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Aminoglycoside antibiotics induce bacterial biofilm formation
TLDR
It is shown that subinhibitory concentrations of aminoglycoside antibiotics induce biofilm formation in P. aeruginosa and Escherichia coli, and the molecular basis of this response includes alterations in the level of c-di-GMP.
Human telomeric sequence forms a hybrid-type intramolecular G-quadruplex structure with mixed parallel/antiparallel strands in potassium solution
TLDR
The folding structure of the human telomeric sequence in K+ solution determined by NMR demonstrates a novel, unprecedented intramolecular G-quadruplex folding topology with hybrid-type mixed parallel/antiparallel G-strands, and suggests a straightforward pathway for the secondary structure formation with effective packing within the extended human telomersic DNA.
NMR solution structure of the major G-quadruplex structure formed in the human BCL2 promoter region
TLDR
The distinct major BCL2 promoter G-quadruplex structure suggests that it can be specifically involved in gene modulation and can be an attractive target for pathway-specific drug design.
Structural basis of HIV-1 resistance to AZT by excision
Human immunodeficiency virus (HIV-1) develops resistance to 3′-azido-2′,3′-deoxythymidine (AZT, zidovudine) by acquiring mutations in reverse transcriptase that enhance the ATP-mediated excision of
Structure of the Hybrid-2 type intramolecular human telomeric G-quadruplex in K+ solution: insights into structure polymorphism of the human telomeric sequence
TLDR
The first structure of the major intramolecular G-quadruplex formed in a native, non-modified human telomeric sequence in K+ solution is reported, a hybrid-type mixed parallel/antiparallel-G-stranded G- quadruplex, one end of which is covered by a novel T:A:T triple capping structure.
A glutamate‐alanine‐leucine (EAL) domain protein of Salmonella controls bacterial survival in mice, antioxidant defence and killing of macrophages: role of cyclic diGMP
TLDR
Besides its known role in regulating cellulose synthesis and biofilm formation, bacterial c‐diGMP also regulates host–pathogen interactions involving antioxidant defence and cytotoxicity.
Structural Basis for the Role of the K65R Mutation in HIV-1 Reverse Transcriptase Polymerization, Excision Antagonism, and Tenofovir Resistance*
TLDR
The guanidinium planes of the arginines K65R and Arg72 were stacked to form a molecular platform that restricts the conformational adaptability of both of the residues, which explains the negative effects of the K 65R mutation on nucleotide incorporation and on excision.
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