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Sayari

Senior Research Fellow @SNBNCBS

Molecular Simulations | Protein Aggregation

Understanding biomolecular complexity through computation, data and lens of Physics.

Sayari Bhattacharya Profile

About Me

I am a doctoral researcher working at the intersection of statistical physics and molecular modeling.

My work focuses on understanding complex biomolecular processes through simulations and data-driven analysis, with particular interest in protein aggregation and conformational dynamics. I enjoy combining theoretical ideas with practical computational tools to uncover underlying physical principles.

Beyond research, I am driven by curiosity and the pursuit of a meaningful life shaped by science and creativity through photography, nature, and fashion.

I am also a lifelong admirer of Lionel Messi, whose dedication and consistency continue to inspire me.

Core Skills

  • • Molecular Dynamics (GROMACS)
  • • Enhanced Sampling (Metadynamics, REMD)
  • • AI & Deep Learning (Auto-Encoders)

Programming

  • • Python (NumPy, Pandas, SciPy, Matplotlib)
  • • Machine Learning (Clustering, Dimensionality Reduction)

Computational

  • • High-Performance Computing (HPC)
  • • Large-Scale Data Analysis

The Enigma of IDPs

Intrinsically Disordered Proteins (IDPs)

In molecular biology, intrinsically disordered proteins (IDPs) stand apart. Rather than adopting a single stable structure, they exist as dynamic ensembles continuously shifting across a spectrum of conformations. This disorder is a defining feature enabling IDPs to play central roles in signaling, regulation, and phase separation where flexibility and transient interactions are essential. However, this flexibility also makes them vulnerable. Misregulated interactions can lead to pathological assemblies like amyloid fibrils. These systems often undergo disorder to order transitions, which remains an intriguing challenge in modern biophysics.

IDP Ensemble Visualization
Free Energy Landscape

A Physicist’s Perspective on Disorder

IDPs redefine how we model biomolecular systems. Instead of fluctuating around a single energy minimum, they navigate rugged free energy landscapes of many competing low energy states. Their behavior is intrinsically probabilistic and best understood as evolving ensembles. This raises key questions including how disorder gives rise to structure, how molecular sequences shape aggregation pathways, and how stability and dynamics interplay. Answering these requires a unified view of thermodynamics and kinetics. Concepts like entropy, conformational diffusion, and energy barriers are essential tools. IDPs bridge ideas from statistical physics and complex systems, making them a uniquely rich problem at the interface of physics and biology.

Research & Projects

Research Overview

I study how structure and dynamics emerge in complex biomolecular systems, with a focus on IDPs. My work combines computational and statistical approaches to uncover the physical principles underlying their behavior.

Current Research Themes

🧬

Protein Aggregation & Fibril Growth

Understanding the molecular mechanisms of protein aggregation and fibril elongation, with a focus on structural organization, polymorphism, and growth pathways in biomolecular systems, particularly involving intrinsically disordered proteins.

Keywords: aggregation mechanisms, polymorphism, fibril structure, molecular organization

⚙️

Sampling Strategies

Designing efficient, data-driven approaches to explore complex conformational landscapes by directing simulations toward under-sampled and kinetically relevant regions. Employing enhanced sampling methods such as umbrella sampling, metadynamics, and REMD for improved exploration of biomolecular systems.

Keywords: adaptive sampling, enhanced sampling, replica exchange, rare events

📊

Kinetic Modeling

Analyzing biomolecular dynamics through state-based representations to explore transition pathways, metastable states, and long-timescale behavior, supported by statistical and data-driven modeling approaches.

Keywords: state-space models, transition networks, dynamics

🔺

Free Energy Landscapes

Characterizing stability and transitions in biomolecular systems using statistical approaches and enhanced sampling techniques to map underlying energy landscapes and identify relevant conformational states.

Keywords: free energy, thermodynamics, stability, conformational transitions

🤖

AI & Machine Learning

Applying deep learning models (e.g., VAE, CNN-VAE, TVAE) to analyze high-dimensional biomolecular data, focusing on clustering, dimensionality reduction, and learning meaningful low-dimensional structural representations.

Keywords: machine learning, dimensionality reduction, VAE, clustering, representation learning

Publications

M.Sc Projects

Nucleation

Study of Nucleation for Crystallization from Solution

Sep 2022 - Dec 2022

  • Molecular Dynamics techniques on Silver nanoparticles and Supersaturated NaCl solutions.
Sampling

Enhanced Sampling of Rare Events in MD Simulation

Jan 2023 - May 2023

  • Investigated stability of Amyloid fibril systems using Metadynamics.
Galaxy

Initial Mass Function in Galactic Star Forming Region

M.Sc Project

  • Researched and learned about recent features of galactic star formation.

Education & Awards

Academic Journey

2023 - Present

Ph.D. in Computational Biophysics

S.N. Bose National Centre

Investigating Intrinsically Disordered Proteins and aggregation.

2021 - 2023

Master of Science, Physics

S.N. Bose National Centre

Graduated with 86% | 3rd highest scorer.

2018 - 2021

Bachelor of Science, Physics

Jadavpur University

81.67% (CGPA: 8.77) | Top 10 in University.

Honors & Distinctions

🎯

JAM and JEST 2021

Qualified

🌟

DST INSPIRE SHE

Top 1% nationwide.

🎓

GATE-2023

Qualified

🏆

JBNSTS Scholar

Top 50 in the state.

🥇

Best Student '16

West Bengal 10th Board.

Beyond Research

🔭

Stargazing

I find immense joy in gazing at the stars. Participated in Astronomy Camps.

📸

Photography

Capturing lovely moments through the lens of nature photography.

🎨

Painting

A cherished childhood activity that I eagerly resume during moments of respite.

📚

Literature

Immersing myself in a wide array of genres, from science to detective stories.

🎬

Movies & Music

I absolutely love watching movies and also have a deep, enduring interest in music.

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