File Extension FAS

.FAS File

File extension: FAS
File type: DNA and Protein Sequence Alignment


Notes about the FAS file extension:



Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries, unused processes and other unfavourable system settings to identify slowdown issues.

The FAS file type is primarily associated with 'FASTA Format'. FASTA is a DNA and Protein sequence alignment software package first described (as FASTP) by David J. Lipman and William R. Pearson in 1985 in the article Rapid and sensitive protein similarity searches. The original FASTP program was designed for protein sequence similarity searching. FASTA format files often have file extensions like .fa, .mpfa, .fna, .fsa, .fas or .fasta.

Detailed information for file extension FAS:


Primary association: FASTA Format
Identifying characters Hex: 3E , ASCII:
Related links: Wikipedia FASTA Page, Wikipedia FASTA Format Page

Other applications associated with file type FAS:

  • 3D Fassade Plus (Basic Module)
  • AutoCAD (Fast-load Auto LISP) by Autodesk, Inc. The identifying characters used for this association are - Hex: 0D 0A 20 46 41 53 34 2D 46 49 4C 45 20 3B 20 44 6F 20 6E 6F 74 20 63 68 61 6E 67 65 20 69 74 21 0D 0A , ASCII: FAS4-FILE ; Do not change it! Program ID: AutoCADAutoLISPFastLoadFile , AutoCADLTAutoLISPFastLoadFile
  • Common-Lisp (Pre-compiled File)Typically lower case on *nix systems.
  • Macsyma Compiled Program
File Identifier - TrID
'Identifying characters' used on FILExt.com are
provided by Marco Pontello from his TrID database




Important: Invalid file associations could be the result of underlying issues within your Windows PC. It is highly recommended that you scan your PC for invalid registry entries, unused processes and other slowdown issues.

Technical data

To view technical data on file-extension FAS click this link to expand/hide the additional area.

System Info for File Extension .FAS

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and information FILExt collected directly from user systems.

ProgramID: AutoCADAutoLISPFastLoadFile, FileType: AutoCAD Fast-load AutoLISP File

ProgramID: AutoCADLTAutoLISPFastLoadFile, FileType: AutoCAD LT Fast-load AutoLISP File

ProgramID: FMAdvisorInternetDefinitionFile
EXEFile: %ProgramFiles%\Fujitsu\FM Advisor\advcheck.exe /D:%1


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