PDBFile Class Reference

PDBFile parses a Protein Data Bank (PDB) file and constructs a Topology and a set of atom positions from it. More...

List of all members.

Public Member Functions

def __init__
 Load a PDB file.
def getTopology
 Get the Topology of the model.
def getPositions
 Get the atomic positions.
def writeFile
 Write a PDB file containing a single model.
def writeHeader
 Write out the header for a PDB file.
def writeModel
 Write out a model to a PDB file.
def writeFooter
 Write out the footer for a PDB file.

Public Attributes

 topology
 The Topology read from the PDB file.
 positions
 The atom positions read from the PDB file.

Detailed Description

PDBFile parses a Protein Data Bank (PDB) file and constructs a Topology and a set of atom positions from it.

This class also provides methods for creating PDB files. To write a file containing a single model, call writeFile(). You also can create files that contain multiple models. To do this, first call writeHeader(), then writeModel() once for each model in the file, and finally writeFooter() to complete the file.


Member Function Documentation

def __init__ (   self,
  file 
)

Load a PDB file.

The atom positions and Topology can be retrieved by calling getPositions() and getTopology().

Parameters:
file (string) the name of the file to load
def getPositions (   self,
  asNumpy = False 
)

Get the atomic positions.

Parameters:
asNumpy (boolean=False) if true, the values are returned as a numpy array instead of a list of Vec3s
def getTopology (   self  ) 

Get the Topology of the model.

def writeFile (   topology,
  positions,
  file = sys.stdout,
  modelIndex = None 
)

Write a PDB file containing a single model.

Parameters:
topology (Topology) The Topology defining the model to write
positions (list) The list of atomic positions to write
file (file=stdout) A file to write to
def writeFooter (   topology,
  file = sys.stdout 
)

Write out the footer for a PDB file.

Parameters:
topology (Topology) The Topology defining the molecular system being written
file (file=stdout) A file to write the file to
def writeHeader (   topology,
  file = sys.stdout 
)

Write out the header for a PDB file.

Parameters:
topology (Topology) The Topology defining the molecular system being written
file (file=stdout) A file to write the file to
def writeModel (   topology,
  positions,
  file = sys.stdout,
  modelIndex = None 
)

Write out a model to a PDB file.

Parameters:
topology (Topology) The Topology defining the model to write
positions (list) The list of atomic positions to write
file (file=stdout) A file to write the model to
modelIndex (int=None) If not None, the model will be surrounded by MODEL/ENDMDL records with this index

Member Data Documentation

The atom positions read from the PDB file.

The Topology read from the PDB file.


The documentation for this class was generated from the following file:

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