| RNAstructure Classes Version 6.2

Public Member Functions | Private Member Functions | List of all members
ProbScan Class Reference

`#include <ProbScan.h>`

Inheritance diagram for ProbScan:

## Public Member Functions
| ProbScan (std::string sequence, const char *const alphabetName="rna")
| Constructor - user provides a sequence as a c string. More...
| ProbScan (const char filename[], bool from_sequence_file, const char *const alphabetName="rna")
| Constructor - user provides a filename for existing file as a c string. More...
double | probability_of_hairpin (int i, int j)
| Returns probability of a hairpin closed at a specific position. More...
double | probability_of_stemloop (int i, int j, int ip, int jp)
std::vector< hairpin_t > | probability_of_all_hairpins (int min, int max, double threshold)
| Calculates the probabilities of all possible hairpins in this sequence. More...
double | probability_of_internal_loop (int i, int j, int k, int l)
| Returns probability of an internal loop or bulge loop closed at a specific position. More...
std::vector< internal_loop_t > | probability_of_all_internal_loops (double threshold, std::string mode=std::string("both"))
| Calculates the probabilities of all possible internal loops and/or bulge loops in this sequence. More...
double | probability_of_stack (int i, int j)
double | probability_of_helix (const int i, const int j, const int how_many_stacks)
| Calculates probability of an helix at a specific position. More...
std::vector< basestack_t > | probability_of_all_helices (double threshold, int length)
| Calculates the probabilities of all possible helices in this sequence of a specific length. More...
double | probability_of_multibranch_loop (const multibranch_loop_t &mb)
| Calculates probability of a multibranch loop at a specific position. More...
Public Member Functions inherited from RNA
| RNA (const char sequence[], const bool IsRNA=true)
| Constructor - user provides a sequence as a c string. More...
| RNA (const char filepathOrSequence[], const RNAInputType fileType, const char *const alphabetName, const bool allowUnknownBases=false, const bool skipThermoTables=false)
| RNA (const char filepathOrSequence[], const RNAInputType fileType, const Thermodynamics *copyThermo)
| RNA (const char filename[], const RNAInputType fileType, const bool IsRNA=true)
| Constructor - user provides a filename for existing file as a c string. More...
| RNA (const bool IsRNA=true)
int | GetErrorCode () const
| Return an error code, where a return of zero is no error. More...
string | GetFullErrorMessage () const
const string | GetErrorDetails () const
| Returns extended details about the last error. (e.g. error messages produced during file read operations that are otherwise lost.) More...
void | SetErrorDetails (const string &details)
| Set extended details about the last error. (e.g. error messages produced during file read operations that are otherwise lost.) More...
void | SetSequenceLabel (const string &label)
| Set the name of the sequence. (This must be called before structure prediction for it to affect the resulting structures.) More...
string | GetErrorMessageString (const int error) const
| Return error messages based on code from GetErrorCode and other error codes. More...
void | ResetError ()
void | EnsureStructureCapcacity (const int minimumStructures)
| Ensure that at a minumum number of structures have been created. More...
int | SpecifyPair (const int i, const int j, const int structurenumber=1)
| Specify a base pair between nucleotides i and j. More...
int | RemovePairs (const int structurenumber=1, bool removeIfLastStructure=true)
| Remove all the current base pairs in a specified structure. More...
int | RemoveBasePair (const int i, const int structurenumber=1)
| Remove a specified pair in a specified structure. More...
double | CalculateFreeEnergy (const int structurenumber=1, const bool UseSimpleMBLoopRules=false)
| Return the predicted Gibb's free energy change for structure # structurenumber, defaulted to 1. More...
double | ExteriorLoopCorrection (const int structurenumber, const bool UseSimpleMBLoopRules, int min_index, int max_index)
int | WriteThermodynamicDetails (const char filename[], const bool UseSimpleMBLoopRules=false)
| Calculate the folding free energy change for all structures and write the details of the calculation to a file. More...
int | FoldSingleStrand (const float percent=20, const int maximumstructures=20, const int window=5, const char savefile[]="", const int maxinternalloopsize=30, bool mfeonly=false, bool simple_iloops=true, bool disablecoax=false, bool allow_isolated=false)
| Predict the lowest free energy secondary structure and generate suboptimal structures using a heuristic. More...
int | GenerateAllSuboptimalStructures (const float percent=5, const double deltaG=0.6)
