第一部分:
1.RNA On
RNA本体联盟(RNA On
1. 整合所有的RNA序列和结构数据库
2. 创建强大的软件平台
3. 强大科学家队伍将多样的信息数据和数据的积累转化成生物学的应用型知识推动RNA科学的进步
为了达到这些目标就是关注于ROC之间RNA科学家的相互交流与合作,一起面对面的频繁多讨论,辩论以及解决一些概念性的问题。因此一些重要学术交流会显
得十分的重要,这些会议能够在RNA研究的不同层次和水平上创建研究的方向。ROC希望通过整个分散的信息数据资源,研发出整合的软件以及合作交流工具来
扩大以及增强bench科学家对试验数据的阐释,计算机及其基因组学者对基因组数据的阐释。RCO通过会议及其网络平台一起紧密工作在一起,用Gene
On
2.Gene On
Gene On
3.On
a.On
b.展示和共享社团知识
c.展示数据库信息
d.支持跨越多个数据库智能查询
e.enable reuse of domain knowledge
f.support automated reasoning and inference oer domain knowledge.
4 RNA on
作为RNA领域新兴的概念,主要知识领域如下:
1 RNA 序列信息(1D): coding and noncoding, and their identification in genomes (to be incorporated within the Sequence On
2 RNA 次级结构以及Watson-Crick 碱基配对
3 RNA 3D 结构和基序: backbone conformations, base stacking, and tertiary interactions.
4 RNA同源序列的比对.
5 RNA比对与3D结构之间的关系.
6 RNA–RNA, RNA–protein, and RNA–ligand (metabolite,drug, metal and other ion, and water) interactions.
7 RNA conformational changes and dynamics of functional significance.
8 RNA 分子生物学(RNA加工,成熟以及剪接等等).
9 Biochemical and biophysical experimental da
10 RNA as regulator of biological networks and pathways.
5.RNA数据库的整合
见图
RNA Bioinformatics-RNA 信息学工具
1. Functional_RNAs
a. Non-Coding RNA database
http://biobases.ibch.poznan.pl/ncRNA/
Non-translatable RNA transcripts that appear to work at the RNA leel.
b. Rfam
http://www.sanger.ac.uk/Software/Rfam/
Database of structure-annotated multiple sequence alignments, coariance
models and family annotation for a number of non-coding RNA families
c. SCOR
http://scor.berkeley.edu/
The Structural Classification of RNA (SCOR) is a database designed to
proide a comprehensie perspectie and understanding of RNA motif
structure, function, tertiary interactions and their relationships
d. tRNAscan-SE
http://www.genetics.wustl.edu/eddy/tRNAscan-SE/
tRNAscan-SE allows you to search for tRNA genes in genomic sequence. (site hosted by Eddy Lab at WashU)
2. RNA_General_Links_and_Information
a. NDB
http://ndbserer.rutgers.edu/
NDB (Nucleic Acid Database) is a repository of three-dimensional structural information about nucleic acids.
b. RNA folding Serers
http://kinefold.u-strasbg.fr/rna.html
List of RNA folding serers and related web sites maintained by Here Isambert.
c. RNA Informatics Links
http://www-lbit.iro.umontreal.ca/RNA_Links/RNA.shtml
An exhaustie list of RNA links; from the experts in the Major lab.
d. RNAbase
http://www.rnabase.org/
RNAbase is a searchable and annotated database of all publicly aailable RNA structures.
e. The RNA World
http://www.imb-jena.de/RNA.html
An RNA resource hub.
f. The Zuker Group
http://www.bioinfo.rpi.edu/applications/mfold/
Algorithms, thermodynamics and databases for RNA secondary structure.
