My background is in organic chemistry, but the great thing about a meeting like this is that I can learn new things. So yesterday, I decided to explore the strange (to me) world of inorganic chemistry. Frankly, I had no idea what I would discover. I half expected the inorganic attendees to fall silent when I walked into the room, staring at me with hostile eyes, before announcing "We don't like organic chemists in these parts". I think the jetlag is making me paranoid.

But no, it was all cool and I saw some great stuff. Naively, I would never have expected to see an enzyme crystal structure outside of a drug discovery seminar. But then I discovered bioinorganic chemistry, and there were active sites everywhere. John Lipscomb and Steve Lippard gave some cracking talks about the metal species found in enzymes, such as Rieske dioxygenases and bacterial multicomponent monooxgenases. These proteins can be thought of as the original C-H activation specialists. On a similar vein, Thomas Rauchfuss is doing some amazing chemistry to model the active site of hydrogenases.

What I really liked about these sessions was that the lecture rooms were smaller (it was standing room only for Lippard's talk), and the debate was lively. Every talk inspired interesting discussion, and I was impressed by the spirit of academic engagement, which I hadn't really encountered elsewhere. So, if you're sticking closely to your own areas, why not go foraging in foreign territory? You might like what you find.

Andy

Andrew Mitchinson (Associate Editor, Nature)

Posted by amitchinson at 02:23 PM | Permalink | Comments (1) | TrackBacks (0)

In the September issue of Nature Chemical Biology, John Silvius wrote about McGill University's interdepartmental graduate program in chemical biology, which was established in 2002 and now has "roughly 30 graduate students, 10 postdoctoral fellows and 30 faculty mentors."

The program involves scientists from the Department of Biochemistry, the Department of Chemistry, and the Department of Pharmacology and Therapeutics, and a "key objective of the program is to maximize opportunities for students with chemistry and life science backgrounds to share and appreciate their sometimes distinct perspectives on the field of chemical biology." Silvius wrote that this is accomplished via seminar discussion meetings, workshops, and an "annual research symposium at which students present their work to other students and faculty mentors."

There are other interdepartmental and multi-institutional graduate programs in chemical biology: for example, there is the Cornell/Rockefeller/Sloan-Kettering Tri-Institutional Training Program in Chemical Biology in New York City (which involves Cornell University, The Rockefeller University, Memorial Sloan-Kettering Cancer Center, and the Weill Medical College of Cornell). Graduate students in the Tri-Institutional Training Program can rotate in (and join) laboratories at any of the institutions and they do not have to teach classes, "enabling them to take an accelerated course schedule (four courses per semester during the first year)." (Although I understand that the program was designed so the students could take a large number of classes, I really enjoyed teaching during graduate school and think it's an important experience for all graduate students. But I'll save that topic for another blog post...)

There's obviously more than one way to train the next generation of chemical biologists, but Silvius believes that

An effective training program in chemical biology must produce graduates who have a distinct sense of intellectual identity yet can work effectively with researchers that are more conventionally trained either in chemistry or in the life sciences alone... Moreover, by promoting constant intermixing of individuals trained in the cultures of chemistry and biology, such a program allows students to be participants in the very type of stimulating, creative ferment that drives the field of chemical biology itself.

If you are a graduate student in (or a recent graduate of) an interdepartmental or multi-institutional graduate program in chemical biology, I'd be interested in hearing your thoughts about your program/your experiences. Why did you choose an interdepartmental or multi-institutional graduate program, instead of a Department of Chemistry & Chemical Biology? (And for those of you who did their graduate work in a Department of Chemistry & Chemical Biology, why didn't you choose an interdepartmental or multi-institutional graduate program?) For those of you working on the interface of other disciplines (for example, biophysics, chemical physics, bionanotechnology, etc.) did your graduate program meet your (scientific) needs/expectations? If not, what could they have done to make it easier for you to pursue interdisciplinary research?

