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    RNA DATABASES

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    Rfam (http://rfam.sanger.ac.uk/)

    Rfam is a collection of RNA sequence families,

    represented by multiple sequence alignments and

    covariance models (CMs).

    The primary aim of Rfam is to annotate new

    members of known RNA families on nucleotide

    sequences, particularly complete genomes, using

    sensitive BLAST filters in combination with CMs.

    Rfam release 9.0 contains 603 families, each

    represented by a multiple sequence alignment ofknown and predicted representative members of

    the family, annotated with a consensus base-paired

    secondary structure

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    Seed alignment for the U12 spliceosomal RNA family.

    Secondary structure base pairs are encoded in the coloured bases in the

    alignment,

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    An example of the new secondary markups used by Rfam. The coronavirus

    30-UTR pseudo knot is shown (Rfam Accession RF00165sequence

    conservation (A), covariation (B), base-pair conservation also known as thefraction of canonical base pairs (C) and CM scores (D).)

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    (http://trnadb.bioinf.uni-leipzig.de/)

    The tRNAdb, with one of the largest numbers of

    entries among RNA databases, is not only an

    excellent model system for implementing and

    validating algorithms and processes of automated

    nucleic acid data transfer, but also for thedevelopment of novel sequence analysis tools.

    It also provides a basis for integration of structure-

    function relationships and additional information on

    evolution and phylogeny.

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    http://trna.nagahama-i-bio.ac.jp/

    This is the most accurate tRNA gene databasecurated manually by experts in the world

    This database is the outcome of the model projectto utilize the expertise of elderly researchers and topass it down to the next generation, which wascarried out at Nagahama Institute of Bio-Scienceand Technology. Specifically, the existing multiple

    tRNA gene search programs are used for automaticsearch of tRNA gene from almost all sequencedprokaryote genomes, and then the expertsmanually check those cases in which different

    results are generated by program.

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    RDP-II(Ribosomal Database Project)

    http://rdp.cme.msu.edu/

    The Ribosomal Database Project (RDP) providesribosome related data services to the scientificcommunity, including online data analysis, rRNA

    derived phylogenetic trees, and aligned andannotated rRNA sequences.

    The ribosomal RNA sequences in the RDP-IIalignments are mainly drawn from the majorsequence repositories(Gen Bank, EMBL Data

    Library and DDBJ)According to RDP 10.28, it consists of 2,110,258

    aligned and annotated 16S rRNA sequences.

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    TOOLS AVAILABLE

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    siRNAdb (http://sirna.sbc.su.se/)

    The siRNA database provides a gene-centric view

    of human siRNA experimental data, including

    siRNAs of known efficacy and siRNAs predicted to

    be of high efficacy by siSearch

    The database contains information about siRNA

    molecules from two sources: (I) siRNAs collected

    from the literature that have experimentally verified

    efficacy and (ii) siRNAs selected computationally to

    target the REFSEQ curated human gene set

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    (http://www-snorna.biotoul.fr/)

    snoRNA-LBME-db is a collection of human small

    nucleolar RNAs (snoRNAs) and Cajal body-specific

    RNAs (scaRNAs), that serve to guide modifications

    in rRNAs or snRNAs.

    The database can be search by sno/scaRNA name

    or Accession number, or by the position of the

    modified nucleotide in rRNA/snRNA sequence.

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    (http://www.arb-silva.de/)

    SILVA provides comprehensive, quality checked

    and regularly updated datasets of aligned small

    (16S/18S, SSU) and large subunit (23S/28S, LSU)

    ribosomal RNA (rRNA) sequences for all three

    domains of life (Bacteria, Archaea and Eukarya).

    SILVA are the official databases of the software

    package ARB.

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    This database is a comprehensive

    mammalian noncoding RNA database

    (RNAdb) containing sequences and

    annotations for tens of thousands ofnoncoding RNAs.

    These include a wide range of microRNAs,

    small nucleolar RNAs and larger mRNA-like

    ncRNAs. Some of these have documentedfunctions and/or expression patterns, but

    the majority remains of unclear significance

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    The RNA modification database,

    RNAMDB

    http://rna-mdb.cas.albany.edu/RNAmods/

    The RNA modification database provides a

    comprehensive listing of post

    transcriptionally modified nucleosides fromRNA .

    The RNAMDB provides a user-friendly,

    searchable interface that directs the user to

    a detailed information page for each

    database entry

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    RNA Sequence Database List

    A list of RNA sequence databases are given in thefollowing site.

    http://www.oxfordjournals.org/nar/database/cat/2

    EXAMPLES:-

    16S and 23S Ribosomal RNA Mutation Database

    HuSiDa - Human siRNA database

    GtRDB - Genomic tRNA Database The Small Subunit rRNA Modification Database

    3D rRNA modification maps

    siRNAdb

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    References

    Nucleic Acids Research-OXOFORD journal

    Rfam: an RNA family database, Nucleic Acids Research, 2003, Vol.

    31, No. 1 439441,DOI: 10.1093/nar/gkg006

    tRNAdb 2009: compilation of tRNA sequences and tRNA genes,

    Nucleic Acids Research, 2009, Vol. 37, Database issue D159

    D162,doi:10.1093/nar/gkn772

    Rfam: updates to the RNA families database, D136D140 Nucleic

    Acids Research, 2009, Vol. 37, Database issue,

    doi:10.1093/nar/gkn766