---
name: "stretcher"
section: "1e"
platform: "linux"
package: "emboss"
version: "6.6.0+dfsg-15"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/stretcher"
---

# stretcher(1e)

Needleman-Wunsch rapid global alignment of two sequences

## NAME

stretcher - Needleman-Wunsch rapid global alignment of two sequences

## SYNOPSIS

**stretcher** **-asequence** *sequence* **-bsequence** *sequence* \[**-datafile** *matrix*\] \[**-gapopen** *integer*\] \[**-gapextend** *integer*\] **-outfile** *align*

**stretcher** **-help**

## DESCRIPTION

**stretcher** is a command line program from EMBOSS (“the European Molecular Biology Open Software Suite”). It is part of the "Alignment:Global" command group(s).

## OPTIONS

### Input section

- **-asequence** *sequence*

  - **-bsequence** *sequence*

  - **-datafile** *matrix*

  This is the scoring matrix file used when comparing sequences. By default it is the file 'EBLOSUM62' (for proteins) or the file 'EDNAFULL' (for nucleic sequences). These files are found in the 'data' directory of the EMBOSS installation.

### Additional section

- **-gapopen** *integer*

  Default value: @($(acdprotein)? 12 : 16)

- **-gapextend** *integer*

  Default value: @($(acdprotein)? 2 : 4)

### Output section

- **-outfile** *align*

  ## BUGS

Bugs can be reported to the Debian Bug Tracking system (http://bugs.debian.org/emboss), or directly to the EMBOSS developers (http://sourceforge.net/tracker/?group\_id=93650&atid=605031).

## SEE ALSO

stretcher is fully documented via the **tfm**(1) system.

## AUTHOR

**Debian Med Packaging Team** \<debian-med-packaging@lists.alioth.debian.org\>

Wrote the script used to autogenerate this manual page.

## COPYRIGHT

This manual page was autogenerated from an Ajax Control Definition of the EMBOSS package. It can be redistributed under the same terms as EMBOSS itself.