RNA_Motif_Search_and_Comparison
a. Riboswitch finder
http://riboswitch.bioapps.biozentrum.uni-wuerzburg.de/serer.html
RNA motif search program that identifies RNA motifs called riboswitches
which are metabolic binding domains in mRNA that regulate gene
expr
b. RNABOB
http://www.genetics.wustl.edu/eddy/software/#rnabob
Fast RNA motif/pattern searcher; from the authors: If you re looking
for an RNA motif that fits a hard consensus pattern -- a la PROSITE
patterns, but with base-pairing -- you might check out RNABOB; not a
Web-tool; based on RNAMOT.
c. RNAMOT
http://www.esil.uni-mrs.fr/~dgaut/download/
RNA motif search program; not a Web-tool.
d. Transterm UTR Motif Search
http://guineere.otago.ac.nz/transterm.html
Transterm is an interactie database proiding access to RNA sequences
and their associated motifs. The RNA sequences are deried from all gene
sequence da
e. http://www.ambion.com/techlib/
Company web site with ery good technical resources including an
excellent links page, summaries of recent papers on RNA-related topics,
and free access to reiew articles and web features on RNA-related
research topics.
http://www.ncbi.nlm.nih.go/
http://www.ebi.ac.uk/embl/index.html
1. BLAST
Basic Local Alignment Search Tool (BLAST) finds regions of local
similarity between sequences. The program compares nucleotide or
protein sequences to sequence databases and calculates the statistical
significance of matches. BLAST can be used to infer functional and
eolutionary relationships between sequences as well as help identify
members of gene families.
2. EBI Tools
EBI Tools is a project that aims to proide programmatic access to the
arious databases and retrieal and analysis serices that the European
Bioinformatics Institute (EBI) proides through Simple Object Access
Protocol (SOAP) and other related web serice technologies.
3. EMBOSS
Dierse suite of tools for sequence analysis; many programs analagous to GCG; context-sensitie help for each tool.
4. Entrez
NCBI information retrieal system, including GenBank, MMDB (structures), genomes, population sets, OMIM, taxonomy and PubMed.
5. FeatureExtract
The FeatureExtract serer extracts sequence and feature annotations,
such as intron/exon structure, from GenBank entries and other GenBank
format files.
6. GeneLynx
A portal to the human genome. Query by text or BLAST, to access heaps
of info from primary and secondary databases of genomic resources,
transcripts, protein sequences, function, associated diseases,
homologs, ests.
7. PubCrawler
It goes to the library. You go to the pub; receie email alerts for
current contents of PubMed and GenBank; e.g. use accession number of
htg record as query to receie sequence updates (as the ersion number
changes).
8. Ribosomal Database Project
Highly curated database of aligned and annotated rRNA sequences with accompanying phylogenies; da
9. SeqHound
Seqhound is a sequence retrieal system that proides access to
biological sequence, structure and functional annotation da
10. WU BLAST
Washington Uniersity Basic Local Alignment Search Tool
a. CARNAC
http://bioinfo.lifl.fr/carnac
Serer which predicts consered secondary structure elements of
homologous RNAs. The input of a set of RNA sequences are not required
to be preiously aligned.
b. DEQOR
http://cluster-1.mpi-cbg.de/Deqor/deqor.html
Tool which aids in the design and quality control of small interfering
RNAs (siRNAs) for RNA interference (RNAi) and gene silencing. It
ealuates the inhibitory potency of potential siRNA sequences as well as
identifying gene regions that hae a high sil
c. ERPIN
http://tagc.uni-mrs.fr/erpin/
ERPIN (Easy RNA Pro
d. wustl
http://cic.cs.wustl.edu/RNA/
Serer which proides iterated loop matching and maximum weighted
matching algorithms for pseudoknot containing RNA secondary structure
prediction. Algorithms can apply thermodynamic and comparatie
information, and thus can be used for either aligned
e. Kinefold
http://kinefold.u-strasbg.fr/
Kinefold calculates (and animates) the folding kinetics of RNA sequences including pseudoknots.
f. Mfold
http://www.bioinfo.rpi.edu/applications/mfold/old/rna/
Predict RNA secondary structure from sequence; does not predict pseudoknots
g.MolMoDB
http://molmodb.org/
The Database of Macromolecular Moements (MolMoD contains a collection
of animated protein and RNA structures to assist in the exploration of
macromolecular flexibility. Software for structure analysis is also
aailable.
h. MOLPROBITY
http://kinemage.biochem.duke.edu/molprobity/main.php?use_king=1
MOLPROBITY is a structure analysis and alidation program that can
calculate and display steric, H-bonding, and an der Waals interactions
for known structures of proteins, nucleic acids, and complexes.
