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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'>
<applet size='300' frame='true' align='right' caption='Selenocysteine'  
"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.
scene='Selenocysteine/Selenocysteine_dot_pdb/1' />
</td></tr>
[[Selenocysteine]],  
<jmol>
<jmolButton>
<script>select all; wireframe 0.2; spacefill off;</script>
<text>Stick Model</text>
</jmolButton>
<jmolButton>
<script>select all; spacefill;</script>
<text>Spacefill</text>
</jmolButton>
</jmol>
<tr><td>
</td></tr></table>


<jmol>
==CPK Color Scheme for the Elements==
<jmolButton>
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.
<script>select all; wireframe 0.2; spacefill off;</script>
<text>Stick Model</text>
</jmolButton>
<jmolButton>
<script>select all; spacefill;</script>
<text>Spacefill</text>
</jmolButton>
</jmol>
),


"CPK" stands for Corey-Pauling-Koltun. It commonly refers to a color scheme for the elements that originated in physical models developed by Corey, Pauling and Koltun. 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.
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]]):
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}}
{{Template:ColorKey_Element_P}}
{{Template:ColorKey_Element_S}}
{{Template:ColorKey_Element_Se}}
{{Template:ColorKey_Element_Fe}}
</StructureSection>
==References==
<references />

Proteopedia Page Contributors and Editors (what is this?)Proteopedia Page Contributors and Editors (what is this?)

Student, Eric Martz, Eran Hodis, Angel Herraez