pigeon_feather.data.RangeList

class pigeon_feather.data.RangeList(range_list_file=None, range_df=None)
__init__(range_list_file=None, range_df=None)

A class to handle a list of peptides.

Parameters:

  • range_list_file – csv file with Start, End columns

  • range_df – a dataframe

Variables:

  • range_list – a dataframe with Start, End columns

  • range_set – a set of tuples (Start, End)

Methods

to_set()

convert the range list to a set of tuples (Start, End)

to_dataframe()

return the range list as a dataframe

to_csv(path)

save the range list to a csv file

union(other)

return the union of two range lists

intersection(other)

return the intersection of two range lists

difference(other)

return the difference of two range lists

pigeon_feather.data.HDXMSDataCollection

class pigeon_feather.data.HDXMSDataCollection(hdxms_data_list)
__init__(hdxms_data_list)

A cloolection of HDXMSData objects

Parameters:

hdxms_data_list – a list of HDXMSData objects

pigeon_feather.data.HDXMSData

class pigeon_feather.data.HDXMSData(protein_name, n_fastamides=2, protein_sequence=None, saturation=1)
__init__(protein_name, n_fastamides=2, protein_sequence=None, saturation=1)

A class to store one HDX-MS replicate data. It can contain multiple states.

Parameters:

  • protein_name – string, name of the protein

  • n_fastamides – int, defaults to 2

  • protein_sequence – string

  • saturation – D saturation, defaults to 1

Variables:

states – a list of ProteinState objects

Methods

add_state(state)

add a state to the HDXMSData object

load_protein_sequence(sequence)

load protein sequence to the HDXMSData object

get_state(state_name)

return a state by name

plot_res_coverage()

plot residue coverage of the protein

reindex_peptide_from_pdb(pdb_file[, ...])

reindex peptides based on the pdb file, aften there is a index offset.

to_dataframe([if_percent])

convert the HDXMSData object to a dataframe

to_bayesianhdx_format([OUTPATH])

convert the HDXMSData object to BayesianHDX format and save to a file

Attributes

num_states

return the number of states in the HDXMSData object

pigeon_feather.data.ProteinState

class pigeon_feather.data.ProteinState(state_name, hdxms_data=None)
__init__(state_name, hdxms_data=None)

A class to store one state of a protein. It can contain multiple peptides.

Parameters:

  • state_name – name of the state

  • hdxms_data – HDXMSData object

Variables:

  • peptides – a list of Peptide objects

  • if_subtracted – if subtracted peptides have been added

  • num_subtracted_added – number of subtracted peptides added

Methods

add_peptide(peptide)

add a peptide to the ProteinState object

num_peptides

return the number of peptides in the ProteinState

get_peptide(identifier)

return a peptide by identifier

add_new_peptides_by_subtract()

add new peptides to the protein state by subtracting the overlapped peptides

add_all_subtract()

add all possible subtracted peptides to the protein state

pigeon_feather.data.Peptide

class pigeon_feather.data.Peptide(raw_sequence, raw_start, raw_end, protein_state=None, n_fastamides=0, RT=None)
__init__(raw_sequence, raw_start, raw_end, protein_state=None, n_fastamides=0, RT=None)

A class to store one peptide. It can contain multiple timepoints.

Parameters:

  • raw_sequence – peptide sequence

  • raw_start – peptide start residue number, including fastamides, 1-based

  • raw_end – peptide end residue number, including fastamides, 1-based

  • protein_state – ProteinState it belongs to

  • n_fastamides – number of fastamides

Variables:

  • identifier – used for peptide identification, raw sequence including fastamides, e.g. “1-10 ABCDEFGHIJ”

  • sequence – peptide sequence excluding fastamides, 1-based

  • start – peptide start residue number excluding fastamides, 1-based

  • end – peptide end residue number, 1-based

  • timepoints – a list of Timepoint objects

  • note – a note for the peptide

Methods

add_timepoint(timepoint)

add a timepoint to the peptide

get_deut(deut_time)

return deuterium num at a specific deuteration time

get_deut_percent(deut_time)

return normalized deuterium incorporation at a specific deuteration time

get_timepoint(deut_time[, charge_state])

return a timepoint by deuteration time and charge state

pigeon_feather.data.Timepoint

class pigeon_feather.data.Timepoint(peptide, deut_time, num_d, stddev, charge_state=None)
__init__(peptide, deut_time, num_d, stddev, charge_state=None)

A class to store one timepoint of a peptide.

