vrnadistance

 

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Function

Calculate distances between RNA secondary structures

Description

This is a port of the Vienna RNA package program RNAdistance.

It reads RNA secondary structures and calculates one or more measures for their dissimilarity, based on tree or string editing (alignment). In addition it calculates a "base pair distance" given by the number of base pairs present in one structure, but not the other. For structures of different length base pair distance is not recommended.

Algorithm

RNAdistance accepts structures in bracket format, where matching brackets symbolize base pairs and unpaired bases are represented by a dot ".", or coarse grained representations where hairpins, interior loops, bulges, multiloops, stacks and external bases are represented by (H), (I), (B), (M), (S), and (E), respectively. These can be optionally weighted. Full structures can be represented in the same fashion using the identifiers (U) and (P) for unpaired and paired bases, respectively.

See the original documentation for the Vienna RNA package http://www.tbi.univie.ac.at/~ivo/RNA/

The program will continue to read new structures until a line consisting of the single character @ or an end of file condition is encountered. Input lines neither containing a valid structure nor starting with > are ignored.

Usage

Here is a sample session with vrnadistance


% vrnadistance -distance "f,h" -doalignment 
Calculate distances between RNA secondary structures
Vienna RNA structures file: rna4.fold
Vienna RNAfold output file [rna4.vrnadistance]: 

Go to the input files for this example
Go to the output files for this example

Command line arguments

Calculate distances between RNA secondary structures
Version: EMBOSS:6.6.0.0

   Standard (Mandatory) qualifiers:
  [-structuresfile]    infile     Vienna RNA structures file
  [-outfile]           outfile    [*.vrnadistance] Vienna RNAfold output file

   Additional (Optional) qualifiers: (none)
   Advanced (Unprompted) qualifiers:
   -distance           menu       [f] Distance types to calculate (Values: f
                                  (Full (tree)); h (HIT (tree)); w (Weighted
                                  coarse (tree)); c (Coarse (tree)); F (Full
                                  (string)); H (HIT (string)); W (Weighted
                                  coarse (string)); C (Coarse (string)); P
                                  (Base pair distance))
   -compare            menu       [p] Distance types to calculate (Values: p
                                  (Pairwise); m (Distance matrix between all
                                  structures); f (Compare all structures to
                                  the first one); c (Compare continuously))
   -schapiro           boolean    [N] Use cost matrix for comparing coarse
                                  structures
   -doalignment        boolean    [N] Alignment showing matching substructures

   Associated qualifiers:

   "-outfile" associated qualifiers
   -odirectory2        string     Output directory

   General qualifiers:
   -auto               boolean    Turn off prompts
   -stdout             boolean    Write first file to standard output
   -filter             boolean    Read first file from standard input, write
                                  first file to standard output
   -options            boolean    Prompt for standard and additional values
   -debug              boolean    Write debug output to program.dbg
   -verbose            boolean    Report some/full command line options
   -help               boolean    Report command line options and exit. More
                                  information on associated and general
                                  qualifiers can be found with -help -verbose
   -warning            boolean    Report warnings
   -error              boolean    Report errors
   -fatal              boolean    Report fatal errors
   -die                boolean    Report dying program messages
   -version            boolean    Report version number and exit

Qualifier Type Description Allowed values Default
Standard (Mandatory) qualifiers
[-structuresfile]
(Parameter 1)
infile Vienna RNA structures file Input file Required
[-outfile]
(Parameter 2)
outfile Vienna RNAfold output file Output file <*>.vrnadistance
Additional (Optional) qualifiers
(none)
Advanced (Unprompted) qualifiers
-distance list Distance types to calculate
f (Full (tree))
h (HIT (tree))
w (Weighted coarse (tree))
c (Coarse (tree))
F (Full (string))
H (HIT (string))
W (Weighted coarse (string))
C (Coarse (string))
P (Base pair distance)
f
-compare list Distance types to calculate
p (Pairwise)
m (Distance matrix between all structures)
f (Compare all structures to the first one)
c (Compare continuously)
p
-schapiro boolean Use cost matrix for comparing coarse structures Boolean value Yes/No No
-doalignment boolean Alignment showing matching substructures Boolean value Yes/No No
Associated qualifiers
"-outfile" associated outfile qualifiers
-odirectory2
-odirectory_outfile
string Output directory Any string  
General qualifiers
-auto boolean Turn off prompts Boolean value Yes/No N
-stdout boolean Write first file to standard output Boolean value Yes/No N
-filter boolean Read first file from standard input, write first file to standard output Boolean value Yes/No N
-options boolean Prompt for standard and additional values Boolean value Yes/No N
-debug boolean Write debug output to program.dbg Boolean value Yes/No N
-verbose boolean Report some/full command line options Boolean value Yes/No Y
-help boolean Report command line options and exit. More information on associated and general qualifiers can be found with -help -verbose Boolean value Yes/No N
-warning boolean Report warnings Boolean value Yes/No Y
-error boolean Report errors Boolean value Yes/No Y
-fatal boolean Report fatal errors Boolean value Yes/No Y
-die boolean Report dying program messages Boolean value Yes/No Y
-version boolean Report version number and exit Boolean value Yes/No N

Input file format

vrnadistance reads any normal sequence USAs.

