Page 204 - The Manga Guide to Biochemistry
P. 204

Take a look at this graph. When                           We did it!
  the x-axis value is 0, the y-axis                      We got Vmax!
value is approximately 0.019. That
 means that, in this reaction, the
 Vmax value of DNA polymerase is

          1/0.019, or about 52.6.

                        In other words, the
                        DNA polymerase can
                     react with nucleotides
                        to synthesize about
                      52.6 pmol of new DNA*

                                per hour.**

Reciprocal of                                Slope
   reaction rate (pMol/hour)

                              Reciprocal of substrate
                                  concentration (1/µM)

Hang on, Kumi. You’re         If you look carefully at
celebrating a bit too         this reciprocal plot, you
soon. Remember, this
                                can see that the slope
  graph also lets us            of the straight line is
 calculate the exact
                                       represented by
        value of Km!

                                                                    I hope you
                                                               remember your
                                                              algebra because

                                                                  we’re diving
                                                                      right in!

* This value can vary according to the measurement conditions or the type of DNA polymerase. 52.6 pMol/hour
  is just an example.

** Remember, the DNA polymerase reaction time was 60 minutes.
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