---
name: "asn2gb"
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/asn2gb"
---

# asn2gb(1)

convert ASN.1 biological data to a GenBank-style flat format

## NAME

asn2gb - convert ASN.1 biological data to a GenBank-style flat format

## SYNOPSIS

**asn2gb** \[**-**\] \[**-A** *accession*\] \[**-F**\] \[**-a** *asn-type*\] \[**-b**\] \[**-c**\] \[**-d**\] \[**-f** *format*\] \[**-g** *N*\] \[**-h** *N*\] \[**-i** *filename*\] \[**-j** *N*\] \[**-k** *N*\] \[**-l** *filename*\] \[**-m** *mode*\] \[**-n** *filename*\] \[**-o** *filename*\] \[**-p**\] \[**-q** *filename*\] \[**-r**\] \[**-s** *style*\] \[**-t** *N*\] \[**-u** *N*\] \[**-y** *N*\]

## DESCRIPTION

**asn2gb** converts descriptions of biological sequences from NCBI's ASN.1 format to one of several flat-file formats, and is the successor to [**asn2ff**(1)](/asn2ff/1.md).

## OPTIONS

A summary of options is included below.

- **-**

  Print usage message

- **-A** *accession*

  Accession to fetch; may take the form *accession***,***complexity***,***flags* where *complexity* should normally be **0** and a *flags* value of **-1** enables fetching of external features (as with the legacy **-F** option)

- **-F**

  Fetch remote annotations (equivalent to specifying **-A** *accession***,0,-1**)

- **-a** *asn-type*

  ASN.1 Type:

  - \[Single record\]

    - a

    Any (autodetected; default)

  - e

    seq-Entry

  - b

    Bioseq

  - s

    bioseq-Set

  - m

    seq-subMit

  - q

    Catenated

  - \[Release file; components individually processed and freed\]

    - t

    baTch bioseq-set

  - u

    batch seq-sUbmit

- **-b**

  Input file is binary

- **-c**

  Batch file is compressed

- **-d**

  Seq-loc minus strand

- **-f** *format*

  Format:

  - b

    GenBank (default)

  - bp or pb

    GenBank and GenPept

  - e

    EMBL

  - p

    GenPept

  - q

    nucleotide GBSet (XML)

  - r

    protein GBSet (XML)

  - t

    Feature table only

  - x

    nucleotide INSDSet (XML)

  - y

    tiny seq (XML)

  - Y

    FASTA

  - z

    protein INSDSet (XML)

- **-g** *N*

  Bit flags (all default to off):

  - 1

    HTML

  - 2

    XML

  - 4

    ContigFeats

  - 8

    ContigSrcs

  - 16

    FarTransl

- **-h** *N*

  Lock/Lookup Flags (all default to off):

  - 8

    LockProd

  - 16

    LookupComp

  - 64

    LookupProd

- **-i** *filename*

  Input file name (default = stdin)

- **-j** *N*

  Start location (default is 0, beginning of sequence)

- **-k** *N*

  End location (default is 0, end of sequence)

- **-l** *filename*

  Log file

- **-m** *mode*

  Mode:

  - r

    Release

  - e

    Entrez

  - s

    Sequin (default)

  - d

    Dump

- **-n** *filename*

  Asn2Flat Executable (default = asn2flat)

- **-o** *filename*

  Output file name (default = stdout)

- **-p**

  Propagate top descriptors

- **-q** *filename*

  Ffdiff Executable (default = /netopt/genbank/subtool/bin/ffdiff)

- **-r**

  Enable remote fetching

- **-s** *style*

  Style:

  - n

    Normal (default)

  - s

    Segment

  - m

    Master

  - c

    Contig

- **-t** *N*

  Batch:

  - 1

    Report

  - 2

    Sequin/Release

  - 3

    asn2gb SSEC/nocleanup

  - 4

    asn2flat BSEC/nocleanup

  - 5

    asn2gb/asn2flat

  - 6

    asn2gb NEW dbxref/OLD dbxref

  - 7

    oldasn2gb/newasn2gb

  **-u** *N* Custom flags (all default to off):

  - 4

    Hide features

  - 1792

    Hide references

  - 8192

    Hide sources

  - 262144

    Hide translations

- **-y** *N*

  Feature itemID

## AUTHOR

The National Center for Biotechnology Information.

## SEE ALSO

[**asn2all**(1)](/asn2all/1.md), [**asn2asn**(1)](/asn2asn/1.md), [**asn2ff**(1)](/asn2ff/1.md), [**asn2fsa**(1)](/asn2fsa/1.md), [**asn2xml**(1)](/asn2xml/1.md), [**asndhuff**(1)](/asndhuff/1.md), [**insdseqget**(1)](/insdseqget/1.md), /usr/share/doc/libncbi6-dev/asn2gb.txt.gz.