P. Sarma

A genetically-encoded nanobody sensor reveals conformational diversity in beta-arrestins orchestrated by distinct seven transmembrane receptors

This study introduces a nanobody sensor to detect conformational changes in beta-arrestins upon GPCR activation, revealing receptor-specific conformational diversity.

Molecular insights into atypical modes of beta-arrestin interaction with seven transmembrane receptors

This study presents cryo-EM structures and experimental data revealing how beta-arrestins interact with GPCRs, particularly those with phosphorylation in the third intracellular loop and intrinsically biased receptors.

Structure-guided engineering of biased-agonism in the human niacin receptor via single amino acid substitution

This study presents cryo-EM structures of GPR109A-G-protein complexes with agonists and uses them to engineer biased agonists with reduced flushing effects.

Structural insights into agonist-binding and activation of the human complement C3a receptor

This study presents structural insights into C3a-C3aR interactions and identifies a G-protein-biased agonist for the receptor.

Structural insights into ligand-recognition, activation, and signaling-bias at the complement C5a receptor, C5aR1

This study presents cryo-EM structures of C5aR1 bound to C5a and a synthetic peptide, revealing conformational changes and G-protein coupling mechanisms.

A key GPCR phosphorylation motif discovered in arrestin2-CCR5 phosphopeptide complexes

The paper identifies a phosphorylation motif in arrestin2-CCR5 complexes that is essential for stable interactions and functional activation of CCR5.

Structural snapshots uncover a lock-and-key type conserved activation mechanism of β-arrestins by GPCRs

The paper presents structural snapshots of β-arrestins interacting with GPCRs, revealing a conserved 'lock-and-key' activation mechanism through specific phosphorylation patterns.

Molecular insights into intrinsic transducer-coupling bias in the CXCR4-CXCR7 system

This study characterizes the biased agonism of CXCR4 and CXCR7, revealing differences in G-protein coupling, β-arrestin recruitment, and ERK1/2 activation.

Preclinical Efficacy of IMM-BCP-01, a Highly Active Patient-Derived Anti-SARS-CoV-2 Antibody Cocktail

The paper identifies and characterizes an antibody cocktail, IMM-BCP-01, that neutralizes SARS-CoV-2 variants in vitro and inhibits infection in vivo through Spike Trimer dissociation and effector responses.