Biology 372: Molecular Biology
How to Read Primary Literature
Reading and understanding primary literature is hard work. You should
expect to spend a minimum of two hours reading each of
the assigned papers (although if you have experience reading primary
literature, it may take less time). Don't worry if you don't feel like
you completely understand the papers; learning to dissect a paper and
pull out the important information is an acquired skill, and one of the
goals of this course. The information contained on this page is
intended to provide you with some guidelines for things you should be
thinking about while you are reading the assigned primary literature.
Assignment:
- You MUST read each assigned paper before class.
- Each week, students are expected to hand in a question about the
paper at the beginning of the class period. The goals of having you
come to class prepared with a question are to strongly encourage you to
understand the paper as best as you can and to facilitate class
discussion. Therefore, the question should be about the science
presented in the paper and should represent the fact that you have read
the paper and thought about the information it contains. For example,
you may have a question about a control experiment that is missing or
an assumption that was made in interpreting the data. An inappropriate
question would be: "How do you do bisulfite mutagenesis (or any other
technique)?" since this will not indicate whether you have actually
attempted to understand the paper.
- Students who are presenting the paper do not need to bring in a
question for that week.
As a reader:
- While reading the abstract and introduction, try to determine
what question the researchers are asking and why they got interested in
this question.
- For each experiment described in the results, think about what
the researchers were asking and how they tried to answer the question
experimentally.
- LOOK AT THE FIGURES!!! When a figure is refered to in the text,
turn your attention to the figure. Read the figure legend. If
necessary, read the materials and methods section. Try to interpret the
data presented in the figure on your own. Go back to the text and
re-read the relevant section, and then look at the figure again.
- Draw a conclusion from each experiment presented. In other words,
after you read about each experiment, ask the question: "What
conclusion did the researchers draw from this experiment?"
- When reading the discussion, pay particular attention to any
controversies the authors mention. Decide for yourself if the proposed
interpretations and models are supported by the data in the paper.
- FEEL FREE TO BE CRITICAL! The fact that a paper has been
published does not mean that the information it contains is always
accurate. You may not agree with every interpretation or conclusion.
You may think that important experiments are missing. It can be a lot
of fun to "rip apart" a paper.
As a student presenter:
- You and your partner are expected to prepare a 20 minute
presentation on your assigned paper (see below). For the remaining
class time, you will lead a discussion of the paper with the other
students in the class. (Remember: each student will come to class with
a question about the paper, so there should be plenty of questions for
discussion.)
- You will be responsible for presenting sufficient background
information so that the rest of the students in the class can put the
paper into an appropriate context. In other words, you will want to
present information relating to why these researchers were working on
this project - what interesting question were they asking?
- You will then present the paper, focusing on the experiments
performed. Generally, data from most (or all) of the experiments will
be presented in figures. You should have overheads or powerpoint slides
of the figures to display for the class, so that while you are
discussing the data, you can point out relevant portions of the figure.
- You should be prepared to explain the questions asked by the
researchers, the experimental approaches they took to address these
questions and their interpretation of the data.
- If you have any trouble understanding your paper PRIOR
to your presentation, please feel free to come and talk to me about it.
I will do my best to answer any questions that you have.
I have specifically chosen some older, "classic" molecular biology
papers as well as some more current papers. The older papers were
chosen as representatives of landmark experiments and interesting
techniques. The more recent papers illustrate research topics that are
of current interest.
Enjoy the readings!
This page is maintained by Tamara L. Davis/revised 1/13/05.