Publications de Rajasekhar Kolla

A Versatile Method for Site-Specific Chemical Installation of Aromatic Posttranslational Modification Analogs into Proteins

Hilal Lashuel, Shaswati Mandal, Rajasekhar Kolla

Posttranslational modifications (PTMs) of proteins play central roles in regulating the protein structure, interactome, and functions. A notable modification site is the aromatic side chain of Tyr, which undergoes modifications such as phosphorylation and ...

2024

Deep learning augmented nanoplasmonic infrared sensor for structural protein biomarker-based detection of neurodegenerative diseases

Hilal Lashuel, Hatice Altug, Deepthy Kavungal, Rajasekhar Kolla, Pedro José Santana Ribeiro Magalhães

We introduce an infrared metasurface sensor based on plasmonic surface-enhanced infrared absorption spectroscopy combined with immunoassay, which detects alpha-synuclein, an early structural biomarker protein for neurodegenerative diseases with clinical sp ...

SPIE2024

Author Correction: Fully co-factor-free ClearTau platform produces seeding-competent Tau fibrils for reconstructing pathological Tau aggregates

Henning Paul-Julius Stahlberg, Hilal Lashuel, Sergey Nazarov, Meltem Tatli, Galina Limorenko, Rajasekhar Kolla

Nature Research2024

Fully co-factor-free ClearTau platform produces seeding-competent Tau fibrils for reconstructing pathological Tau aggregates

Henning Paul-Julius Stahlberg, Hilal Lashuel, Meltem Tatli, Galina Limorenko, Rajasekhar Kolla

The authors report a method for producing co-factor-free fibrils from all full-length Tau isoforms. The method paves the way for reconstituting pathology resembling Tau fibrils and enables screening of Tau aggregation-modifying compounds for targeted thera ...

Nature Research2023

Artificial intelligence-coupled plasmonic infrared sensor for detection of structural protein biomarkers in neurodegenerative diseases

Hilal Lashuel, Hatice Altug, Deepthy Kavungal, Rajasekhar Kolla, Pedro José Santana Ribeiro Magalhães

Diagnosis of neurodegenerative disorders (NDDs) including Parkinson's disease and Alzheimer's disease is challenging owing to the lack of tools to detect preclinical biomarkers. The misfolding of proteins into oligomeric and fibrillar aggregates plays an i ...

AMER ASSOC ADVANCEMENT SCIENCE2023

The role of PTM crosstalks in Httex1 structure, aggregation and membrane interaction

Hilal Lashuel, Matteo Dal Peraro, Luciano Andres Abriata, Lucien Fabrice Krapp, Charlotte Julie Caroline Gehin, Anass Chiki, Driss Boudeffa, Rajasekhar Kolla, Zhidian Zhang

CELL PRESS2022

Investigating Crosstalk Among PTMs Provides Novel Insight Into the Structural Basis Underlying the Differential Effects of Nt17 PTMs on Mutant Httex1 Aggregation

Hilal Lashuel, Matteo Dal Peraro, Luciano Andres Abriata, Lucien Fabrice Krapp, Anass Chiki, Driss Boudeffa, Iman Rostami, Rajasekhar Kolla, Zhidian Zhang

Post-translational modifications (PTMs) within the first 17 amino acids (Nt17) of the Huntingtin protein (Htt) have been shown to inhibit the aggregation and attenuate the toxicity of mutant Htt proteins in vitro and in various models of Huntington’s disea ...

2021

A New Chemoenzymatic Semisynthetic Approach Provides Insight into the Role of Phosphorylation beyond Exon1 of Huntingtin and Reveals N-Terminal Fragment Length-Dependent Distinct Mechanisms of Aggregation

Hilal Lashuel, Jonathan Jean-Pierre Ricci, Andreas Reif, Rajasekhar Kolla, Iman Rostami, Gopinath Pushparathinam

Huntington’s disease is a neurodegenerative dis- order caused by the expansion of a polyglutamine repeat (>36Q) in the N-terminal domain of the huntingtin protein (Htt), which renders the protein or fragments thereof more prone to aggregate and form inclus ...

2021

Site-Specific Hyperphosphorylation Inhibits, Rather than Promotes, Tau Fibrillization, Seeding Capacity, and Its Microtubule Binding

Hilal Lashuel, Mahmood Haj Yahya, Rajasekhar Kolla, Gopinath Pushparathinam

The consistent observation of phosphorylated tau in the pathology of Alzheimer's disease has contributed to the emergence of a model where hyperphosphorylation triggers both tau disassociation from microtubules and its subsequent aggregation. Herein, we ap ...

Wiley-VCH Verlag GmbH2020