ComprehensiveidentificationofnovelproteinsandNglycosylationsites七
Data analysisTandem mass spectra were retrieved using Xcalibur (version 2.2, Thermo Fisher Scientific) and AnalystTF (version 1.6, AB SCIEX) software. The MS/MS spectra files were searched against the sequence database (72,672 entries) using in-house PEAKS software (version 6.0, Bioinformatics Solutions Inc.). The database was generated from protein sequences of Apis (downloaded April 2012),augmented with ......阅读全文
2010全国质谱大会大会报告（二）
美国北卡大学Chaple Hill医学院 Chen, Xian（陈先）教授 来自美国北卡大学Chaple Hill医学院的 Chen, Xian（陈先）教授，做了题为“Systems Dissection of Signal Transduction by Using Quantitative P
Isoelectric－Focussing－of－Membrane－Proteins－by－Slab－Gel－Method
REFERENCE: Ames, G.F.L. and Nikaido, H. 1976. Biochemistry. 15:616-623.MATERIALS:Gel solution:1.05 gacrylamide0.032 gbis-acrylamide8.25 gurea6.5 mldis
The－role－of－FYVEfinger－proteins－in－vesicle－transport
Eukaryotic cells take up constituents of the extra-cellular environment and regulate the cell-surface level of membrane proteins via a recycling syste
GProtein－Signaling－Through－Tubby－Proteins
The tubby gene product is expressed in the brain and has been implicated by mouse genetics in obesity and other disorders such as blindness. Structura
SemiQuantitative－Measurement－of－Proteins－by－Dot－Blotting
Purpose...Concentration of proteins in a crude preparations (such as culture sup) can be estimated semi-quantitatively by using "Dot Blot" method if y
Ingel－digestion－of－proteins－for－peptide－fingerprint－mapping
Polyacrylamide gel electrophoresis is a widely used technique to separate proteins from biological samples. Moreover, the development of two-dimension
利用人工组合转录因子对人类基因组扫描2
Figure 5: Regulation of CDH5 by TFZFs in several human cancer cell lines.Blue, cells infected with a pMX construct containing the DNA binding domain o
Authentication－of－Medicinal－Plants－by－SNPBased－Multiplex－PCR
Highly variable intergenic spacer and intron regions from nuclear and cytoplasmic DNA have been used for species identification. Noncoding internal
Gene－Structure－Annotation－at－PlantGDB
The accurate identification of exons and introns that comprise a complete plant gene structure can be a time-consuming and challenging task. Novel
中国学者Nature－Biotechnology发表蛋白质组学分析新技术
来自中科院计算技术研究所的研究人员发表了题为“Comprehensive identification of peptides in tandem mass spectra using an efficient open search engine”的文章，公布了新一代开放式搜索算法Open-p
一种新方法评定在培养细胞中siRNA效率
A novel approach for evaluating the efficiency of siRNAs on protein levels in cultured cells.Wu W, Hodges E, Redelius J, Hoog C.Nucleic Acids Res. 200
一种新方法评定在培养细胞中siRNA效率
A novel approach for evaluating the efficiency of siRNAs on protein levels in cultured cells.Wu W, Hodges E, Redelius J, Hoog C.Nucleic Acids Res. 200
Isolation－of－Cell－Wall－Proteins－from－Medicago－sativa－Stems
Plant cell walls are highly dynamic and chemically active components of plant cells. Cell walls consist primarily of polysaccharides, with protein
目标蛋白(target－proteins)粗提方法1
狭义来讲，提取指制备物与细胞固体成分或其它结合成分的分离，由固相转入液相或从细胞内生理状态转入外界特定溶液环境的过程，即分离前期被提取物从破碎的细胞中释放出来的过程。如果被提取物程固相或与固体结合，提取时由固相转入液相，常称为固液萃取；如果被提取物已经呈液相存在，提取时由一液相转入转入另一互不相溶的
