酸链以及L Glu L Leu D Leu L Val L Asp D Leu L