linkstream2 microblog

QT:{{”

“The oestrogen receptor achieves this by binding substances that contain a chemical structure called an aromatized A ring. Because oestrogens are the only steroid hormones to have such a ring, that criterion was enough to ensure that the receptor bound only oestrogens for many millions of years. Until, that is, the chemical industry started pumping out hundreds of substances containing such aromatized rings, which the oestrogen receptor unwittingly bound. “The endocrine disrupters are taking advantage, unfortunately, of the promiscuity that is the result of the evolutionary history of receptors,” Thornton says.”
“}}

Prehistoric proteins: Raising the dead
http://www.nature.com/news/prehistoric-proteins-raising-the-dead-1.10261

Alternative evolutionary histories in the sequence space of an ancient protein https://www.Nature.com/articles/nature23902 Great viz of different potential but not necessarily realized evolutionary trajectories. Quite relevant for molecular #evolution & #pseudogenes

lncRNA-mediated sponge regulatory network in prostate cancer http://www.nature.com/ncomms/2016/160315/ncomms10982/full/ncomms10982.html Few explicitly noted #pseudogenes besides PTENP1

[440 @GencodeGenes] #Pseudogenes transcribed in breast…carcinoma show subtype-specific expression & ceRNA potential http://www.biomedcentral.com/1471-2164/16/113

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,†

Mammalian Y chromosomes retain widely expressed dosage-sensitive regulators http://www.nature.com/nature/journal/v508/n7497/full/nature13206.html Reconstructed #evolution across 8 species

Daniel W. Bellott,
Jennifer F. Hughes,
…
Richard A. Gibbs,
Richard K. Wilson
& David C. Page

Nature 508, 494–499 (24 April 2014) doi:10.1038/nature13206

Bioinformatics (2015) 31 (1): 33-39. doi: 10.1093/bioinformatics/btu615

Making novel proteins from #pseudogenes
http://bioinformatics.oxfordjournals.org/content/31/1/33.short Outcomes in 16 cases where one gets stable & functional translated products

http://bioinformatics.oxfordjournals.org/content/31/1/33.short

Where Do #Introns Come From? A suggestion: exons with premature stops; has implications for #pseudogene formation http://www.plosbiology.org/article/info%3Adoi%2F10.1371%2Fjournal.pbio.0060283

QT:{{
We have proposed a novel hypothesis for the origin of spliceosomal
introns, invoking endogenous production within translatable sequences
(at least in the case of protein-coding genes), facilitated by the
activity of cellular surveillance mechanisms. Despite the mutational
hazard associated with intron presence and proliferation [136], we
argue that, at least initially, introns might represent a favorable
life line for an allele that has acquired an ORF-disrupting mutation.
In this sense, in-frame stop codons need not be dead ends, as often
believed, but rather sequences that occasionally facilitate the
evolution of eukaryotic gene structure, possibly favoring not only
intronization, but also processes such as exonization (following a PTC
loss [137]). Further experimental validation of our hypothesis would
not only support the idea that intron birth/death rates depend on both
the population-genetic [136] and the intracellular environment, but
also shed light on a surprising aspect of the evolution of eukaryotic
gene structure, i.e., the ongoing, stochastic process of mutual
conversion between exons and introns within genes.
"}}

Linial: ClanTox (www.clantox.cs.huji.ac.il) to classify short peptides as toxins. #ismb #kn1

TOLIPS relevant to brain, neuropeptides

Linial mentions NeuroPID: a predictor for identifying neuropeptide precursors from metazoan proteomes
http://bioinformatics.oxfordjournals.org/content/early/2014/03/05/bioinformatics.btt725.abstract #ismb #kn1

Massive Genomic Decay in… a Recently Evolved #Symbiont of Aphids. Creation of #pseudogenes in many COG categories
http://gbe.oxfordjournals.org/content/3/195.long

Gaelen R. Burke & Nancy A. Moran