i. PKNOTS
http://www.genetics.wustl.edu/eddy/software/#pk
Predict pseudoknot structures in RNA sequence; source co
j. RDfolder
http://rna.cbi.pku.edu.cn:1977/rna/index.php
A RNA secondary structure prediction program which implements two
methods, on
f. RNAfold
http://www.tbi.uniie.ac.at/cgi-bin/RNAfold.cgi
Predict RNA secondary structure from sequence; note sequence length limit.
g. RNAsoft
http://www.rnasoft.ca/
Software for RNA/DNA secondary structure prediction and design
h. Sfold
http://sfold.wadsworth.org
Serer with three tools for the rational design of small interfering
RNAs (Sirna), antisense oligonucleotides (Soligo), and trans-cleaing
ribozymes (Sribo). A fourth tool, Srna, returns output including
general folding features.
i. siDirect
http://design.RNAi.jp/
Serer for computing small interfering RNA (siRNA) sequences which are
best suited for mammalian RNA interference (RNAi). The site accepts a
sequence as input and returns a list of siRNA candidates.
j. siRNA Selection Serer
http://jura.wi.mit.edu/bioc/siRNA
Serer aiding the design of short interfering RNAs (siRNAs) by proiding
information on stability, SNPs and specificity of the a potential siRNA.
k. siRNAdb
http://sirna.cgb.ki.se/
This resource includes siSearch, AOSearch, and a siRNAdb which proides
a platform for mining an siRNA database, and searching for non-specific
matches to your siRNA (small interfering RNAs).
l. siRNAdb
http://smi-web.stanford.edu/projects/helix/sstructiew/
RNA secondary structure iewer applet; must be integrated into web page
to be implemented; can link to multiple computational backends.
M.TROD
http://www.cellbio.unige.ch/RNAi.html
T7 RNAi Oligo Designer (TROD) aids in the design of DNA
oligonucleotides for short interfering RNA (siRNA) synthesis with T7
RNA polymerase.It takes an input of a cDNA sequence and outputs a list
of DNA oligos for ordering.
N.ienna RNA Package
http://www.tbi.uniie.ac.at/~io/RNA/
Comprises a C codelibrary and seeral stand-alone programs for the prediction and comparison of RNA secondary structures.
a. Ribosome Images (Wadsworth Center Microscope 3D Database)
http://www.wadsworth.org/spider_3d/home_page.html
b. RNase P 3D models
http://jwbrown.mbio.ncsu.edu/RNaseP/RNA/threeD/threeD.html
RNase P 3D models
c. SCOR: Structural Classification of RNA
http://scor.lbl.go/
SCOR: Structural Classification of RNA
d. The Nucleic Acid Database (ND
http://ndbserer.rutgers.edu/NDB/
6.UTR bioinformatics
a.UTR Blast
http://www.ba.itb.cnr.it/BIG/Blast/BlastUTR.html
UTRBlast is an on
b.UTR Home
http://www.ba.itb.cnr.it/BIG/UTRHome/
UTR Home. A collection of UTR resources and on
c. UTRdb
http://www.ba.itb.cnr.it/srs7bin/cgi-bin/wgetz?-page+top
UTRdb. A database of UTR sequences. Find your UTR RNA or DNA sequence of interest.
d. UTRScan UTR Scan
http://www.ba.itb.cnr.it/BIG/UTRScan/
UTRScan UTR Scan.The program UTRscan looks for UTR functional elements
by searching through user submitted sequence da
e. UTRSite
http://www2.ba.itb.cnr.it/UTRSite/
UTRSite is a collection of functional sequence patterns located in 5' or 3' UTR sequences.
吴佰霖 wrote:
目前miRAN和ncRNA都是一个热点,大家对一个序列怎么分析为ncRNA有什么好的流程吗
谢谢了!!!!!!!!!!!!!!!!!!!!!!!!!
xiaohe0377 wrote:
楼主,你好!
