Next, find the phosphorus in 1NAJ and record the color on your worksheet. Also note that many of the hydrogens are missing from the drawing and that one or two solid lines are used to represent covalent bonds.ġ0. There will be some differences since the drawing is flat and two-dimensional and Cn3D shows a three-dimensional structure. Begin by comparing the drawing of deoxyguanosine monophosphate, shown on the next page, with 1NAJ, the structure presented in Cn3D. The colors used are standard for all structure viewing programs and will be the same in all structures.ĩ. When Cn3D assigns colors by element, each element is drawn with a distinctive color. In the next steps, you will identify the elements that make up guanine and build a color key, for future reference, matching each element with the color assigned by Cn3D. It may be helpful to enlarge the structure for better viewing. Now the g will be colored according to the elements it contains. Deselect the g by clicking once inside the Sequence/Alignment Viewer window and clicking any other base. Note: the color will remain yellow until the g in the Sequence/Alignment window is deselected.Ĩ. Click the pointer in the Structure window to see the Select menu. Both the letter "g" and the guanine in the DNA will appear yellow once they've been selected.Ħ. The g is an abbreviation for the nucleotide, guanine. In the Sequence/Alignment Viewer window, select a "g" from the middle of either DNA strand, by clicking it with the mouse.
There will be different menu options depending upon which window is active.ĥ. Click the pointer in the structure Sequence/Alignment Viewer window - Notice that the menu options change. Look at the menu at the top of the screen. Select Rendering Shortcuts > Ball and Stick.Ĥ. Make sure that the Preferences are set on Low quality.ģ. The building blocks of DNA and the double-strand DNA drawing Instructions:Ģ. In this activity, you will learn about the different subunits and their distinctive structures. Genetic information is stored within the nucleotide subunits of the DNA molecule.
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