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BIAPSS

BioInformatic Analysis of LLPS Sequences
CITE: BIAPSS - Bioinformatic analysis of liquid-liquid phase separation protein sequences.
A.E. Badaczewska-Dawid, V.N. Uversky, D.A. Potoyan, 2021.

More About BIAPSS

Liquid-liquid phase separation of partially or fully disordered proteins has recently emerged as the critical mechanism underlying cellular order and regulation in biology. A significant knowledge gap, however, remains before we can unlock the sequence "codes" of phase-separation, thereby paving the way for the design of new medically and synthetically relevant phase separating sequences. To address this concern, we are compiling a centralized repository of sequence-based analysis for LLPS proteins to learn about the biophysics of protein phase-separation in a data-driven way.

BIAPSS is a comprehensive web platform for interactive statistical analysis of liquid-liquid phase-separated biological systems deposited in PhaSePro and LLPSDB databases. The comparison and consensus of a plethora of proven bioinformatic tools provides a thorough and up to date description of various properties of proteins based on their amino acid sequence.
The results of the analysis can be visualized and downloaded both as publication-quality images as well as raw data for further analysis. We believe that the open access and open-source nature of our database will facilitate the work of other researchers and accelerate further progress towards uncovering the molecular basis of LLPS phenomena.

SingleSEQ - explore single sequence analysis

Analyze individual protein sequence characteristics for inferring phase-separating affinities and for identifying "sticky" fragments.

MultiSEQ - discover insight into the LLPS superset

Get a broad overview of comparative biophysical statistics for experimentally evidenced phase separating protein sequences.

Download - profit from precomputed data repository

Use the standardized data sets within your LLPS-related research, e.g. design the experimental sequence modifications or perform computer simulations.

What you can learn?

The current version of BIAPSS database includes single sequence analysis (use SingleSEQ tab) of chemical properties (charge decoration patterns, polarity, hydrophobicity, aromaticity); multiple sequence alignment (MSA) with consensus profile and evolutionary conservation; sequence-based predictions of secondary structure, solvent accessibility, structural disorder, and contact maps; detection of SLiMs and tandem repeats. The comprehensive statistics (use MultiSEQ tab) on a set of all known LLPS sequences and their properties gives a deeper glimpse into the mechanism of liquid-liquid phase separation. Below you can get a quick overview (click on the image) of the BIAPSS contents, navigate to the chosen application (use the blue button with the app name) or get in-depth information in the documentation section (use Learn more link).

Who we are?

The PotoyanGroup @ Iowa State University is an interdisciplinary computational group working towards uncovering principles of the biomolecular organization at mesoscopic cellular scales by using statistical mechanics, bioinformatics, simulations, and machine learning techniques. The BIAPSS is an open-source database, pre-computed data repository, and set of analytical apps powered by the Plotly-dash interactive framework, developed by Dr. Aleksandra Badaczewska.
For questions, see the FAQ section or feel free to start the thread in the discussion. We are always grateful to receive your feedback.

Contact Us

       2415 Osborn Dr, Ames, IA 50011

      +1 (515)-294-9971

      abadacz@iastate.edu