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SE (Seed Extension)

Manual and Example
Input:

The input to the SE is two superimposed structure files, in either PDB format, ASTRAL domain ent format or SHEBA env format. If the structure contains non-standard residues, these are translated to standard ones according to the translation table on the ASTRAL Web site at http://astral.berkeley.edu/raf.html.

Output Options:

The default output is the sequence alignment on the screen. Aligned residues are in Upper case while unaligned ones are in lower case. The secondary structure information of the sequences is shown in different colors: red for alpha-helix, green for beta-sheet and blue for turns. It also gives statistics of the alignment including:

  • the number of residues in the structure,
  • the number of aligned residues,
  • m score: the number of aligned residues / the average number of residues in the two input superimposed structures.
  • ma: the number of aligned residues / the number of residues in the first structure
  • mb: the number of aligned residues / the number of residues in the second structure
  • identical: the number of identical residues among aligned ones.

-fasta to show the statistics and the alignment in FASTA format on screen as well as in a file PDB1-PDB2.fasta.

Example:

statistics and alignment in FASTA format example

Last updated by Fox, Susan (NIH/NCI) [E] on Jun 22, 2011