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<StructureSection load='' size='350' side='right' caption='[[Selenocysteine]], colored by element using the CPK color scheme of Jmol: {{Template:ColorKey_Element_C}} {{Template:ColorKey_Element_H}} {{Template:ColorKey_Element_O}} {{Template:ColorKey_Element_N}} {{Template:ColorKey_Element_Se}}' scene='CPK/Selenocysteine_spacefilled/1'> "CPK" stands for Corey-Pauling-Koltun. It commonly refers to spacefilling physical molecular models developed by Corey, Pauling and Koltun<ref>Corey, RB and Pauling L (1953), Molecular models of amino acids, peptides and proteins. Rev. Sci. Instr. 24: 621-627.</ref><ref>PMID: 4158989</ref> in the 1950's and 1960's. ''CPK'' also refers to the color scheme for the elements that they adopted. ==CPK Color Scheme for the Elements== In this color scheme, <font color="grey">'''carbon is gray or black'''</font>, <font color="red">'''oxygen is red'''</font>, <font color="blue">'''nitrogen is blue'''</font>, <font color="#c0c000">'''sulfur is yellow'''</font>, and hydrogen is white. As an example, to the right you see '''[[selenocysteine]]''' and then you can change its rendering with the green links below: *<scene name='CPK/Selenocysteine_ball_and_stick/2'>Ball and Stick</scene> *<scene name='CPK/Selenocysteine_sticks/1'>Sticks</scene> *<scene name='CPK/Selenocysteine_spacefilled/1'>Spacefilling</scene> Another example, '''heme C''': * <scene name='35/355976/Heme_c_ball_and_stick/1'>Ball and Stick</scene> * <scene name='35/355976/Heme_c_sticks/1'>Sticks</scene> * <scene name='35/355976/Heme_c_spacefill/1'>Spacefilling</scene> ==CPK in Jmol== The command "color cpk" applies this color scheme in popular molecular visualization programs such as [[RasMol]], [[Chime]], and [[Jmol]]. The complete set of element colors used by Jmol is available at [http://jmol.sourceforge.net/jscolors/ Jmol Colors], where the colors used by RasMol are compared with those used by Jmol. The CPK color scheme for the elements is also incorporated into a standard set of color schemes for macromolecules, [[DRuMS]]. ==CPK in Proteopedia== A color key such as the one below can be inserted into Proteopedia using existing templates (see [[Help:Color Keys]]): <br> {{Template:ColorKey_Element_C}} {{Template:ColorKey_Element_H}} {{Template:ColorKey_Element_O}} {{Template:ColorKey_Element_N}} {{Template:ColorKey_Element_P}} {{Template:ColorKey_Element_S}} {{Template:ColorKey_Element_Se}} {{Template:ColorKey_Element_Fe}} </StructureSection> ==References== <references />

• Template:ColorKey Element C
• Template:ColorKey Element Fe
• Template:ColorKey Element H
• Template:ColorKey Element N
• Template:ColorKey Element O
• Template:ColorKey Element P
• Template:ColorKey Element S
• Template:ColorKey Element Se

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