Source code for mmtfPyspark.filters.containsDProteinChain
#!/user/bin/env python
'''containsDProteinChain.py
This filter returns entries that contain protein chain(s) made of D-amino acids.
The default constructor returns entries that contain at least one
polymer chain that is an D-protein. If the "exclusive" flag is set to true
in the constructor, all polymer chains must be D-proteins. For a multi-model structure,
this filter only checks the first model.
'''
__author__ = "Mars (Shih-Cheng) Huang"
__maintainer__ = "Mars (Shih-Cheng) Huang"
__email__ = "marshuang80@gmail.com"
__version__ = "0.2.0"
__status__ = "Done"
from mmtfPyspark.filters import ContainsPolymerChainType
[docs]class ContainsDProteinChain(object):
'''Default constructor matches any entry that contains at least one D-protein chain.
As an example a D-protein/DNA complex passes this filter
Optional constructor that can be used to filter entries that exclusively
contain D-protein chains. For example, with "exclusive" set to true, a
D-protein/DNA complex does not pass this filter.
Attributes
----------
exclusive : bool
if true, only return entries that are exclusively contain D-protein chains
'''
def __init__(self, exclusive=False):
self.filter = ContainsPolymerChainType([
ContainsPolymerChainType.D_PEPTIDE_LINKING,
ContainsPolymerChainType.PEPTIDE_LINKING], exclusive=exclusive)
def __call__(self, t):
return self.filter(t)