Sorry about the lack of posts

After arriving back home from the Keystone symposia, I jumped right into preparing for lab meeting where I'm presenting mostly new data. I haven't fully digested the conference, but I'll just leave you with a couple of remarks.

1) The miRNA field is a mess. It remains unclear whether all or any of the proposed mechanisms for miRNA mediated silencing are true.

2) RNA granules are everywhere. Anytime the cell does something funky with it's mRNA (be it NMD or miRNA induced silencing) it shoves the mRNA in question into a granule. But why? Could it be a general response to stress? Paul Anderson had some interesting screens that have some surprising data concerning the composition of two such structures, Stress Granules and P-bodies.

3) Venki Ramakrishnan showed an awesome movie of how the ribosome synthesizes proteins (wmv format, quicktime). Here's a link to the Ramakrishnan lab's movie collection.

4) TOR signaling is whee it is at. This signal transduction cascade is so fundamental to metabolism, protein synthesis, homeostasis and cancer, it is just incredible. And it also affects every step of gene expression - from turning genes on to modifying how mRNA splices, to activating mRNA translation in multiple ways. It is also one of the most ancient signaling cascades in eukaryotes. I'll have to write up some sort of overview. All I can tell you is keep your eyes open - my good friend Max Ma will have an incredible paper coming out soon linking several different concepts into one cool story.

OK I'll leave it at that.

Tags

More like this

Flipping through the latest issue of Cell: Ujwal Sheth from Roy Parker's lab details the molecular mechanism that targets RNAs with premature stop codons to processing-bodies (or p-bodies) via the non-sense mediated decay (NMD) pathway. P-bodies are dense cytoplasmic granule-like structures that…
I just wanted to post a brief entry on the newest paper from the Moore lab. I've already hinted at some of these results in a post from last year. As you all know, mRNA is made and processed in the nucleus. During mRNA synthesis, all the introns must be removed and all the exon sequences must be…
miRNA and RNA interference is so hot right now ... I'm not in the field, but I do keep an eye on it. Right now the there is quite a few papers on how miRNAs regulate translation. There is some data that indicate that miRNA and the associated RISC complex (RNA Interference Silencing Complex)…
There are plenty of large mRNA agregates in cells. In the past few years, two of these structures have gained quite a bit of attention, Stress Granules (SGs) and Processing Bodies (PBs). mRNAs in SGs are loaded with 48S complex, which consists of the small ribosomal subunit, the cap binding complex…