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

It's been a while since I've written about mRNA and mRNA export. There has been lots of CPEB papers (cytoplasmic polyadenylation element binding protein), but nothing fundamentally new at the molecular level.
Well the latest paper from the Reed lab (squeeking into Cell on its last issue of 2006) demonstrates that the cap is indeed promoting nuclear export of mRNA in vertebrate cells.
Yes this is the surprising result interpretation of Jonathan Weissman's paper in Science.
Well I am trying to decide whether to attend this year's RNA Society Conference. As I'm a neophyte to the field (my PhD thesis was on microtubules in migrating cells), I learned quite a bit at last year's meeting.