| Predict the lowest free energy secondary structure and generate all suboptimal structures. More...
int | MaximizeExpectedAccuracy (const double maxPercent=20, const int maxStructures=20, const int window=1, const double gamma=1.0)
| Predict the structure with maximum expected accuracy and suboptimal structures. More...
int | PartitionFunction (const char savefile[]="", double temperature=-10.0, bool disablecoax=false, bool restoreSHAPE=true, bool allowisolated=false, int maxinter=30)
| Predict the partition function for a sequence. More...
int | Rsample (const vector< double > &experimentalRestraints, RsampleData &refdata, const int randomSeed=0, const char savefile[]="", const double cparam=0.5, const double offset=1.10, const int numsamples=10000)
int | PredictProbablePairs (const float probability=0)
| Predict structures containing highly probable pairs. More...
int | ProbKnot (int iterations=1, int MinHelixLength=1, double threshold=0)
| Predict maximum expected accuracy structures that contain pseudoknots from either a sequence or a partition function save file. More...
int | ProbKnotFromSample (int iterations=1, int MinHelixLength=1, double threshold=0)
| Predict maximum expected accuracy structures that contain pseudoknots from a file containing ensemble of structures. More...
int | ReFoldSingleStrand (const float percent=20, const int maximumstructures=20, const int window=5)
| Re-predict the lowest free energy secondary structure and generate suboptimal structures using a heuristic. More...
int | Stochastic (const int structures=1000, const int seed=1)
| Sample structures from the Boltzman ensemable. More...
int | ForceDoubleStranded (const int i)
| Force a nucleotide to be double stranded (base paired). More...
int | ForceFMNCleavage (const int i)
| Indicate a nucleotide that is accessible to FMN cleavage (a U in GU pair). More...
int | ForceMaximumPairingDistance (const int distance)
| Force a maximum distance between apired nucleotides. More...
int | ForceModification (const int i)
| Force modification for a nucleotide. More...
int | ForcePair (const int i, const int j)
| Force a pair between two nucleotides. More...
int | ForceProhibitPair (const int i, const int j)
| Prohibit a pair between two nucleotides. More...
int | ForceSingleStranded (const int i)
| Force a nucleotide to be single stranded. More...
int | GetForcedDoubleStranded (const int constraintnumber)
| Return a nucleotide that is forced double stranded. More...
int | GetForcedFMNCleavage (const int constraintnumber)
| Return a nucleotide that is accessible to FMN cleavage. More...
int | GetForcedModification (const int constraintnumber)
| Return a nucleotide that is accessible to modification. More...
int | GetForcedPair (const int constraintnumber, const bool fiveprime)
| Return a nucleotide in a forced pair. More...
int | GetForcedProhibitedPair (const int constraintnumber, const bool fiveprime)
| Return a nucleotide in a prohibited pair. More...
int | GetForcedSingleStranded (const int constraintnumber)
| Return a nucleotide that is forced single stranded. More...
int | GetMaximumPairingDistance ()
| Return the maximum pairing distance. More...
int | GetNumberOfForcedDoubleStranded ()
| Return the number of nucletides forced to be paired. More...
int | GetNumberOfForcedFMNCleavages ()
| Return the number of nucleotides accessible to FMN cleavage. More...
int | GetNumberOfForcedModifications ()
| Return the number of nucleotides accessible to chemical modification. More...
int | GetNumberOfForcedPairs ()
| Return the number of forced base pairs. More...
int | GetNumberOfForcedProhibitedPairs ()
| Return the number of prohibited base pairs. More...
int | GetNumberOfForcedSingleStranded ()
| Return the number of nucleotides that are not allowed to pair. More...
int | ReadConstraints (const char filename[])
| Read a set of folding constraints to disk in a plain text file. More...
int | ReadSHAPE (const char filename[], const double slope, const double intercept, RestraintType modifier=RESTRAINT_SHAPE, const bool IsPseudoEnergy=true)
| Read SHAPE data from disk. More...
int | ReadSHAPE (const char filename[], const double dsSlope, const double dsIntercept, const double ssSlope, const double ssIntercept, RestraintType modifier=RESTRAINT_SHAPE)
| Read SHAPE data from disk including single-stranded SHAPE pseudo free energys. More...
int | ReadDMS (const char filename[], const bool bynt=false)
int | ReadDSO (const char filename[])
| Read double strand offset data from disk. More...
int | ReadSSO (const char filename[])
| Read single strand offset data from disk. More...
int | ReadExperimentalPairBonus (const char filename[], double const experimentalOffset, double const experimentalScaling)
| Read experimental pair bonuses from disk. More...
void | RemoveConstraints ()
| Remove all folding constraints. More...