Edman－Sequencing－of－Proteins－from－2D－Gels
The Western blotting/sequencing technique using polyvinylidene difluoride (PVDF) membrane is one of the most popular technique for Edman sequencin
目标蛋白(target－proteins)粗提方法2
4）去垢剂去垢剂(表面活性剂)是一类即具有亲水基又具有疏水基的物质，一般具有乳化、分散、和增溶作用，可分阴离子、阳离子和中性去垢剂等多种类型，中性去垢剂在蛋白提取钟应用的较多。A．中性去垢剂 又称非离子表面活性剂，对蛋白质的变性作用影响较少，宜于蛋白质或酶提取之用。一般市售中性去垢剂有聚乙二醇类
目标蛋白(target－proteins)粗提方法4
第四节 提取时的保护性措施提取一些具有生理活性的物质时，除了考虑被提取物溶解度外，还应考虑被提取物活性的保护。对于一些生物大分子如蛋白质、酶和核酸来说，主要措施有如下几点；1．采用缓冲系统 防止提取过程中某些酸碱基团的解离，造成溶液中PH值变化幅度过大，导致某些活性物质的变性、或由于PH变化影响
Phosphoamino－acid－analysis－of－nonTCA－precipitable－proteins
Phosphoamino acid analysis of non-TCA precipitable proteins1. Cut out gel slice, incubate 60 min with 1 ml 5.7 M HCl @ 110oC in 13 x 100 mm screw cap
Preparation－of－Bacterial－Proteins－for－Analysis－by－2DPAGE
The following protocol has been developed for preparing soluble bacterial proteins in a form suitable for analysis by 2D-PAGE. The procedure was princ
InGel－Digestion－of－Proteins－Separated－byPolyacrylamide－Gel－Electrophoresis
1. Excision of protein bands (spots) from polyacrylamide gelsRinse the gloves you use with water to avoid traces of dust in your sample.Rinse the gel
目标蛋白(target－proteins)粗提方法3
3）pH值 一般在被提取蛋白质的等电点的两侧，碱性蛋白用稀酸提取、酸性蛋白用稀碱提取。在某些情况下，为了破坏所分离的蛋白质与其他杂质的静电结合，选择偏酸（pH3-6）或偏碱（pH10-11），可以使离子键破坏而获得单一的蛋白成分。4）温度 提取时通常要求低温操作。只有对某些耐高温的蛋白质或酶（如胃蛋
Sprouty－regulation－of－tyrosine－kinase－signals
Four different members of the Sprouty protein family block the cellular proliferation and differentiation induced by several different growth factors,
中国质谱学会－“质谱青年奖”结果公告－Cell作者黄光明入选
中国质谱学会“质谱青年奖”评选结果公告自“质谱青年奖”通知发布后，得到了质谱青年学者的广泛关注，在受理截止日期前，共收到了16份有效申请。中国质谱学会（中国物理学会质谱分会）组织专家对申请人的申请材料进行了评审，现将评审结果公示如下：获奖预备人选：中国科学技术大学 黄光明 教授获奖成果代表作：1.M
Regulation－of－BAD－phosphorylation
The function of the pro-apoptotic molecule BAD is regulated by phosphorylation of three sites (ser 112,136 and 155). Phosphorylation at these sites re
酵母双杂交系统
· Yeast Two-Hybrid System (Finley Lab)This is one of the most comprehensive and detailed guide to yeast two-hybrid system technique with intro
SELDI蛋白芯片技术在肿瘤早期诊断中研究进展（三）
SELDI蛋白芯片技术可有效筛选血清中特异性蛋白标志物，为建立卵巢癌的诊断模型提供可靠的技术平台。 2.4 乳腺癌 CA153用于乳腺癌的检测，其灵敏度23％，特异性69％，只能用于监测治疗效果和复发情况。LI等[23]对169例血清进行检测，其中乳腺
2024ASMS－美国质谱学会LECO力可公司质谱新技术集锦
美国LECO力可公司在ASMS美国质谱学会上展示了Analytica 2024最新发布的新一代飞行时间质谱BTX。全二维气相色谱同时推出第四种调制器：Paradigm Shift范式转换，首家实现了绝对分流精度的TOF定性同时FID定量，数据对其分流比不受程序升温影响。BTX 4D GCxGC-T
Expression－Library－Screening－(Procaryotic)－Using－APFusion－Proteins
Outline:Bacteriophage lambda is a linear double stranded DNA, approximately 50 kB in size. The two sticky ends help the phage to recircularize after e
Influence－of－Ras－and－Rho－proteins－on－G1－to－S－Transition
The cell cycle transition from G1 to S phase is a key regulatory point in the cell cycle. This transition is regulated by the checkpoint kinase cdk2 t
Overview－of－telomerase－protein－component－gene－hTert－Transcriptional
Telomerase is an enzyme which replicates the terminal sequences of eukaryotic chromosomes, namely the telomeres. Cells which have an unlimited replica