A ptrack file extension is related to the SAM (Sequence Alignment and Modeling system). A ptrack file stores predict_track data for SAM.
Software that open ptrack file
PTRACK file extension - SAM Predict_track data
What is ptrack file? How to open ptrack files?
File type specification:
The ptrack file extension is associated with SAM (Sequence Alignment and Modeling system).
The ptrack files are created by predict_track. The .ptrack files contain secondary structure (or other second alphabet) predictions for a given sequence based on a primary sequence model, and databases of primary and secondary structure for a group of sequences.
The default software associated to open ptrack file:
Sequence Alignment and Modeling system 
Company or developer:
Richard Hughey - Kevin Karplus - Anders Krogh
Sequence Alignment and Modeling system (SAM) is a collection of fsoftware tools for creating, refining, and using linear hidden Markov models for biological sequence analysis.
The model states can be viewed as representing the sequence of columns in a multiple sequence alignment, with provisions for arbitrary position-dependent insertions and deletions in each sequence. The models are trained on a family of protein or nucleic acid sequences using an expectation-maximization algorithm and a variety of algorithmic heuristics. A trained model can then be used to both generate multiple alignments and search databases for new members of the family.
List of recommended software applications associated to the .ptrack 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 ptrack file, edit ptrack file, convert ptrack file, view ptrack file, play ptrack file etc. (if exist software for corresponding action in File-Extensions.org's database).
Unspecified and all other actions for computer programs working with ptrack file - SAM Predict_track data
Click on the software link for more information about Sequence Alignment and Modeling system. Sequence Alignment and Modeling system uses ptrack 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.).