Joshua

Joshua Finkelstein (Associate Editor, Nature)

Posted by Joshua Finkelstein at 10:31 AM | Permalink | Comments (4) | TrackBacks (0)

While flipping through yesterday's issue of Nature, I came across the special report on toxicology/toxicologists in the Naturejobs section... After struggling to get that infernal Britney Spears song out of my head, I read through the article, which really made toxicology sound like an interesting career...

Ricki Lewis wrote that a "career in toxicology might take a scientist to a contaminated well, a crime scene, a courtroom, an analytical chemistry lab or a political hearing" and "it isn't uncommon for a seasoned scientist to have spent time in academia, industry and government, and finish with private consulting." Considering how successful shows like CSI and Numb3rs are, I'm a bit surprised that no one's produced a prime-time TV drama starring toxicologists (I can see it now - EPA: Risk Assessment Unit...)

There's also a nice News & Views article by Robert Crabtree on a recent Science paper from the Goldman and Brookhart laboratories - in the presence of an iridium catalyst and a Schrock metathesis catalyst, the authors reported that a tandem alkane dehydrogenation/olefin metathesis reaction could be used to elongate inert hydrocarbon chains (technically, it's a tandem alkane dehydrogenation/olefin metathesis/alkane hydrogenation reaction, but that's a bit of a mouthful...)

The authors hope that this system could be used "turn coal, leftover oil refinery products or even plants into diesel fuel and other functional hydrocarbons." But Professor Brookhart acknowledged that "considerable improvements in the catalyst systems are required before they become practical."

Joshua

Joshua Finkelstein (Associate Editor, Nature)

Posted by Joshua Finkelstein at 04:24 PM | Permalink | Comments (2) | TrackBacks (0)

Earlier today, Professor John Bercaw talked about the kinetics and mechanism of methane C-H activation via electrophilic platinum complexes. They used sapphire NMR tubes to analyze methane activation kinetics at extremely high pressures (300-1000 psi of methane in the paper, but Bercaw mentioned that they safely could go up to 3000 psi).

In their recent JACS paper, Owen et al. acknowledged "Dan Nieman, Dean Roddick, Steve Olson, Mike Roy, David Law, Glenn Sunley, and Marc Payne for assistance with design and construction of the high-pressure NMR equipment." I've scoured the Bercaw group homepage and the internet trying to find a picture of this device, but I wasn't able to find one...

What's your favorite device that was constructed to address a scientific problem? Maybe Professor Patrick Brown's cDNA microarrayer? Or one of Professor George Whitesides's self-assembled (functional) electronic devices? Or Professor Peter Seeberger's solid-phase oligosaccharide synthesizer?

Joshua

Joshua Finkelstein (Associate Editor, Nature)

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This morning, Professor John Hartwig was awarded the "ACS Award in Organometallic Chemistry." In his talk, he discussed a number of recent results from his laboratory, including the insertion of an iridium complex into an N-H bond of ammonia, the intermolecular hydroamination of vinylarenes, an iridium catalyst able to perform enantioselective allylic aminations, and some of his recent mechanistic studies of the palladium-catalyzed amination of aryl halides (a collaboration between Hartwig's group, Donna Blackmond's group at Imperial College, and Stephen Buchwald's group at the Massachusetts Institute of Technology.

Earlier in the session, Robert Bergman talked about some of the work his group has done (in collaboration with Kenneth Raymond's group) which involved C-H bond activation of aldehydes using an iridium catalyst and guest/host chemistry - maybe it's just Hartwig's and Bergman's enthusiasm rubbing off on me, but I think that iridium (which was "named after the Latin word for rainbow (iris ...) because many of its salts are strongly colored") might be my new favorite transition metal...

Joshua

Joshua Finkelstein (Associate Editor, Nature)

Posted by Joshua Finkelstein at 02:02 PM | Permalink | Comments (4) | TrackBacks (0)