---
agentTools:
  projectIndex: https://blobtools.readme.io/llms.txt
---

# Assembly file

Description of assembly file format for use as input files for blobtools

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  "title": "Why is it needed?"
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A genome assembly is a collection of strings representing DNA sequences (contigs, scaffolds, chromosomes, ...) composed of the five letters A,G,C,T and N.

* The assembly file is the genome assembly for which data will be collated by BlobTools

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  "title": "Format"
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* [FASTA](https://en.wikipedia.org/wiki/FASTA_format)

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  "type": "basic",
  "title": "Comments"
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> **Caution**: While parsing a [FASTA](https://en.wikipedia.org/wiki/FASTA_format) file, blobtools will split the [sequence ID](https://en.wikipedia.org/wiki/FASTA_format#Description_line) on the first whitespace it encounters, analogous to the behaviour of other bioinformatic applications.

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