linkstream2 microblog

Scientists uncover striking differences between mouse and human gene expression across a variety of tissues.
By Jyoti Madhusoodanan | November 17, 2014

http://www.the-scientist.com/?articles.view/articleNo/41453/title/Species-Specific/

QT:{{”
The results “go a little against the grain,” said bioinformatician Mark Gerstein of Yale University who was not involved in the study. “We might think that humans and mice are very similar [genetically], but when we compare their transcriptomes, they’re more different than we thought.”
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#SingleCell chromatin accessibility
http://www.nature.com/nature/journal/v523/n7561/full/nature14590.html >1.6k ATAC-seq expts; many on @ENCODE_NIH cell lines H1, GM12878 & K562

QT:{{”
While enriched with ENCODE biochemical annotations, much of the short-lived constrained sequences we identify are not detected by models optimized for wider pan-mammalian conservation. Constrained DNase 1 hypersensitivity sites, promoters and untranslated regions have been more evolutionarily stable than long noncoding RNA loci which have turned over especially rapidly. By contrast, protein coding sequence has been highly stable, with an estimated half-life of over a billion years (d1/2 = 2.1–5.0). From extrapolations we estimate that 8.2% (7.1–9.2%) of the human genome is presently subject to negative selection and thus is likely to be functional, while only 2.2% has maintained constraint in both human and mouse since these species diverged.
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http://journals.plos.org/plosgenetics/article?id=10.1371/journal.pgen.1004525

Segal cites: Measurements of 1000s of…designed promoters
http://www.nature.com/nbt/journal/v30/n6/full/nbt.2205.html Num. binding sites correlated w/ expr., for 1st few #ICSG2015

Segal cites: Determinants of TF binding outside the core binding site http://genome.cshlp.org/content/early/2015/06/05/gr.185033.114.abstract Large-scale measurement of affinity #ICSG2015

Comparative #genomics reveals insights into avian…#evolution http://www.sciencemag.org/content/346/6215/1311 Less repeats & dups in birds; woodpecker, an exception

Science 12 December 2014:
Vol. 346 no. 6215 pp. 1311-1320
DOI: 10.1126/science.1251385

Comparative genomics reveals insights into avian genome evolution and adaptation

Guojie Zhang1,2,*,†,
Cai Li1,3,*,
….
Avian Genome Consortium§,
Erich D. Jarvis20,†,
M. Thomas P. Gilbert3,56,†,
Jun Wang1,55,57,58,59,†

links: http://linkstream2.gerstein.info/tag/i0enc15

http://lectures.gersteinlab.org/summary/thoughts-on-ENCODE-annotations–final-i0enc15/

High-throughput functional testing of ENCODE segmentation
predictionsGenome Res. October 2014 24: 1595-1602; Published in Advance July 17, 2014,

that can be used for training predicted enhancers

http://genome.cshlp.org/content/24/10/1595.full.pdf

Multiplatform assessment of #transcriptome profiling [w.] RNAseq http://www.nature.com/nbt/journal/v32/n9/full/nbt.2972.html Nice plots showing great effect of poly-A selection

http://epigenomesportal.ca/ihec/grid.html