1) de novo peptide sequencing
多肽从头测序
2) de novo sequencing
从头测序
1.
Phosphorylated peptides have been detected and phosphorylation modified sites have been identified very sensitively by combining immobilized metal affinity chromatography (IMAC) affinity capture with chemically assisted de novo sequencing followed 4-sulfophenyl isothiocyanate (SPITC) derivatization by MALDI-TOF mass spectrometry.
利用MALDI-TOF质谱结合磺基异硫氰酸苯酯(SPITC)化学辅助的从头测序(de novosequencing)方法,将用固相金属离子亲和色谱(immobilized metal affinity chromatography,IMAC)选择性地从混合物中亲和提取的磷酸肽进行磷酸化位点测定,该方法只有肽键断裂产生的带C端的碎片离子系列(y+离子系列)出现在质谱图中,图谱背景清晰,信噪比高,单纯的y+片段离子系列使得谱图解析变得非常容易,对于多磷酸化肽的磷酸化位点,不需借助于任何软件,只需简单地计算两峰之间的分子量之差即可确定。
3) de novo sequence
从头测序
1.
Two natural peptides whose sequences are partly unknown through Edman Degration were analyzed by de novo sequence method of nano ESI MSMS.
采用纳升喷雾(Nano)技术和碰撞诱导解离(CIDcollisioninducddissociation)方法,在电喷雾-四极杆-飞行时间质谱(ESI-Q-TOFelectrspectrometryionization-quadrupole-timeofflight)上,对两种序列部分未知的天然多肽进行从头测序(denovosequence),结果证明质谱的denovosequence可以方便有效的解决传统的Edman降解法测序中常见的实际问题,如末位残基的丢失,赖氨酸和亮氨酸难鉴定等,此方法的建立是对Edman降解测序法很好的补充。
2.
Its application would be founded on two way in this article: (1)on de novo sequence: two natural peptides whose sequences are partly unknown through Edman Degration were analysised by de novo sequence method of nano-ESI-MSMS.
(1)在天然多肽de novo测序中的应用:采用纳喷(Nano)技术和碰撞诱导解离(CID)方法,在电喷雾-四极杆-飞行时间质谱(ESI-Q-TOF)上,对两种序列部分未知的天然多肽进行从头测序(de novo sequence),结果证明质谱的de novo sequence可以方便有效的解决传统的Edman降解法测序中常见的实际问题,如末位残基的丢失,赖氨酸和亮氨酸难鉴定等,此方法的建立是对Edman降解测序法很好的补充。
4) peptide sequencing
多肽测序
5) peptide linker
多肽接头
1.
Objective: To construct the new phage display vector for effective display of the random peptide library, functional protein, functional protein mutant library and large protein (>300 amino acids), the flexible peptide linker and the multiple clone sites were introduced into the phagemid pCANTAB5X.
目的 :将柔性多肽接头和多克隆位点引入噬菌粒载体 pCANTAB5X中 ,构建适用于展示各种随机肽库、功能靶蛋白、功能靶蛋白变异体库和大分子量 (>30 0个氨基酸 )功能蛋白的新型噬菌粒展示载体。
6) peptide sequencing by ms/ms
多肽串联质谱测序
补充资料:从头测序
分子式:
CAS号:
性质:为要提供一段DNA的准确核苷酸序列,这一区段可长达数千碱基,而其序列从未经测定,因此要考虑从头测序,由于单套测序反应可能准确测定的靶DNA序列最长可达400碱基左右,因此可考虑将长约400碱基的靶DNA克隆进带有通用引物识别序列的质粒载体。这样每条链的全序可从两端用通用引物进行测序。
CAS号:
性质:为要提供一段DNA的准确核苷酸序列,这一区段可长达数千碱基,而其序列从未经测定,因此要考虑从头测序,由于单套测序反应可能准确测定的靶DNA序列最长可达400碱基左右,因此可考虑将长约400碱基的靶DNA克隆进带有通用引物识别序列的质粒载体。这样每条链的全序可从两端用通用引物进行测序。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条