S. Kojima

Structural insight into sodium ion pathway in the bacterial flagellar stator from marine Vibrio

The paper determines the structure of the Na+-driven stator PomAB from Vibrio using cryo-EM and reveals the sodium ion pathway, ion selectivity mechanism, and inhibition by phenamil.

Structural analysis of S-ring composed of FliFG fusion proteins in marine Vibrio polar flagellar motors

The paper reports the near-atomic structure of the S-ring from Vibrio alginolyticus flagellar motor using cryo-EM, revealing structural differences compared to Salmonella.

General remarks of the secondary promoter element regulating the genome replication of paramyxo- and filoviruses

The paper identifies distinct PE2 subcategories in paramyxoviruses and shows that four U-containing hexamer repeats are critical for filovirus genome replication.

Roles of linker region flanked by transmembrane and peptidoglycan binding region of PomB in energy conversion of the Vibrio flagellar motor

This study investigates the role of the flexible linker and plug region of PomB in the activation of the sodium-driven flagellar motor stator complex in Vibrio, showing that these regions are important for regulation but not essential for motor function.

Deciphering the Genomes of Motility-Deficient Mutants of Vibrio alginolyticus 138-2

This study identifies mutations in flagella-related genes in motility-deficient Vibrio alginolyticus mutants through genomic analysis.

The song does not remain the same: daily singing of adult songbirds prevents passive changes in song structure independently of auditory feedback

This study shows that daily singing in adult zebra finches prevents passive changes in song structure, independent of auditory feedback, and recovery occurs with resumed singing.

Ring formation by Vibrio fusion protein composed of FliF and FliG, MS-ring and C-ring component of bacterial flagellar motor in membrane

This study constructs a FliF-FliG fusion protein that enables MS-ring formation in E. coli, revealing its role in flagellar motor assembly and force generation.

Interaction of FlhF, SRP-like GTPase with FliF, MS ring component assembling the initial structure of flagella in marine Vibrio

This paper demonstrates that FlhF interacts with the N-terminal region of FliF, including the first transmembrane segment and periplasmic region, to facilitate MS-ring formation in Vibrio alginolyticus flagella.

Function and structure of FlaK, a master regulator of the polar flagellar genes in marine Vibrio

This study investigates FlaK's role in regulating flagellar gene expression in Vibrio alginolyticus through mutational analysis and biochemical assays, revealing its ATPase activity and interactions with FlhG.

A comprehensive list of the replication promoters of Bunyavirales reveals a unique promoter structure in Nairoviridae differing from other virus families

The paper identifies a unique GC-rich promoter structure in Nairoviridae, distinguishing it from other Bunyavirales families, and provides a comprehensive list of replication promoters.

Formation of multiple flagella caused by a mutation of the flagellar rotor protein FliM in Vibrio alginolyticus

This study identifies an E9K mutation in FliM that causes multiple flagella in Vibrio alginolyticus by inhibiting FlhG ATPase activity, revealing a novel regulatory mechanism for flagellar number control.

Functional analysis of the N-terminal region of Vibrio FlhG, a MinD-type ATPase in flagellar number control

The paper investigates the role of the N-terminal region of Vibrio FlhG in flagellar number control by analyzing its effect on FlhF activity and protein levels.

Frequency of a nucleotide overhang at the 5' end of hemorrhagic fever mammarenavirus genomes in public sequence data

The paper examines the frequency of a 5' guanine overhang in mammarenavirus genomes and links it to their pathogenicity.

Hoop-like role of the cytosolic interface helix in Vibrio PomA, an ion-conducting membrane protein, in the bacterial flagellar motor

This study investigates the function of the cytosolic interface helix in Vibrio PomA, showing its role in stator complex stability and ion conduction.

Crosstalk between Flavonoids and the Plant Circadian Clock

This study shows flavonoids influence circadian clock genes in Arabidopsis through RNA-Seq and promoter-luciferase analysis, with quercetin affecting CCA1 promoter activity.

ZomB is essential for chemotaxis of Vibrio alginolyticus by the rotational direction control of the polar flagellar motor

This study shows ZomB is essential for clockwise rotation of the flagellar motor in Vibrio alginolyticus, working with CheY to control rotational direction.

Hidden viral sequences in public sequencing data and warning for future emerging diseases

The paper identifies 900 hidden viral infections and six nearly complete viral genomes in public sequencing data, highlighting potential public health risks from zoonotic viruses.

Function of the Vibrio PomB plug region based on the stator rotation model for bacterial flagellar motor

The paper investigates the function of the Vibrio PomB plug region by showing it interacts with PomA and terminates ion flow, supporting the stator rotation model.

Site-directed crosslinking identifies the stator-rotor interaction surfaces in a hybrid bacterial flagellar motor

This study uses site-directed crosslinking to directly demonstrate physical interactions between specific residues in FliG and PomA/MotA in bacterial flagellar motors.

Role of the N- and C-terminal regions of FliF, the MS ring component in Vibrio flagellar basal body

This study investigates the roles of N- and C-terminal regions of FliF in Vibrio flagellar MS ring formation and function, finding that the N-terminus aids in ring formation via FlhF interaction while the C-terminus is essential for motor function.

One hundred million years history of bornavirus infections hidden in vertebrate genomes

This study identifies endogenous bornavirus-like elements in vertebrate genomes to trace a 100 million year history of bornavirus infections, revealing lineage changes and host coexistence.

Identification of novel avian and mammalian deltaviruses provides new insights into deltavirus evolution

This study identifies novel deltaviruses in birds and mammals, revealing evolutionary relationships and transmission dynamics of deltaviruses.

The flagellar motor of Vibrio alginolyticus undergoes major structural remodeling during rotational switching

This study uses cryo-electron tomography to show that the C-ring of Vibrio alginolyticus undergoes structural remodeling during rotational switching.

Outer membrane-deprived cyanobacteria liberate periplasmic and thylakoid luminal components that support the growth of heterotrophs

This paper shows that removing the outer membrane from cyanobacteria allows them to release photosynthetic products that support heterotroph growth, mimicking chloroplast function.

Dynamic production and loss of flagellar filaments during the bacterial life cycle

This study shows that bacterial flagella are not permanent structures, dynamically produced and lost during growth phases, with glucose availability influencing their disassembly.

The Vibrio H-ring facilitates the outer membrane penetration of polar-sheathed flagellum

This study identifies the H-ring as a novel structure facilitating outer membrane penetration and flagellar assembly in Vibrio alginolyticus using cryo-electron tomography.