Complex III of Electron Transport Chain: Difference between revisions

← Older edit Newer edit →

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

Karl Oberholser, Eran Hodis, Jaime Prilusky, Alexander Berchansky, Michal Harel

Revision as of 20:06, 22 January 2009 view source Karl Oberholser (talk \| contribs) 1,665 edits No edit summary ← Older edit		Revision as of 22:59, 22 January 2009 view source Karl Oberholser (talk \| contribs) 1,665 edits No edit summary Newer edit →
Line 8:		Line 8:


	<applet load='1kyo' size='400' color='black' frame='true' align='right' scene ='Complex_III_of_Electron_Transport_Chain/Sma_cyto_b/1' name='second'/>Each <font color='#0000CD'>cytochrome c1</font> contains <scene name='Complex_III_of_Electron_Transport_Chain/Hem_cyto_c1/2'>a heme</scene>. Viewing <scene name='Complex_III_of_Electron_Transport_Chain/Hem_cyto_c1_top/2' target='second'>cyto c1 in spacefill</scene> as it would be seen from the intermembrane space, there is an opening in the center of the dimeric structure through which one can see the gray hemes of the cyto b's. Also seen in this view is the gray heme embedded in each of the cyto c1's showing that the heme is located in a crevice which is open to the intermembrane space and to the <scene name='Complex_III_of_Electron_Transport_Chain/Hem_cyto_c1_side_open/1'>side facing the Rieske protein</scene> (heme oxygens are seen). These openings of the crevice permits the cyto c1 heme to make contact with the Rieske protein and with cytochrome c when it binds to the <scene name='Complex_III_of_Electron_Transport_Chain/Hem_cyto_c1_top/2'>surface of cyto c1</scene>. There are <scene name='Complex_III_of_Electron_Transport_Chain/Hem_cyto_c1_neg_res/1'>negatively charged acidic residues</scene> which attrack the complementary positive charges on cytochrome c, a basic protein. <scene name='Complex_III_of_Electron_Transport_Chain/Hem_cyto_c/2'>Cytochrome c (colored cyan)</scene> bound to one cyto c1 showing that the hemes of the two cytochromes are in close contact.		<applet load='1kyo' size='400' color='black' frame='true' align='right' scene ='Complex_III_of_Electron_Transport_Chain/Sma_cyto_b/1' name='second'/>Each <font color='#0000CD'>cytochrome c1</font> contains <scene name='Complex_III_of_Electron_Transport_Chain/Hem_cyto_c1/2'>a heme</scene>. Viewing <scene name='Complex_III_of_Electron_Transport_Chain/Hem_cyto_c1_top/2' target='second'>cyto c1 in spacefill</scene> as it would be seen from the intermembrane space, there is an opening in the center of the dimeric structure through which one can see the gray hemes of the cyto b's. Also seen in this view is the gray heme embedded in each of the cyto c1's showing that the heme is located in a crevice which is open to the intermembrane space and to the <scene name='Complex_III_of_Electron_Transport_Chain/Hem_cyto_c1_side_open/1'>side facing the Rieske protein</scene> (heme oxygens are seen). These openings of the crevice permits the cyto c1 heme to make contact with the Rieske protein and with cytochrome c when it binds to the <scene name='Complex_III_of_Electron_Transport_Chain/Hem_cyto_c1_top/2'>surface of cyto c1</scene>. There are <scene name='Complex_III_of_Electron_Transport_Chain/Hem_cyto_c1_neg_res/1'>negatively charged acidic residues</scene> which attrack the complementary positive charges on cytochrome c, a basic protein. <scene name='Complex_III_of_Electron_Transport_Chain/Hem_cyto_c/3'>Cytochrome c (colored cyan)</scene> bound to one cyto c1 showing that the hemes of the two cytochromes are in close contact.