Coiled coil: Difference between revisions
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<Structure load='1UO2' size='500' frame='true' align='right' caption='Insert caption here' scene='Coiled_coil/Gcn4/1' /> | <Structure load='1UO2' size='500' frame='true' align='right' caption='Insert caption here' scene='Coiled_coil/Gcn4/1' /> | ||
Two strands of general control protein GCN4 from baker's yeast. Observe the slight coil in the strands. (<scene name='Coiled_coil/Gcn4/1'>Initial scene</scene>) Every seventh residue, <scene name='Coiled_coil/Gcn4_2/1'>shown in spacefill</scene>, is nonpolar, and with 3.5 residues per turn each heptad repeat is aligned with the one below and above it, as well as being in position to interact with the heptad repeat on a second strand. Looking down the <scene name='Coiled_coil/Gcn4_3/1'>spline</scene> of the contact. The <scene name='Coiled_coil/Gcn4_4/1'>side chains</scene> of the residues located between the heptad repeats spiral around the helix away from the side chains on the partner strand, thus not permitting interactions between these side chains of the two strands. | Two strands of general control protein GCN4 from baker's yeast. Observe the slight coil in the strands. (<scene name='Coiled_coil/Gcn4/1'>Initial scene</scene>) Every seventh residue, <scene name='Coiled_coil/Gcn4_2/1'>shown in spacefill</scene>, is nonpolar, and with 3.5 residues per turn each heptad repeat is aligned with the one below and above it, as well as being in position to interact with the heptad repeat on a second strand. Looking down the <scene name='Coiled_coil/Gcn4_3/1'>spline</scene> of the contact. The <scene name='Coiled_coil/Gcn4_4/1'>side chains</scene> of the residues located between the heptad repeats spiral around the helix away from the side chains on the partner strand, thus not permitting interactions between these side chains of the two strands. | ||
Three coiled strands of <scene name='Coiled_coil/Hemagglu/1'>influenza hemagglutinin</scene> (1HTM) which is one of the viral proteins that is immunologically active. The heptrad repeats of each strand are shown in <scene name='Coiled_coil/Hemagglu_2/1'>spacefill</scene>. | |||
==Coordinates== | ==Coordinates== | ||
The coordinates for the coiled-coil (tropomyosin) were obtained from Xiaoling Xia and Carolyn Cohen, Brandeis University. | The coordinates for the coiled-coil (tropomyosin) were obtained from Xiaoling Xia and Carolyn Cohen, Brandeis University. | ||
