... alignment.2.1
  If the residue type is defined in `'modlib/restyp.lib'` you can use the 1-letter code that is specified there, but if in doubt use '.', since that matches everything.

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... assigned2.2
  After uppercase letters A-Z are used, chain IDs 0 through 9 are assigned, then lowercase letters a-z. If your protein contains more than 62 chains, the remaining chains are given no IDs.

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... restraints2.3
  The restraints include bond, angle and dihedral angle restraints. The SG — SG atom pair also becomes an excluded atom pair that is not checked for an atom-atom overlap. The dihedral angle restraints will depend on the conformation of the equivalent disulfides in the template structure, as described in [Šali & Overington, 1994].

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... exception5.1
  MODELLER can raise the following Python exceptions: `ZeroDivisionError`, `IOError`, `MemoryError`, `EOFError`, `TypeError`, `NotImplementedError`, `UnicodeError`, `IndexError`, and `ValueError`.

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... special.5.2
  On Unix/Linux systems, MODELLER assumes that your filesystem also stores filenames in UTF-8. This is usually the case on modern systems; however, you can change the encoding by setting the `G_FILENAME_ENCODING` environment variable.

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... library6.1
  If no atoms in the first chain have coordinates, internal coordinate generation is seeded by placing the first atom at the origin, the second along the x axis, and the third in the xy plane. If no atoms in subsequent chains have coordinates, the first atom is placed 2 angstroms along each of the x, y and z axes from the last atom in the previous chain, and the second and third atoms placed in the same way as for the first chain.

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... communication)6.2
  Fractional surface area of a residue X is given as the calculated surface area divided by that of the residue in an extended tripeptide Ala-X-Ala conformation.

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... scores6.3
  The mean and standard deviation of the DOPE score of a given protein is estimated from its sequence. The mean score of a random protein conformation is estimated by a weighted sum of protein composition over the 20 standard amino acid residue types, where each weight corresponds to the expected change in the score by inserting a specific type of amino acid residue. The weights are estimated from a separate training set of 1,686,320 models generated by MODPIPE.

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... 6.4
  The target distances were all obtained from a regular α -helix in one of the high-resolution myoglobin structures.

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...http://www.ks.uiuc.edu/Research/vmd/. 6.5
  Note that binary trajectory files are machine dependent; it is up to the visualization software to do any necessary byte-swapping.

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...`'m'` 6.6
  Note that `'m.chains['A'].residues['10']'` in most cases is the same as `'m.residues['10:A']'`. However, if there are multiple chains in the model called 'A' the first syntax will return residue 10 in the first chain called A (and so will fail if that chain does not contain this residue) whereas the second will look for the first residue numbered 10 in any of the A chains. (Generally speaking, you should avoid having duplicate chain IDs or residue numbers!)

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