Network Analysis
Perform correlation analysis on the PyContact interactions/features and outputs the results in such a way that it can easily be read into various network/correlation based analyses tools in different programs.
There is only a single class in this module (CorrelationNetwork) as this module does not require a target variable and if you have one it does not need it.
CorrelationNetwork
dataclass
Handles the correlation analysis on PyContact datasets. Does not require or make use of class labels (i.e., dataset can be unsupervised).
Attributes
pd.DataFrame
Input Dataframe containing all features to be studied.
pd.DataFrame
Correlation matrix for the dataset provided.
Methods
gen_res_contact_matrix(out_file) Generate a per residue contact map (matrix) that identifies whether two residues are in contact with each other.
gen_res_correl_matrix(out_file) For every residue to every other residue determine the interaction (if exists) with the strongest correlation between them and use it to build a per residue correlation matrix.
Source code in key_interactions_finder/network_analysis.py
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__post_init__()
Filter features and generate the full correlation matrix.
Source code in key_interactions_finder/network_analysis.py
gen_res_contact_matrix(out_file=None)
Generate a per residue contact map (matrix) that identifies whether two residues are in contact with each other. Two residues considered in contact with one another if they share an interaction (i.e. a column name).
Parameters
Optional[str]
Path to save the corelation matrix to. If left empty no file is saved.
Returns
np.ndarray A symmetrical matrix (along diagonal) of 1s (in contact) and 0s (not in contact).
Source code in key_interactions_finder/network_analysis.py
gen_res_correl_matrix(out_file=None)
For every residue to every other residue determine the interaction (if exists) with the strongest correlation between them and use it to build a per residue correlation matrix.
Parameters
Optional[str]
Path to save the corelation matrix to. If left empty no file is saved.
Returns
np.ndarray A symmetrical matrix (along diagonal) of correlations between each residue.
Source code in key_interactions_finder/network_analysis.py
heavy_atom_contact_map_from_multiple_pdbs(pdb_files, first_res, last_res, d_cut=4.5, out_file=None)
Use MDAnalysis to generate a heavy atom contact map/matrix given a list of PDB files. If 'out_file' specified the result will be saved to disk.
Parameters
list
Paths to PDB files to generate the contact map from.
int
First residue number to use for the contact map.
int
Last residue number to use for the contact map.
Optional[float]
Distance cut-off in Å. Default is 4.5 Å.
Optional[str]
Path to save the contact map file to. If left empty no file is saved.
Returns
np.ndarray Symmetrical (along diagonal) matrix of 1s (in contact) and 0s (not in contact).
Source code in key_interactions_finder/network_analysis.py
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heavy_atom_contact_map_from_pdb(pdb_file, first_res, last_res, d_cut=4.5, out_file=None)
Use MDAnalysis to generate a heavy atom contact map/matrix given a single PDB file. If 'out_file' specified the result will be saved to disk.
Parameters
str
Path to PDB file to generate the contact map from.
int
First residue number to use for the contact map.
int
Last residue number to use for the contact map.
Optional[float]
Distance cut-off in Å. Default is 4.5 Å.
Optional[str]
Path to save the contact map file to. If left empty no file is saved.
Returns
np.ndarray Symmetrical (along diagonal) matrix of 1s (in contact) and 0s (not in contact).