Hey guys!
Here's a Q&A put together in the hopes of helping everyone entering/thinking of going into Chem Bio. This is a fantastic program, let no one tell you otherwise; however, there are a few common misconceptions about the program which need to be cleared up. Rather than inferring things about what the Program is like, I think it'd be best if people who are actually in the program spoke on its behalf.
If you have any further questions (other than the ones which are addressed, post them in this thread and I am sure myself, Lauren, or other Chemical Biologists will be happy to help!)
Here it is.
What is chemical biology?
In crude terms, chemical biology is a discipline at the interface of biological sciences and the physical sciences. As my time in the program goes on, it seems that everyone has their own definition of what being a chemical biologist actually is! This makes sense, seeing as Chemical Biology is rather broad in scope (despite commonly being referred to as a highly ‘specific’ program).
You may or may not have caught onto my use of the word ‘interface’ (a term that, in itself, is not very definitive at all). In chemical biology, we are not limited to a set of tools or instrumentation we can use to solve or approach a given problem. We are also not limited to the problems we are able to solve, either. Chemical biologists has been described before as being able to have “dreams” different from those of chemists or biologists. What does that mean? Scientifically-speaking, biologists live in a world with three dimensions: DNA, RNA and proteins... all these dimensions are clearly interconnected and the manipulation of one can, and will, have an effect on the other two. However, chemical biologists introduce a ‘chemistry-based’ fourth dimension (i.e. ‘small molecules’) which can regulate (OR be regulated by) the other three dimensions in a biological system. This means that we can introduce small molecules to modulate the biological system, OR we can use the biological system to make small molecules (which could in turn regulate the biological system).
Classic question: “What’s the difference between Chemical Biology and Biochemistry? They’re, like, the same thing, right? You just switched the ‘Chem’ and the ‘Bio’ parts! [insert laugh here]”
Oh, hilarious. The question is so original that you will not hear enough of it (yes, therefore not original at all). Best thing is when the same person asks you the question multiple times (but of course on different occasions, so that you “don’t know” they’re asking you again). Basically, it’s like this:
Biochemistry
What is it? Chemistry applied to biology; studying the chemistry of biomolecules.
Example 1: The structure of the protein determines its function.
Example 2: On/off control of biological activity; mutagenesis of a gene could lead to a gene product (protein, or other) with a different biological activity.
Chemical Biology
What is it? Chemical techniques applied to investigate and manipulate a biological system. By manipulating a system (i.e. ‘probing’ it, with small molecules, etc.) you can learn a lot more about how it actually works.
Example 1: The protein’s function is determined by its structure, chemical modifications, cell physiology, other protein’s present, external environmental stimuli/conditions, etc.
Example 2: Modulation of biological activity; a small molecule or peptidomimetic can serve to alter the gene product’s biological activity in a dose-dependent manner.
A more elaborate answer was provided on MacInsiders:
Biochem: the nitty-gritty chemistry of biological systems--this includes stuff like glycolysis and the krebs cycle (from high school), but it goes WAYYY beyond that as well. I think the other biochem stuff covered in high school was DNA replication, and transcription/translation. biochem focuses more on understanding how biological systems work, and then how we can use that knowledge for useful things--ex, if I know the pathway for repairing DNA damage caused by UV light, I can look at ways of stimulating this pathway to decrease the risk of skin cancer. There are more pathways involved, and it is DEFINITELY more biology-based. biochemists look at proteins' structures and how the structure affects its function.
Chembio: how small molecules affect/interact with biological systems. this includes looking at the specific functional groups that make a molecule a good drug, and WHY these functional groups are effective. There is a lot of focus on synthesizing molecules for whatever purpose you want, as well as extracting very complex molecules from natural sources (these often make the best drugs). Proteins are useful to a chemical biologist as targets for small molecules--this often requires knowledge of the protein structure, and dealing with protein targets is the biggest way in which chembio and biochem/bio will overlap. For example, if I know an enzyme that interferes with the DNA repair pathway, I can find a small molecule to inhibit that enzyme to decrease the risk of skin cancer.
There is a great deal of overlap in the second-year courses for biochem & chembio, but third and fourth year are very different. chembio is CHEMISTRY, with a biological application. In practise (like, in research) chemical biologists and biochemists often work on the same problems, but with different approaches and often different methods.
Chembio is mostly 'perturb and observe', meaning we add a small molecule or something (perturb the system) and observe the effect.
Biochem is more 'wreck and check'--for example, irradiating a sample to cause a ton of different mutations (wrecking the system), and searching for/isolating the one with the effect you want.
I heard Chemical Biology was hard... is this true?
Chemical biology is an interdisciplinary science. As mentioned in the first section (“What is chemical biology?”) you can see that chemical biology encompasses DNA, RNA, proteins and small molecules. Accordingly, you will find that the areas which are studied in this program are rather broad since chemical biology is in fact a ‘holistic’, rather than a ‘reductionistic‘ science. By definition, a holistic science suggests that (biological) systems work as an entity, and you cannot study only one component of the system if you wish to understand the entire (biological) system. In order to understand each component of the system you are investigating, this program has you study various realms of biology and chemistry.
If you put in the effort, you should be fine. Also, take advantage of all the resources you have to help you (classmates, professors). The hardest part of being in this program is adjusting to what the program actually entails.