我们都知道RNAi已经成为当今生物学界研究基因功能等首选的工具!!但是我们可否使用该技术来研究ncRNA的功能,特别是一些长链ncRNA,他们的结构和功能非常复杂,可以说迄今,很少有ncRNA的作用机制和功能被人们完全揭示的。
比如,我们打算使用siRNA抑制在癌症中特异性高表达的ncRNA(如H19等),可否会发挥抑癌作用。
谢谢!!
redkindszhusl wrote:
基因沉默战友,你的帖子太好了,给你投上一票。我想请教一下,不同物种同类非编码RNA序列中AU和GC含量的差异与物种进化间有没有联系,能不能指点一下!(我是这方面的新手,最好能提供点文献)谢谢在先!
identified in AT-rich hyperthermophiles.part2.rar (104.35k)
RNA base compostion.rar (162.04k)
utionary Discrimination of Mammalian Consered.pdf (197.26k)
ncRNA 研究的tilling array design
(缩略图,点击图片链接看原图)
学习中。。。。。。。。。
redkindszhusl wrote:
多谢沉默基因战友,你提供的文献很有用,特别是两篇有关GC含量方面的。不知道可否对miRNA进行进化树的构建或密码子方面的探索?再次感谢!!
多谢基因沉默高手指点,太感谢了,后面遇到问题再请教!
在RNAi中mRNA断裂的补充说明:
RT-PCR对siRNA 沉默效果的评价
虽然通过siRNA处理,整个基因的mRNA都受到影响,围绕
siRNA周围的区域是受沉默影响最大的区域。就时效性研究来看,编码区是siRNA效应的最稳定区,非翻译区相对稳定性较弱。这与断裂位点和非翻译区之
间的距离有关。因此引物最好选择在编码区内的任何位点,为了最大的灵敏度推荐使用围绕着siRNA位点进行设计。为了比较不同的siRNA针对不同的基因
的相对沉默效果,最好在选择引物的时候用对于每个目的基因而言选择与siRNA靶点距离一致的引物更加有可比性!
还没开工,对沉默兄敬仰!
请问,siRNA的设计,是由生物公司设计好还是实验者本人设计好呢,那些在网站上应用设计软件设计的siRNA的可靠性如何?另外,向您请教BLAST进行序列比对的方法,尤其是结果分析方面。我是新手,刚刚接触RNAi,还请多多指导。万分感谢!
第二部分Mapping miRNA genes
1.miRNA Map 是一个整合的数据,被开发用来存储已知miRNA 基因,假定的miRNA基因,已知的miRNA targets和假定的miRNA target.(Hsu et al 2006).
2.已知的miRNA基因,来自人,小鼠,大鼠以及狗的miRNA基因,可以从miRNAase获得,试验已经证实的miRNA targets在文献中可以获得。
3.假定的miroRNA precursors可以通过RNAz来鉴定,RNAz是一个序列比较分析的工具
4.假定的miRNA基因的成熟miRNA可以通过mmiRNA来确认,mmiRNA使用机器智能学习的方法
5.miRanda是一个用来在四种哺乳动物基因组中的基因的3' UTR区域的保守区预计miRNA靶点的工具
6.miRNA map也提供已知的miRNA的表达图谱,跨物种的比较,基因的注释以及与别的生物数据库进行交叉检索
7.文本和图片的网页交互性界面在http://mirnamap.mbc.nctu.edu.tw/提供了方便的检索功能
gndtyhj wrote:
请问,siRNA的设计,是由生物公司设计好还是实验者本人设计好呢,那些在网站上应用设计软件设计的siRNA的可靠性如何?另外,向您请教BLAST进行序列比对的方法,尤其是结果分析方面。我是新手,刚刚接触RNAi,还请多多指导。万分感谢!
收益非浅!
确实收获不少!
