Structure superposition tools: Difference between revisions
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Eric Martz (talk | contribs) |
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<applet size='350' frame='true' align='right' caption='Structural alignment of [[1fsz]] with [[1tub]].' | <applet size='350' frame='true' align='right' caption='Structural alignment of [[1fsz]] with [[1tub]].' | ||
scene='Structural_alignment_tools/Dali/2' /> | scene='Structural_alignment_tools/Dali/2' /> | ||
Structural alignments are usually visualized as the superimposed backbone traces of the aligned models. The example at right shows the bacterial cell division protein <font color=" | Structural alignments are usually visualized as the superimposed backbone traces of the aligned models. The example at right shows the bacterial cell division protein <font color="#d80000"><b>FtsZ</b></font> ([[1fsz]]:A) aligned by [[#Dali|Dali]] with <!--e0b000--><font color="#d0a000"><b>mammalian tubulin</b></font> ([[1tub]]:A). Sequence identity in the structurally aligned regions is about 13%. | ||
*The non-aligned segments are white in the query (FtsZ) and thin in the target (tubulin). This scene is available in [[#Dali|Dali]] except that the target color has been changed to make it more distinct from the red query. (<scene name='Structural_alignment_tools/Dali/2'>Restore initial scene</scene>.) | |||
It is very helpful to color the target alpha carbons by deviation from the query model: red indicates large deviations (poor alignment) while blue indicates small deviations (good alignment), with white indicating average alignment. The stand-alone programs [[#DeepView = Swiss-PDBViewer]] and [[#PyMOL]] color alignments by RMSD but the results cannot be easily exported to Jmol. Surprisingly, none of the servers listed below color their alignments by deviation. Unfortunately, I found NO way to color the alignment by RMSD in Jmol. | It is very helpful to color the target alpha carbons by deviation from the query model: red indicates large deviations (poor alignment) while blue indicates small deviations (good alignment), with white indicating average alignment. The stand-alone programs [[#DeepView = Swiss-PDBViewer]] and [[#PyMOL]] color alignments by RMSD but the results cannot be easily exported to Jmol. Surprisingly, none of the servers listed below color their alignments by deviation. Unfortunately, I found NO way to color the alignment by RMSD in Jmol. | ||