But how, course-wise, is this program different from, say, Chemistry, Biochemistry, or Biology & Pharmacology?
Look at the courses listed under each of the above-mentioned programs. After you look through, you’ll notice a few things. Note that I have not included ALL of the courses in any of these programs. Highlighted are the courses in OTHER programs which are also taken by Chemical Biologists.
Chemistry
Under the Department of Chemistry and Chemical Biology.
Relatively small program (~20-30 people admitted per year)
Courses include Quantitative Chemical Analysis, Organic Chemistry (exclusive to the Program), In-organic Chemistry, Structure and Reactivity of Organic Molecules, Synthesis and Function of Organic Molecules, Equilibria and Kinetics, Inquiry, Lab Course, Chemical Analysis, Introduction to Transition Metal Chemistry, Quantum Mechanics and Spectroscopy, Strategies for Chemical Discovery (labs), Applications of Chemical Inquiry, Proteins and Nucleic Acids.
There is a co-op program OPTION. You would be admitted into this program in your 3rd year, should you apply in 2nd year.
Notes: Many of the courses listed are equivalents of the Organic Chemistry, Analytical Chemistry and Physical Chemistry Courses taken in Chemical Biology. Yes, they will have more courses about these things seeing as the program is called ‘Chemistry’.
Biochemistry
Under the Department of Biochemistry and Biomedical Sciences
Option of Specializations (Biotechnology, Biomedical Sciences, Origins Research, or stay in the Honours Program)
Relatively large program (if you stay in the Honours Program; this becomes significantly smaller if you choose to specialize)
Courses include Nucleic Acid Structure/Function, Protein Structure / Enzyme Function, Cell Biology, Genetics (not required after this year), Full-year lab course, Bio-physical Chemistry, Organic Chemistry I and II, Metabolism and Regulation, Statistics, Analytical Chemistry, Gene regulation and Stem Cell Development, Advanced Topics in Gene Expression.
There is a co-op program OPTION. You would be admitted into this program in your 3rd year, should you apply in 2nd year.
Many of the courses in this program are available to students who are not in this program (not the lab courses or research projects though).
Note: We share a lot of the same courses with them, plus some others which they do not take. One big difference is that in Chem Bio you take Analytical Chemistry with 3rd year Biochemistry students.
Biology & Pharmacology
Under the Department of Biology.
Small program (~20 people are admitted per year); small faculty.
Courses include Proteins and Nucleic Acids, Cell Physiology, Homeostasis, Regulatory Systems, Introduction to Pharmacology (Pharmacokinetics/Pharmacodynamics), Methods in Pharmacology (study of drugs in vitro), Receptor-Drug Interactions, Principles in Toxicology, Senior Thesis, Advanced Topics in Pharmacology.
This is a co-op program to which you would be admitted after 2nd year (if you apply)
Many of the courses in this program are exclusive for the people in the program
Note: You cannot take Proteins and Nucleic Acids if you have taken Nucleic Acid Structure/Function and Protein Structure/Enzyme Function, both of which are requirements of the Chemical Biology Program. No, we don’t share a lot of the same courses.
Chemical Biology
Under the Department of Chemistry and Chemical Biology
Small program (~30 people have been admitted per year); small faculty.
Courses include Analytical Chemistry, the 2nd Year Lab Course (Standard Tools/Techniques of Chemical Biology), Cell Biology, Nucleic Acid Structure/Function, Bio-physical Chemistry, Protein Structure/Enzyme Function, Genetics, Bio-organic Chemistry, Biomolecular Interactions, Inquiry for Chemical Biology, 3rd Year Lab Course, Structural Elucidation, Assay Development, Bio-inorganic Chemistry, Natural Products, Medicinal Chemistry: Drug Design and Development, Organic Chemistry I and II, Organic Synthesis, Metabolism and Regulation, Bio-inorganic Chemistry, Thesis or Research Project, Instrumental Analysis.
There is an OPTION to enter a co-op program after your 2nd year.
“The drop-out rate is so high for the program!”
I really believe that this is because a lot of people go into this program not really knowing what they are actually getting themselves into. You should always look at the COURSES which are provided by a particular program, rather than just a general program description, to decide whether or not something will be interesting to you. Of course there will always be courses that you like less than others... but you should always like the majority of them. If you decide that Chemical Biology is not for you - that’s fine!
Just know that:
This is a new program (students entering the program in the 2010/2011 academic year will be the 3rd year of the program, ever). Changes to courses are constantly being made.
You’ll be expected to work. Complaining is, quite possibly, a form of procrastination. So don’t do it and you’ll be done your work a lot faster.
The first semester in second year (the adjustment period) will probably be the hardest. After that, it gets easier.
“Why do I have no electives?!”
You have one elective 2nd year. A few more third year. A lot during your fourth year. Believe it or not, you probably won’t know what to do with all your elective space in fourth year. Also, be smart about the courses you are taking and when you take them. Some courses are only offered every other year (this is more relevant for 3rd/4th year courses).
Are there other Chemical Biology Programs - are we the only ones?
No.. here is a list of some other institutions which offer Chemical Biology programs:
http://community.acs.org/ChemBiol/WI...t/Default.aspx
Sarrah