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2014 ; 30
(12
): i274-82
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BlockClust: efficient clustering and classification of non-coding RNAs from short
read RNA-seq profiles
#MMPMID24931994
Videm P
; Rose D
; Costa F
; Backofen R
Bioinformatics
2014[Jun]; 30
(12
): i274-82
PMID24931994
show ga
SUMMARY: Non-coding RNAs (ncRNAs) play a vital role in many cellular processes
such as RNA splicing, translation, gene regulation. However the vast majority of
ncRNAs still have no functional annotation. One prominent approach for putative
function assignment is clustering of transcripts according to sequence and
secondary structure. However sequence information is changed by
post-transcriptional modifications, and secondary structure is only a proxy for
the true 3D conformation of the RNA polymer. A different type of information that
does not suffer from these issues and that can be used for the detection of RNA
classes, is the pattern of processing and its traces in small RNA-seq reads data.
Here we introduce BlockClust, an efficient approach to detect transcripts with
similar processing patterns. We propose a novel way to encode expression profiles
in compact discrete structures, which can then be processed using fast
graph-kernel techniques. We perform both unsupervised clustering and develop
family specific discriminative models; finally we show how the proposed approach
is scalable, accurate and robust across different organisms, tissues and cell
lines. AVAILABILITY: The whole BlockClust galaxy workflow including all tool
dependencies is available at
http://toolshed.g2.bx.psu.edu/view/rnateam/blockclust_workflow.
|Artificial Intelligence
[MESH]
|Cluster Analysis
[MESH]
|Gene Expression Profiling/*methods
[MESH]
|High-Throughput Nucleotide Sequencing
[MESH]
|Humans
[MESH]
|Molecular Sequence Annotation
[MESH]
|RNA, Small Untranslated/chemistry/*classification/metabolism
[MESH]