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- dna model
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- Data Files:
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- An ideal 24-base pair B-DNA model was provided by Robert Tan.
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- This file was edited to produce two pdb files, one for each strand:
- bdna_1.pdb bdna_2.pdb
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- A secondary structure assignment was made automatically:
- foreach i ( 1 2 )
- pdb-nuc-pdb bdna_$i.pdb bdna_$i.ss
- end
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- The *.ribbons file consists of two filenames:
- ls bdna_1.ss > dna.ribbons
- ls bdna_2.ss >> dna.ribbons
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- This file was then edited to add a special color file, "nucleic.color".
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- The *.coords file consists of two filenames:
- ls bdna_1.pdb > dna.coords
- ls bdna_2.pdb >> dna.coords
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- This file was then edited to add the special "nucleic" keys.
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- The *.model file file was created, then edited to change the menu name:
- pdb-model dna.pdb dna.model
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- The model was displayed at this stage to color and
- select the special "base-Hydrogen bonding" bonds:
- ribbons
- ( display the ribbon, open Ribbon Panel.
- set Sequence Color = "seq",
- set Print Select = "base-H", Print File => dna_bh0.rcyl
- Exit ribbons )
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- This cylinder file was renamed:
- mv dna_bh0.rcyl dna_bh.rcyl
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- The *.bonds file consists of only one filename:
- ls dna_bh.cyl > dna.bonds
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- The complete double-stranded nucleic acid model
- is now ready for display.
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- Image File: dna.rgb
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- The model was displayed with default settings on the Ribbon Panel
- for everything except:
- Sequence Color = "chain"
- Chain Color = "11" ( bdna_1 )
- Chain Color = "16" ( bdna_2 )
- Ribbon Style = "Circle"
- Ribbon Samples = "11"
- The image was saved from the Geom Panel.
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- 10
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