void | SetConstraints (vector< int > ss)
int | SetExtrinsic (int i, int j, double k)
| Add extrinsic restraints for partition function calculations. More...
int | WriteConstraints (const char filename[])
| Write the current set of folding constraints to disk in a plain text file. More...
int | AddComment (const char comment[], const int structurenumber=1)
| Add a comment associated with a structure. More...
int | WriteCt (const char filename[], bool append=false, CTCommentProvider &commentProvider=CTComments::Energy) const
| Write a ct file of the structures. More...
int | WriteDotBracket (const char filename[], const int structurenumber=-1, const DotBracketFormat format=DBN_FMT_MULTI_TITLE, CTCommentProvider &commentProvider=CTComments::Energy) const
| Write dot-bracket file of structures. More...
int | BreakPseudoknot (const bool minimum_energy=true, const int structurenumber=0, const bool useFastMethod=true)
| Break any pseudoknots that might be in a structure. More...
bool | ContainsPseudoknot (const int structurenumber)
| Report if there are any pseudoknots in a structure. More...
double | GetEnsembleEnergy ()
| Get the ensemble folding free energy change. More...
double | GetEnsembleDefect (const int structurenumber=1, const int start=0, const int end=0, const char filename[]="")
| Get the ensemble defect of a secondary structure. More...
double | GetFreeEnergy (const int structurenumber)
| Get the folding free energy change for a predicted structure. More...
int | GetPair (const int i, const int structurenumber=1)
| Get the nucleotide to which the specified nucleotide is paired. More...
double | GetPairEnergy (const int i, const int j)
| Get the lowest folding free energy possible for a structure containing pair i-j. More...
double | GetPairProbability (const int i, const int j)
| Get a base pair probability. More...
int | GetPairProbabilities (double *arr, const int size)
int | GetStructureNumber () const
| Get the total number of specified or predicted structures. More...
int | DetermineDrawingCoordinates (const int height, const int width, const int structurenumber=1)
| Determine the coordinates for drawing a secondary structure. More...
std::string | GetCommentString (const int structurenumber=1)
| Provide the comment from the ct file as a string. More...
int | GetNucleotideXCoordinate (const int i)
| Get the X coordinate for nucleotide i for drawing a structure. More...
int | GetNucleotideYCoordinate (const int i)
| Get the Y coordinate for nucleotide i for drawing a structure. More...
int | GetLabelXCoordinate (const int i)
| Get the X coordinate for placing the nucleotide index label specified by i. More...
int | GetLabelYCoordinate (const int i)
| Get the Y coordinate for placing the nucleotide index label specified by i. More...
char | GetNucleotide (const int i)
int | GetSequenceLength () const
| Get the total length of the sequence. More...
const char * | GetSequence () const
std::string | GetSequence (size_t start, size_t length=std::string::npos) const
bool | GetBackboneType () const
| Get the backbone type. More...
double | GetVprimeQ (const int i, const int j)
double | GetW (const int i, const int j)
structure * | GetStructure ()
void | SetProgress (ProgressHandler &Progress)
void | StopProgress ()
ProgressHandler * | GetProgress ()
| ~RNA ()
| Destructor. More...
void | CopyThermo (Thermodynamics &copy)
| Copy thermodynamic parameters from an instance of an RNA class. More...
Public Member Functions inherited from Thermodynamics
| Thermodynamics (const bool isRNA=true, const char *const alphabetName=NULL, const double temperature=310.15)
| Thermodynamics (const Thermodynamics &copyThermo)
int | SetTemperature (double temperature)
| Set the temperature of folding in K. More...
double | GetTemperature () const
string | GetAlphabetName () const
| Get the name of the extended alphabet for which thermodynamic parameters should be loaded. More...
int | ReadThermodynamic (const char *directory=NULL, const char *alphabet=NULL, const double temperature=-1.0)
| Function to read the thermodynamic parameters. More...
int | ReloadDataTables (const double new_temperature=-1.0)
bool | VerifyThermodynamic ()
| Force the datatables to be read if they haven't already. Return true if the tables were already loaded or if the attempt to (re)open them succeded. More...
datatable * | GetDatatable ()
datatable * | GetEnthalpyTable (const char *alphabet=NULL)
void | ClearEnergies ()
| Clear the currently loaded energy datatable and release its resources. More...
void | ClearEnthalpies ()
| Clear the currently loaded enthalpy datatable and release its resources. More...
bool | GetEnergyRead () const
| Return whether this instance of Thermodynamics has the paremters populated (either from disk or from another Thermodynamics class). More...
bool | IsAlphabetRead () const
| ~Thermodynamics ()

