K. Katayama

Structural and Dynamic Insights into the Biased Signaling Mechanism of the Human Kappa Opioid Receptor

This study investigates the structural dynamics of the human KOR-Gi signaling complex with G-protein-biased and balanced agonists, identifying key residues involved in signaling bias.

Production of Infectious Reporter Murine Norovirus by VP2 trans-Complementation

This study shows that infectious murine norovirus can be produced by supplying exogenous VP2 when ORF3 is replaced with foreign genes.

Neonatal Fc receptor is a functional receptor for human astrovirus

This study identifies the neonatal Fc receptor as a functional receptor for human astrovirus using CRISPR screening and shows its role in viral entry.

Structural basis for ion selectivity in potassium-selective channelrhodopsins

The paper determines the cryo-EM structures of two K+-selective channelrhodopsins, revealing a unique mechanism for K+ selectivity distinct from canonical K+ channels.

Comparison of personality structures between methodologies: personality ratings and behavioural observations in Japanese macaques (Macaca fuscata)

This study compares personality structures in Japanese macaques using personality ratings and behavioural observations, finding no overlapping traits and suggesting different aspects of behaviour are assessed by each method.

Energy transfer in ubiquitous rhodopsin pumps with xanthophyll antennas

The paper detects energy transfer from hydroxylated carotenoids to rhodopsin proton pumps in marine and freshwater bacteria.

Proton-transporting heliorhodopsins from marine giant viruses

This paper identifies a light-gated proton channel in a viral heliorhodopsin from Emiliania huxleyi virus 202, showing its potential role in host manipulation and optogenetic applications.

Nasal delivery of single-domain antibodies improve symptoms of SARS-CoV-2 infection in an animal model

This paper shows nasal delivery of a camelid single-domain antibody reduces SARS-CoV-2 titers in hamsters without weight loss or cytokine induction.

Light-induced difference FTIR spectroscopy of primate blue-sensitive visual pigment at 163 K

This paper uses light-induced difference FTIR spectroscopy to study structural changes in primate blue-sensitive visual pigment (MB) at 163 K, revealing insights into its photochromic properties and structural dynamics.

Unique retinal binding pocket of primate blue-sensitive visual pigment

The paper investigates the unique photochemistry of primate blue-sensitive visual pigment by showing that 9-cis retinal does not form in monkey blue pigment at low temperatures, suggesting structural constraints in its chromophore binding pocket.

Structural insights into the mechanism of rhodopsin phosphodiesterase

This study presents the structural and functional analysis of Rh-PDE from Salpingoeca rosetta, revealing its photoactivation mechanism and expanding the definition of rhodopsins.

Dynamic rotation of the protruding domain enhances the infectivity of norovirus

This study shows that the protruding domain of norovirus capsids dynamically rotates between rising and resting conformations in response to pH and metal ions, enhancing infection efficiency.