Eolutionary rates ary among rRNA structural elements
Nucleic Acids Research, 2007, ol. 35, No. 10 3339-3354
S. Smit, J. Widmann and R. Knight*
Department of Chemistry and Biochemistry, Uniersity of Colorado, Boulder, CO 80309
Understanding patterns of rRNA eolution is critical for a number of
fields, including structure prediction and phylogeny. The standard
model of RNA eolution is that compensatory mutations in stems make up
the bulk of the changes between homologous sequences, while unpaired
regions are relatiely homogeneous. We show that considerable
heterogeneity exists in the relatie rates of eolution of different
secondary structure categories (stems, loops, bulges, etc.) within the
rRNA, and that in eukaryotes, loops actually eole much faster than
stems. Both rates of eolution and abundance of different structural
categories ary with distance from functionally imp
download link:
http://nar.oxfordjournals.org/cgi/reprint/35/10/3339?ck=nck
Nucleic Acids Research, 2007, ol. 35, No. 9 3100-3108
Karin Lagesen1,2,*, Peter Hallin3, Einar Andreas R?dland1,2,4,5,
Hans-Henrik St?rfeldt3, Torbj?rn Rognes1,2,4 and Daid W. Ussery1,2,3
The publication of a complete genome sequence is usually accompanied by
annotations of its genes. In contrast to protein coding genes, genes
for ribosomal RNA (rRNA) are often poorly or inconsistently annotated.
This makes comparatie studies based on rRNA genes difficult. We hae
therefore created computational predictors for the major rRNA species
from all kingdoms of life and compiled them into a program called
RNAmmer. The program uses hidden Marko models trained on da
http://nar.oxfordjournals.org/cgi/reprint/gkm1601
M. Kenzelmann*??, S. Maertens?, M. Hergenhahn§?, S. Kueffer?, A.
Hotz-Wagenblatt , L. Li**, S. Wang?, C. Ittrich??,T. Lemberger*, R.
Arribas??, S. Jonnakuty , M. C. Hollstein§, W. Schmid*, N. Gretz**, H.
J. Gro¨ ne?, and G. Schu¨ tz*
6164–6169 PNAS April 10, 2007 ol. 104 no. 15
Current methods to analyze gene expr
applied to the study of renal ischemia reperfusion injury,
demonstrating its applicability for whole organs in io. Combined with
da
http://www.pnas.org/cgi/reprint/104/15/6164
Nucleic Acids Research, 2007, ol. 35, No. 9 2885–2892
Jan Kru¨ tzfeldt1,y, Satoru Kuwajima1, Rai Braich2, Kallanthottathil G. Rajee2,
John Pena3, Thomas Tuschl3, Muthiah Manoharan2 and Markus Stoffel1,
MicroRNAs (miRNAs) are an abundant class of 20–23-nt long regulators of
gene expr
http://www.pubmedcentral.nih.go/articlerender.fcgi?artid=1888827
zhangyanlhow wrote:
我准备做RNA干扰的裸鼠实验,已经构建了质粒载体并瞬时转染了细胞
后接种了裸鼠(曾经想用G418筛选稳定株的但没有成功),现在我们老师又让
我用质粒shRNA直接给长瘤子的裸鼠瘤内注射呢,还让我再合成个siRNA片段
也瘤内注射一下,我查了文献还能腹腔、尾静脉注射,我不知道是构建质粒
载体好还是用siRNA片段用于裸鼠好,有没有必要siRNA和shRNA都做呢?还是
做一种就行?直接转染细胞接种裸鼠、瘤内注射、腹腔注射、尾静脉注射到
底哪种方法好呢?
非常感谢基因沉默的解答,综合考虑了一下,shRNA比siRNA稳定一些,我现在打算只用shRNA质粒然后用不同的方法注射比较一下效果如何算 了,我是怕shRNA和siRNA两个都做意义不大,而且挺费钱的,再和我们老板商量一下吧,以后遇到问题还得麻烦你了,再次感谢
bired wrote:
还没开工,对沉默兄敬仰!
Non-coding RNAs: Small Inhibitory-RNA ( siRNA; RNAi; microRNA; miRNA)
http://www.ncbi.nlm.nih.go/Class/NAWBIS/Modules/RNA/rna13a.html
Animations of Inhibitory RNA Act
Nature Reiews - A high quality moie describing inhibitory RNA eents and mechanisms.
http://www.nature.com/focus/rnai/animations/animation/animation.htm
Nature Reiews Genetics - A flash animation [Nature Reiews Genetics 2;
110-119 (2001) "Post-Transcriptional Gene Silencing by Double-Stranded
RNA." Figure 1.]
http://www.nature.com/nrg/journal/2/n2/animation/nrg0201_110a_swf_MEDIA1.html
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