Input files for usage example

File: rna4.fold

((.(((((((.....))))))).))....((..((((.....)))).)).
.....((((..((((..........)))).)))).....(((....))).

Output file format

vrnadistance outputs a graph to the specified graphics device. outputs a report format file. The default format is ...

Output files for usage example

File: rna4.vrnadistance

f: 26  
(_____(.(((__((((....._____))))_))).))....((..((((.....)))).)).
_.....(_(((..((((..........)))).)))_)_....__.__(((...._)))_.___
h: 32  
(____((U1)((U5_)P7)(U1)P2)(U4)((U2)((U5)P4)(U1)P2)(U1)R1)
((U5)((U2)((U10)P4)(U1)P4)(U5)_____((U4)P3)(U1)_______R1)

Data files

For details of Vienna RNA file formats, see the original documentation http://www.tbi.univie.ac.at/~ivo/RNA/

Notes

None.

References

None.

Warnings

None.

Diagnostic Error Messages

None.

Exit status

It always exits with status 0.

Known bugs

None.

See also

Program name Description
banana Plot bending and curvature data for B-DNA
btwisted Calculate the twisting in a B-DNA sequence
einverted Find inverted repeats in nucleotide sequences
ovrnaalifold Calculate secondary structures for a set of aligned RNAs
ovrnaalifoldpf Calculate secondary structures for a set of aligned RNAs (partition)
ovrnacofold Calculate secondary structures of RNA dimers
ovrnacofoldconc Calculate secondary structures of RNA dimers (concentrations)
ovrnacofoldpf Calculate secondary structures of RNA dimers (partitioning)
ovrnadistance Calculate distances between RNA secondary structures
ovrnaduplex Predict RNA duplex (hybridization) sites and structure
ovrnaeval Calculate energy of RNA sequences with a given secondary structure
ovrnaevalpair Calculate energy of RNA sequences on given secondary structure
ovrnafold Calculate min. energy RNA structure / pair probabilities (partition)
ovrnafoldpf Calculate min. energy RNA structure / pair probabilities
ovrnaheat Calculate specific heat of RNA melting
ovrnainverse Find RNA sequences with a given secondary structure
ovrnalfold Calculate locally stable secondary structures of RNAs
ovrnaplot Draw RNA secondary structures
ovrnasubopt Calculate suboptimal secondary structure of RNA
sirna Find siRNA duplexes in mRNA
vrna2dfold Calculate RNA structures and samples of k,l neighbourhoods
vrnaaliduplex RNA duplex calculation for two sequence alignments
vrnaalifold Calculate secondary structures for a set of aligned RNAs
vrnaalifoldpf Calculate secondary structures for a set of aligned RNAs (partition)
vrnacofold Calculate secondary structures of RNA dimers
vrnacofoldconc Calculate secondary structures of RNA dimers (concentrations)
vrnacofoldpf Calculate secondary structures of RNA dimers (partitioning)
vrnaduplex Predict RNA duplex (hybridization) sites and structure
vrnaeval Calculate energy of RNA sequences with a given secondary structure
vrnaevalpair Calculate energy of RNA sequences on given secondary structure
vrnafold Calculate min. energy RNA secondary structures and pair probabilities
vrnafoldpf Calculate min. energy RNA structures / pair probabilities (partition)
vrnaheat Calculate specific heat of RNA melting
vrnainverse Find RNA sequences with a given secondary structure
vrnalalifoldpf Calculate secondary structures for a set of aligned RNAs (partition)
vrnalfold Calculate locally stable secondary structures of RNAs
vrnalfoldz Calculate locally stable secondary structures of RNAs plus zscore
vrnapkplex Calculate RNA structures plus pseudoknots
vrnaplfold Compute avg. pair probabilities for local base pairs in RNA sequences
vrnaplot Draw RNA secondary structures
vrnasubopt Calculate suboptimal secondary structures of RNAs

Author(s)

This program is an EMBOSS conversion of a program written by Ivo Hofacker as part of his VIENNA package.

Please report all bugs to the EMBOSS bug team (emboss-bug © emboss.open-bio.org) not to the original author.

History

Converted (October 2005) by Alan Bleasby

Target users

This program is intended to be used by everyone and everything, from naive users to embedded scripts.

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