User:Eran Hodis/Sandbox3
From Proteopedia
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| - | <script>background [xffffff]; javascript "/cgi-bin/getlateststructure?1aoi"; set frank off; select all; spin off; wireframe off; spacefill off; trace off; set ambient 40; set specpower 40; slab off; ribbons off; cartoons off; label off; monitor off; rotate x 5; rotate y 180; rotate z -2; zoom 110; translate y -4; select dna; color cpk; spacefill; select DNA and backbone; color violet; select protein; spacefill; color tan; select t1; wireframe off; select a1; wireframe off; delay 1; select protein; wireframe off; cartoons off; spacefill off; cartoons; spacefill; select :a, :e; color [x63529C]; select :b, :f; color green; select :c, :g; color [xFFF200]; select :d, :h; color[xFC351F]; delay 1; select dna; spacefill 300; delay .2; spacefill 250; delay .2; spacefill 200; delay .2; spacefill 150; delay .2; spacefill 100; delay .2; spacefill 50; delay .2; spacefill 25; delay .2; spacefill off; wireframe off; move 0 180 0 0 0 0 0 0 4; delay 1; move 0 180 0 0 0 0 0 0 4;</script> | + | <script>background [xffffff]; javascript "/cgi-bin/getlateststructure?1aoi"; set frank off; select all; spin off; wireframe off; spacefill off; trace off; set ambient 40; set specpower 40; slab off; ribbons off; cartoons off; label off; monitor off; rotate x 5; rotate y 180; rotate z -2; zoom 110; translate y -4; select dna; color cpk; spacefill; select DNA and backbone; color violet; select protein; spacefill; color tan; select t1; wireframe off; select a1; wireframe off; delay 1; select protein; wireframe off; cartoons off; spacefill off; cartoons; spacefill; select *:a, *:e; color [x63529C]; select *:b, *:f; color green; select *:c, *:g; color [xFFF200]; select *:d, *:h; color[xFC351F]; delay 1; select dna; spacefill 300; delay .2; spacefill 250; delay .2; spacefill 200; delay .2; spacefill 150; delay .2; spacefill 100; delay .2; spacefill 50; delay .2; spacefill 25; delay .2; spacefill off; wireframe off; move 0 180 0 0 0 0 0 0 4; delay 1; move 0 180 0 0 0 0 0 0 4;</script> |
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</jmol>Two copies of each histone protein, <font color="gold">H2A</font>, <font color="red">H2B</font>, <font color="purple">H3</font>, and <font color="#00CC00">H4</font>, are assembled into an octameric disc. Although each monomer has an N-terminal tail that projects from the histone core, the structure at left shows only a single tail from one <span class="style9">H3</span> monomer. | </jmol>Two copies of each histone protein, <font color="gold">H2A</font>, <font color="red">H2B</font>, <font color="purple">H3</font>, and <font color="#00CC00">H4</font>, are assembled into an octameric disc. Although each monomer has an N-terminal tail that projects from the histone core, the structure at left shows only a single tail from one <span class="style9">H3</span> monomer. | ||
Revision as of 13:34, 12 May 2010
Nucleosome Structure
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Introduction
The nucleosome core particle contains two copies of each histone protein (H2A, H2B, H3 and H4) and 146 basepairs (bp) of superhelical DNA wrapped around this histone octamer. It represents the first order of DNA packaging in the nucleus and as such is the principal structure that determines DNA accessibility.
The Histone Octamer
Two copies of each histone protein, H2A, H2B, H3, and H4, are assembled into an octameric disc. Although each monomer has an N-terminal tail that projects from the histone core, the structure at left shows only a single tail from one H3 monomer.
