Mapping how water, ions, and weak interactions shape molecular recognition.

About

Structure, hydration, and molecular recognition

We study how molecules recognize, bind, and organize in water and in the solid state. Our research connects crystallography, thermodynamics, and atomistic simulations to understand how weak interactions, hydration, and ions shape molecular structure and function.

Rather than treating water as a passive background, we focus on hydration as an active part of molecular recognition. By combining crystal structures, calorimetry, and molecular dynamics, we investigate how competing hydrated states contribute to binding affinity, protonation effects, and the apparent thermodynamics observed in solution.

Our group

Group photo - Si2G team
Older group photo - Si2G team

Team Members

Maura Malińska  Principal Investigator

David A. Rincón  Postdoc

Gurusamy Sivakumar  Postdoc

Ewelina Zaorska  Research Staff

Natasza Jakubik  Student

Publications

Salt-dependent switching of crystal packing in cucurbituril–antidepressant crystals

Ion identity controls the packing of cucurbituril–antidepressant crystals, showing how salts can redirect supramolecular organization in the solid state.

CrystEngComm, 2026

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Water-Soluble Pd8L4 Barrel for Binding of Versatile Hydrophobic Dyes and Visible-Light Promoted Catalysis in Aqueous Medium

A water-soluble Pd₈L₄ barrel captures hydrophobic dyes and supports photocatalytic function in aqueous medium.

Angewandte Chemie, 2026

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Halogenated N-phenylpiperazine and 2-(piperazin-1-yl)pyrimidine as novel cucurbit[7]uril guests: experimental and computational insights into supramolecular binding

Molecular recognition in CB7 is shaped by small structural changes in the guest, which translate into measurable differences in binding thermodynamics and interaction patterns.

RSC Advances, 2025

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Protein Recognition and Assembly by a Phosphocavitand

A designed phosphocavitand recognizes protein surfaces and directs supramolecular assembly at the interface between host–guest chemistry and biomolecular recognition.

JACS, 2025

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Understanding the selectivity of nonsteroidal anti-inflammatory drugs for cyclooxygenases using quantum crystallography and electrostatic interaction energy

Quantum crystallography reveals how electrostatic interaction energies help rationalize molecular recognition and selectivity in biologically relevant drug–target systems.

IUCrJ, 2025

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Cucurbit[7]uril-mediated Histidine Dimerization: Exploring the Structure and Binding Mechanism

CB7 binding reorganizes histidine into a supramolecular dimer, linking protonation, host–guest recognition, and assembly in water.

Chemistry – A European Journal, 2024

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Meet us

11.08–19.08.2026

IUCr Congress

Calgary, Canada

24.06–26.06.2026

67th Polish Crystallographic Meeting

Wrocław, Poland

16.03.2026

Faculty Seminar – Zygmunt Derewenda

Wrocław, Poland

25.08–29.08.2025

European Crystallographic Meeting

Poznań, Poland

18.07–23.07.2025

75th American Crystallographic Association

Lombard, USA

25.06–27.06.2025

66th Polish Crystallographic Meeting

Warsaw, Poland

Contact SI2G

For collaborations, student projects, research visits, talks, or questions about our work, please contact us.

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Visit us

Pasteura 1, 02-093 Warszawa, Poland

Phone

+48 22 5526356