The FASTA format is text-based for representing sequences. It uses single-letter codes for nucleotides or amino acids. It was created by the FASTA software package. Sequences include an identifier and...
The FASTA format is text-based for representing sequences. It uses single-letter codes for nucleotides or amino acids. It was created by the FASTA software package. Sequences include an identifier and description followed by the sequence data. The format allows names and comments to precede the sequences. Its simplicity enables manipulation and parsing with tools.
A sequence starts with a greater-than character and description. The FASTA format commonly has a .fa, .fna, or .fasta extension. The file may be gzip compressed with a .gzi index file. Tools usually require the FASTA file be BGZF indexed to locate sequences quickly.
The FASTA format became standard to easily transfer sequences. It originated from FASTP software in the 1980s. There are two lines per sequence – the description and sequence. A multifasta file contains multiple sequences.
Most FAS files open in AutoCAD. The format is binary and normally executable. It represents compiled fast-load AutoLISP code.
The FASTQ format extends FASTA. It adds quality scores encoded with each sequence letter. A FASTQ uses four lines per sequence – identifier, sequence letters, repeat identifier, and quality scores.
A FAS file stores nucleic acid and protein sequences in FASTA format. It contains a sequence identification code plus the sequence. FAS files can also hold plaintext genomic data in FASTA format, used...
A FAS file stores nucleic acid and protein sequences in FASTA format. It contains a sequence identification code plus the sequence. FAS files can also hold plaintext genomic data in FASTA format, used by biochemistry students and professionals for bioinformatics.
We have online FAS file extension apps. They allow viewing, editing, converting, merging, splitting and comparing FAS files without installing anything. Click the links to see details for each feature.
The .fas extension relates to Autodesk AutoCAD. AutoLISP, an AutoCAD programming language, is not in AutoCAD LT. The compiled FAS files contain Fast-Load AutoLISP data.
The FAS extension also associates with BroadVision QuickSilver for document sharing. The files store QuickSilver Fast Save Lisp Data.
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