Parameters:

  • peptide – Peptide object it belongs to

  • deut_time – deuteration time

  • num_d – number of deuterium incorporated

  • stddev – standard deviation of the number of deuterium incorporated

  • charge_state – charge state

Methods

load_raw_ms_csv(csv_file)

load raw mass spec data from a HDExaminer csv file

pigeon_feather.HDXStatePeptideCompares

class pigeon_feather.data.HDXStatePeptideCompares(state1_list, state2_list)
__init__(state1_list, state2_list)

A class to compare peptides between two states.

Parameters:

  • state1_list – a list of ProteinState objects

  • state2_list – a list of ProteinState objects

Methods

add_all_compare()

add all possible peptide compares between two states

to_dataframe()

convert the HDXStatePeptideCompares object to a dataframe

pigeon_feather.PeptideCompare

class pigeon_feather.data.PeptideCompare(peptide1_list, peptide2_list)
__init__(peptide1_list, peptide2_list)

A class to compare one peptide between two states.

Parameters:

  • peptide1_list – a list of Peptide objects

  • peptide2_list – a list of Peptide objects

Raises:

ValueError – if peptides have different sequences

Methods

get_deut_diff(timepoint)

deuterium difference between two peptides at a specific timepoint

pigeon_feather.HDXStateResidueCompares

class pigeon_feather.data.HDXStateResidueCompares(resids, state1_list, state2_list)
__init__(resids, state1_list, state2_list)

A class to compare pseudo residues between two states.

Parameters:

  • resids – a list of residue numbers

  • state1_list – a list of ProteinState objects

  • state2_list – a list of ProteinState objects

Methods

add_all_compare()

add all possible residue compares between two states

get_residue_compare(resid)

return a residue compare by residue number

pigeon_feather.ResidueCompare

class pigeon_feather.data.ResidueCompare(resid, state1_list, state2_list)
__init__(resid, state1_list, state2_list)

A class to compare one pseudo residue between two states.

Parameters:

  • resid – residue number, 1-based

  • state1_list – a list of ProteinState objects

  • state2_list – a list of ProteinState objects

Methods

find_peptides_containing_res(state_list)

find peptides containing the residue in a state list

get_deut_diff(timepoint)

deuterium difference between two residues at a specific timepoint

pigeon_feather.SimulatedData

class pigeon_feather.data.SimulatedData(length=100, seed=42, noise_level=0, saturation=1.0, random_backexchange=False)
__init__(length=100, seed=42, noise_level=0, saturation=1.0, random_backexchange=False)

A class to generate simulated HDX-MS data.

Parameters:

  • length – protein length, defaults to 100

  • seed – random seeds, defaults to 42

  • noise_level – noise add to the isotopic envelope

Methods

gen_seq()

generate a random protein sequence of the given length

gen_logP()

cal_k_init()

calculate intrinsic exchange rate for each residue

cal_k_ex()

calculate exchange rate for each residue

calculate_incorporation()

calculate deuterium incorporation for each residue

gen_peptides([min_len, max_len, ...])

generate random peptides from the protein sequence

convert_to_hdxms_data()

convert the simulated data to a HDXMSData object

pigeon_feather.plot.UptakePlotsCollection

class pigeon_feather.plot.UptakePlotsCollection(color_dict=None, if_plot_fit=True, pdb_file=None)
__init__(color_dict=None, if_plot_fit=True, pdb_file=None)

A class to store multiple UptakePlot objects

Parameters:

  • color_dict – a dictionary of colors for each state, e.g. {‘state1’: ‘red’, ‘state2’: ‘blue’}

  • if_plot_fit – if True, plot the fit line

Methods

add_plot(hdxms_datas, idf[, ...])

add a UptakePlot of a peptide to the collection

add_plot_all(hdxms_datas)

add UptakePlot objects of all peptides to the collection

save_plots(path)

save all plots to a folder

pigeon_feather.plot.UptakePlot

class pigeon_feather.plot.UptakePlot(hdxms_datas, identifier: str, states_subset=None, color_dict=None, if_plot_fit=True, figure=None, ax=None, if_d_percent=False, exp_only=False)
__init__(hdxms_datas, identifier: str, states_subset=None, color_dict=None, if_plot_fit=True, figure=None, ax=None, if_d_percent=False, exp_only=False)

hdxms_datas: list of class HDXMSData objects

Parameters:

  • hdxms_datas – list of HDXMSData objects

  • identifier – peptide identifier

  • states_subset – list of states to plot

  • color_dict – dictionary of colors for each state

  • if_plot_fit – if True, plot the fit line

  • figure – figure object

  • ax – axis object

Variables:

hdxms_datas_df – pandas DataFrame of the HDX-MS data of the peptide

Methods

make_uptakeplot()

make a uptakeplot for a peptide

get_average_peptide(state_name)

return an averaged peptide for a state

make_title()

make a title for the plot

make_color_dict([color_dict])

make a color dictionary for the states in the plot