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Table 3 The constructed structure with the smallest RMSD to native for the four tested proteins.

From: Reduction of the secondary structure topological space through direct estimation of the contact energy formed by the secondary structures

Protein

Assignments

Rank

Topology

Shift

Rot

CE

RMSD

1LRE

32066

17

123000

[1, 0, 1]

[5.76, 3.14, 1.57]

-2.004894

4.781

1JW2A

391833

31

12340000

[-1, -1, 1, 0]

[0, 0, 3.66, 5.76]

-1.751024

4.718

1DP3A

98755

16

123000

[-1, 0, -1]

[4.71, 5.23, 1.05]

-2.414033

4.341

1GXGA

192935

5

124000

[-1, 0, 1]

[5.23, 3.66, 2.09]

-2.784552

4.665

  1. Protein: the PDB Id;
  2. Assignments: the total number of assignments with the negative contact energy
  3. Rank: the rank of the structure with the smallest RMSD to native;
  4. Topology: the topology Id, the 1st half of the digits: permutation of the assignment, the last half of the digits: directions (0 or 1) of the assignment for each helix;
  5. Shift: the amino acid position shift from the true helix segment for each assignment, "-" left, "+" right;
  6. Rot: rotation angle around the skeleton axis for each helix, in radian;
  7. CE: Effective contact energy of the constructed helices;
  8. RMSD: the root mean square deviation of the Cα atoms between the constructed candidate structure and the native structure, in Å.