---
name: "asn2fsa"
section: "1"
platform: "linux"
package: "ncbi-tools-bin"
version: "6.1.20170106+dfsg2-6"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/asn2fsa"
---

# asn2fsa(1)

convert biological sequence data from ASN.1 to FASTA

## NAME

asn2fsa - convert biological sequence data from ASN.1 to FASTA

## SYNOPSIS

**asn2fsa** \[**-**\] \[**-A** *acc*\] \[**-D**\] \[**-E**\] \[**-H**\] \[**-L** *filename*\] \[**-T**\] \[**-a** *type*\] \[**-b**\] \[**-c**\] \[**-d** *path*\] \[**-e** *N*\] \[**-f** *path*\] \[**-g**\] \[**-h** *filename*\] \[**-i** *filename*\] \[**-k**\] \[**-l**\] \[**-m**\] \[**-o** *filename*\] \[**-p** *path*\] \[**-q** *filename*\] \[**-r**\] \[**-s**\] \[**-u**\] \[**-v** *filename*\] \[**-x** *str*\] \[**-y**\] \[**-z**\]

## DESCRIPTION

**asn2fsa** converts biological sequence data from ASN.1 to FASTA.

## OPTIONS

A summary of options is included below.

- **-**

  Print usage message

- **-A** *acc*

  Accession to fetch

- **-D**

  Use Dash for Gap

- **-E**

  Extended Seq-ids

- **-H**

  HTML spans

- **-L** *filename*

  Log file

- **-T**

  Use Threads

- **-a** *type*

  Input ASN.1 type:

  - a

    Automatic (default)

  - z

    Any

  - e

    Seq-entry

  - b

    Bioseq

  - s

    Bioseq-set

  - m

    Seq-submit

  - t

    batch processing (suitable for official releases; autodetects specific type)

- **-b**

  Bioseq-set is Binary

- **-c**

  Bioseq-set is Compressed

- **-d** *path*

  Path to ReadDB Database

- **-e** *N*

  Line length (70 by default; may range from 10 to 120)

- **-f** *path*

  Path to indexed FASTA data

- **-g**

  Expand delta gaps into **N**s

- **-h** *filename*

  Far component cache output file name

- **-i** *filename*

  Single input file (standard input by default)

- **-k**

  Local fetching

- **-l**

  Lock components in advance

- **-m**

  Master style for near segmented sequences

- **-o** *filename*

  Nucleotide Output file name

- **-p** *path*

  Path to ASN.1 Files

- **-q** *filename*

  Quality score output file name

- **-r**

  Remote fetching from NCBI

- **-s**

  Far genomic contig for quality scores

- **-u**

  Recurse

- **-v** *filename*

  Protein output file name

- **-x** *str*

  File selection substring (**.ent** by default) \[String\]

- **-y**

  Debugging

- **-z**

  Print quality score gap as -1

## AUTHOR

The National Center for Biotechnology Information.

## SEE ALSO

[**asn2all**(1)](/asn2all/1.md), [**asn2asn**(1)](/asn2asn/1.md), [**asn2ff**(1)](/asn2ff/1.md), [**asn2gb**(1)](/asn2gb/1.md), [**asn2xml**(1)](/asn2xml/1.md), [**asndhuff**(1)](/asndhuff/1.md).