## Private Member Functions
PFPRECISION | equilibrium_constant_for_multibranch_loop (const multibranch_loop_t &)
std::vector< mb_element > | construct_mb_element_array (const multibranch_loop_t &)

## Additional Inherited Members
Static Public Member Functions inherited from RNA
static const char * | GetErrorMessage (const int error)
| Return error messages based on code from GetErrorCode and other error codes. More...
Public Attributes inherited from Thermodynamics
bool | isrna
Protected Member Functions inherited from RNA
int | FileReader (const char filename[], const RNAInputType fileType)
void | init (const char *sequenceOrFileName, const RNAInputType fileType, const bool allowUnknownBases=false, const bool skipThermoTables=false)
Protected Member Functions inherited from Thermodynamics
virtual void | CopyThermo (const Thermodynamics &copy)
| Copy thermodynamic parameters from an instance of Thermodynamics class. More...
Protected Attributes inherited from RNA
int | ErrorCode
ProgressHandler * | progress
PFPRECISION * | w5
PFPRECISION * | w3
PFPRECISION ** | wca
pfdatatable * | pfdata
DynProgArray< PFPRECISION > * | w
DynProgArray< PFPRECISION > * | v
DynProgArray< PFPRECISION > * | wmb
DynProgArray< PFPRECISION > * | wl
DynProgArray< PFPRECISION > * | wmbl
DynProgArray< PFPRECISION > * | wcoax
DynProgArray< PFPRECISION > * | wlc
PFPRECISION | Q
Protected Attributes inherited from Thermodynamics
datatable * | data
datatable * | enthalpy
bool | copied
double | nominal_temperature
string | nominal_alphabetName
bool | skipThermoTables

## Constructor & Destructor Documentation

## ◆ ProbScan() [1/2]

ProbScan::ProbScan | ( | std::string | sequence,
|  | const char *const | alphabetName = `"rna"`
| ) |  |

Constructor - user provides a sequence as a c string.

The partition function will be calculated. If the sequence is long, this may take some time. Capitalization makes no difference. Note that sequences will subsequently be indexed starting at 1 (like a biologist), so that the 0th position in the sequence array will be nucleotide 1.

Parameters

  sequence | is a NULL terminated c string containing the nucleotide sequence.
  alphabetName | is a cstring that indicates the folding libary, where the default, "rna", is the standard RNA parameters.

## ◆ ProbScan() [2/2]

ProbScan::ProbScan | ( | const char | filename[],
|  | bool | from_sequence_file,
|  | const char *const | alphabetName = `"rna"`
| ) |  |

Constructor - user provides a filename for existing file as a c string.

The existing file, specified by filename, can either be a a sequence file or an RNAstructure partition function save file. Therefore, the user provides a flag for the file:from_sequence_file true => .seq or .fasta file, false => partition function save (.pfs) file. If the input file is a sequence the partition function will be calculated. If the sequence is long, this may take some time. This constructor generates internal error codes that can be accessed by GetErrorCode() after the constructor is called. 0 = no error. The errorcode can be resolved to a c string using GetErrorMessage. If a sequence filename is provided, the contructor needs to be explicitly told the folding alphabet, via alphabetName, because files do not store this information. Note also that save files explicitly store the thermodynamic parameters, therefore changing the backbone type as compared to the original calculation will not change structure predictions.

Parameters

  filename | is null terminated c string containing the path to the input file.
  from_sequence_file | is a bool which tells the constructor whether we are initializing from a sequence file, in which case the partition function must be calculated
  alphabetName | is a cstring that indicates the folding libary, where the default, "rna", is the standard RNA parameters.

