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CPK

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<table align="right" width="300" border="0" style="background-color:#e0e0e0;"><tr><td>
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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'>
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<applet size='310' frame='true' align='right' scene='CPK/Selenocysteine_spacefilled/1' />
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"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.
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==CPK Color Scheme for the Elements==
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[[Selenocysteine]],
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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.
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colored by element using the CPK color scheme of Jmol.
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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_ball_and_stick/2'>Ball and Stick</scene>
*<scene name='CPK/Selenocysteine_sticks/1'>Sticks</scene>
*<scene name='CPK/Selenocysteine_sticks/1'>Sticks</scene>
*<scene name='CPK/Selenocysteine_spacefilled/1'>Spacefilling</scene>
*<scene name='CPK/Selenocysteine_spacefilled/1'>Spacefilling</scene>
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</td></tr></table>
 
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"CPK" stands for Corey-Pauling-Koltun. It commonly refers to a color scheme for the elements that originated in 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 this color scheme, carbon is gray or black, <font color="red">'''oxygen is red'''</font>, <font color="blue">'''nitrogen is blue'''</font>, and hydrogen is white. 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.
 
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Another example, '''heme C''':
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* <scene name='35/355976/Heme_c_ball_and_stick/1'>Ball and Stick</scene>
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* <scene name='35/355976/Heme_c_sticks/1'>Sticks</scene>
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* <scene name='35/355976/Heme_c_spacefill/1'>Spacefilling</scene>
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==CPK in Jmol==
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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]].
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==CPK in Proteopedia==
A color key such as the one below can be inserted into Proteopedia using existing templates (see [[Help:Color Keys]]):
A color key such as the one below can be inserted into Proteopedia using existing templates (see [[Help:Color Keys]]):
<br>
<br>
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{{Template:ColorKey_Element_O}}
{{Template:ColorKey_Element_O}}
{{Template:ColorKey_Element_N}}
{{Template:ColorKey_Element_N}}
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{{Template:ColorKey_Element_P}}
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{{Template:ColorKey_Element_S}}
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{{Template:ColorKey_Element_Se}}
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{{Template:ColorKey_Element_Fe}}
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</StructureSection>
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==References==
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<references />

Current revision

Selenocysteine, colored by element using the CPK color scheme of Jmol: C H O N Se

Drag the structure with the mouse to rotate

References

  1. Corey, RB and Pauling L (1953), Molecular models of amino acids, peptides and proteins. Rev. Sci. Instr. 24: 621-627.
  2. Koltun WL. Precision space-filling atomic models. Biopolymers. 1965 Dec;3(6):665-79. PMID:4158989 doi:http://dx.doi.org/10.1002/bip.360030606

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Eric Martz, Angel Herraez, Eran Hodis

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