R. G. Sierra

4D Crystallography Captures Transient IF1-Ribosome Dynamics in Translation Initiation

This study uses 4D crystallography to capture transient dynamics of IF1 binding to the 30S ribosomal subunit, revealing allostery and interactions during translation initiation.

Ambient Temperature Bacterial Large Ribosomal Subunit Structure Enabled by Serial Femtosecond X-ray Crystallography

This study determines the structure of the 50S ribosomal subunit from Thermus thermophilus at ambient temperature using serial femtosecond X-ray crystallography, revealing new dynamics and antibiotic binding sites.

Changes in an Enzyme Ensemble During Catalysis Observed by High Resolution XFEL Crystallography

The paper uses XFEL crystallography to observe conformational changes in an enzyme during catalysis, revealing ionization-linked dynamics that control catalytic activity.

Detection of a geminate photoproduct of bovine cytochrome c oxidase by time-resolved serial femtosecond crystallography

The paper detects a geminate photoproduct of bovine cytochrome c oxidase using time-resolved serial femtosecond crystallography, revealing the ligand dissociation trajectory and protein dynamics.

Structural basis for functional properties of cytochrome c oxidase

This study reveals the structural differences between the oxidized O state and the metastable OH state of cytochrome c oxidase using spectroscopy and crystallography, showing how Y244's protonation state affects proton translocation.

Mapping Protein Dynamics at High-Resolution with Temperature-Jump X-ray Crystallography

This study uses temperature-jump X-ray crystallography to observe atomic-scale protein motions in lysozyme, showing how vibrations evolve into functional movements and how inhibitors alter these dynamics.

Inter-subunit coupling enables fast CO2-fixation by reductive carboxylases

This paper investigates the structural and dynamic mechanisms of CO2 fixation by ECRs, revealing inter-subunit coupling that enables fast catalytic activity.

Cooperative Allostery and Structural Dynamics of Streptavidin at Cryogenic- and Ambient-temperature

The paper presents two apo-streptavidin structures at different temperatures and reveals cooperative allostery through water-mediated interactions.

Structural insight into host plasma membrane association and assembly of HIV-1 Matrix protein

This study presents crystal structures of HIV-1 MA domain bound to IP6, revealing its binding mode and interaction with PIP2, providing insights into virion assembly.

Near-Physiological-Temperature Serial Femtosecond X-ray Crystallography Reveals Novel Conformations of SARS-CoV-2 Main Protease Active Site for Improved Drug Repurposing

The paper determines two apo structures of SARS-CoV-2 main protease at near-physiological temperature using SFX and uses molecular simulations to analyze inhibitor binding for drug repurposing.

Mix-and-inject XFEL crystallography reveals gated conformational dynamics during enzyme catalysis

This study uses mix-and-inject XFEL crystallography to observe conformational changes in isocyanide hydratase during catalysis, showing how cysteine modification affects enzyme dynamics and function.

Comparing serial X-ray crystallography and microcrystal electron diffraction (MicroED) as methods for routine structure determination from small macromolecular crystals

This study compares serial X-ray crystallography and MicroED for determining structures from small macromolecular crystals, highlighting their strengths and challenges.

Serial femtosecond X-ray diffraction of HIV-1 Gag MA-IP6 microcrystals at ambient temperature

This study uses serial femtosecond X-ray crystallography to analyze HIV-1 Gag MA-IP6 microcrystals at ambient temperature, achieving high-resolution diffraction data.

Aminoglycoside ribosome interactions reveal novel conformational states at ambient temperature

This study examines aminoglycoside interactions with the bacterial 30S ribosome at ambient and cryogenic temperatures, revealing temperature-sensitive conformational changes and new structural states.

Structure of the 30S ribosomal decoding complex at ambient temperature

The paper reports an ambient-temperature X-ray crystal structure of the Thermus thermophilus 30S ribosomal decoding complex, showing consistency with cryogenic structures but with minor conformational variations.