An aa file extension is related to the PAML (Phylogenetic Analysis by Maximum Likelihood) software. An aa file stores some kind of data used by PAML.

There are 4 other file types using
the AA file extension!

aa icon.aa - Audible audio

aa icon.aa - Generic multi-volume CD image

empty icon.aa - Prognosis Automated Analyst document file

empty icon.aa - Unix data

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AA file extension - PAML data

What is aa file? How to open aa files?

File type specification:

Various data file type icon Various data file type

The aa file extension is associated with the PAML (Phylogenetic Analysis by Maximum Likelihood) and used for some its data files.

PAML is a package of programs for phylogenetic analyses of DNA or protein sequences using maximum likelihood. It is maintained and distributed for academic use free of charge by Ziheng Yang.

However vast majority of .aa found are Audible audio books.

Updated: August 22, 2019

The default software associated to open aa file:

PAML icon

PAML  Microsoft Windows software

Company or developer:
Ziheng Yang

PAML (Phylogenetic Analysis by Maximum Likelihood) is package of applications used to phylogenetic analysis of DNA or protein sequences.

Help how to open:

Probably not meant to be accessed by the user.

How to convert:

Probably cannot be converted to anything else.

List of recommended software applications associated to the .aa file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open aa file, edit aa file, convert aa file, view aa file, play aa file etc. (if exist software for corresponding action in File-Extensions.org's database).

Unspecified and all other actions for computer programs working with aa file - PAML data

Click on the software link for more information about PAML. PAML uses aa file type for its internal purposes and/or also by different way than common edit or open file actions (eg. to install/execute/support an application itself, to store application or user data, configure program etc.).

Microsoft Windows:

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