## Member Function Documentation

## ◆ construct_mb_element_array()

vector< mb_element > ProbScan::construct_mb_element_array | ( | const multibranch_loop_t & | mb | ) |
| private

## ◆ equilibrium_constant_for_multibranch_loop()

PFPRECISION ProbScan::equilibrium_constant_for_multibranch_loop | ( | const multibranch_loop_t & | mb | ) |
| private

## ◆ probability_of_all_hairpins()

vector< hairpin_t > ProbScan::probability_of_all_hairpins | ( | int | min,
|  | int | max,
|  | double | threshold
| ) |  |

Calculates the probabilities of all possible hairpins in this sequence.

Parameters

  min | The minimum size of a hairpin
  max | The maximum size of a hairpin
  threshold | The minimum probability for candidate hairpins

Returns
  A vector of hairpin objects, containing the positions of the hairpins and their probabilities

## ◆ probability_of_all_helices()

std::vector< basestack_t > ProbScan::probability_of_all_helices | ( | double | threshold,
|  | int | length
| ) |  |

Calculates the probabilities of all possible helices in this sequence of a specific length.

Parameters

  threshold | the minimum probability of candidate helices
  length | the number of base pair stacks to search for

Returns
  A vector of helix objects, containing the positions of the helices and their probabilities

## ◆ probability_of_all_internal_loops()

vector< internal_loop_t > ProbScan::probability_of_all_internal_loops | ( | double | threshold,
|  | std::string | mode = `std::string("both")`
| ) |  |

Calculates the probabilities of all possible internal loops and/or bulge loops in this sequence.

Parameters

  threshold | the minimum probability of candidate loops
  mode | a string which indicates what type of loops should be searched for. Allowed values are "internal", "bulge", and "both"

Returns
  A vector of internal loop objects, containing the positions of the loops and their probabilities

## ◆ probability_of_hairpin()

double ProbScan::probability_of_hairpin | ( | int | i,
|  | int | j
| ) |  |

Returns probability of a hairpin closed at a specific position.

Parameters

  i | The 5' nucleotide closing the hairpin
  j | The 3' nucleotide closing the hairpin

Returns
  A double containing the probability of the hairpin

## ◆ probability_of_helix()

double ProbScan::probability_of_helix | ( | const int | i,
|  | const int | j,
|  | const int | how_many_stacks
| ) |  |

Calculates probability of an helix at a specific position.

Parameters

  i | The 5' nucleotide closing the helix on the exterior
  j | The 3' nucleotide closing the helix on the exterior
  how_many_stacks | The number of base pair STACKS in the helix (this is the number of pairs minus 1)

Returns
  A double containing the probability of the helix

## ◆ probability_of_internal_loop()

double ProbScan::probability_of_internal_loop | ( | int | i,
|  | int | j,
|  | int | k,
|  | int | l
| ) |  |

Returns probability of an internal loop or bulge loop closed at a specific position.

Parameters

  i | The 5' nucleotide closing the loop on the exterior
  j | The 3' nucleotide closing the loop on the exterior
  k | The 5' nucleotide closing the loop on the interior
  l | The 3' nucleotide closing the loop on the interior

Returns
  A double containing the probability of the internal loop

## ◆ probability_of_multibranch_loop()

double ProbScan::probability_of_multibranch_loop | ( | const multibranch_loop_t & | mb | ) |

Calculates probability of a multibranch loop at a specific position.

Parameters

  mb | A multibranch loop object, containing a vector of pairs describing the multibranch loop. These can be created with the multibranch_loop function. See the text interface for the ProbScan program for an example of usage.

Returns
  A double containing the probability of the multibranch loop

## ◆ probability_of_stack()

double ProbScan::probability_of_stack | ( | int | i,
|  | int | j
| ) |  |

Calculates probability of a base pair stack closed at a specific position Note that this is a special case of probability_of_helix where the size is set to 1

Parameters

  i | The 5' nucleotide closing the stack
  j | The 3' nucleotide closing the stack

Returns
  A double containing the probability of the stack

## ◆ probability_of_stemloop()

double ProbScan::probability_of_stemloop | ( | int | i,
|  | int | j,
|  | int | ip,
|  | int | jp
| ) |  |

Parameters

  i | The 5' nucleotide closing the hairpin
  j | The 3' nucleotide closing the hairpin
  ip | The 5'-most nucleotide closing the stem
  jp | The 3'-most nucleotide closing the stem

Returns
  A double containing the probability of the hairpin stem-loop

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

- RNA_class/ProbScan.h
- RNA_class/ProbScan.cpp