Hyun Koo

Crystallization and preliminary X-ray crystallographic analysis of malonamidase E2, an amidase signature family member.

Refolding of the catalytic and hinge domains of human MT1-mMP expressed in Escherichia coli and its characterization.

Effects of compounds found in propolis on Streptococcus mutans growth and on glucosyltransferase activity.

High molecular weight water-soluble chitosan protects against apoptosis induced by serum starvation in human astrocytes.

Structure of malonamidase E2 reveals a novel Ser-cisSer-Lys catalytic triad in a new serine hydrolase fold that is prevalent in nature.

[Biliary papillomatosis].

Effect of a novel type of propolis and its chemical fractions on glucosyltransferases and on growth and adherence of mutans streptococci.

Characterization of a novel Ser-cisSer-Lys catalytic triad in comparison with the classical Ser-His-Asp triad.

A case of ACTH-producing pheochromocytoma associated with pregnancy.

Effects of behavior modification on body image, depression and body fat in obese Korean elementary school children.

The influence of mutanase and dextranase on the production and structure of glucans synthesized by streptococcal glucosyltransferases.

Estimated exposure to phthalates in cosmetics and risk assessment.

Genotoxicity evaluation of Isaria sinclairii (ISE) extract.

The putative autolysin regulator LytR in Streptococcus mutans plays a role in cell division and is growth-phase regulated.

In vitro and in vivo effects of isolated fractions of Brazilian propolis on caries development.

Human monitoring of phthalates and risk assessment.

The influence of a novel propolis on mutans streptococci biofilms and caries development in rats.

Metabolic profiling and phylogenetic analysis of medicinal Zingiber species: Tools for authentication of ginger (Zingiber officinale Rosc).

Predictors of suicidal ideation for adolescents by gender.

Influence of apigenin on gtf gene expression in Streptococcus mutans UA159.

Co-operative inhibition by fluoride and zinc of glucosyl transferase production and polysaccharide synthesis by mutans streptococci in suspension cultures and biofilms.

[Satisfaction with life and it's predictors of Korean adolescents].

Inhibitory effects of cranberry polyphenols on formation and acidogenicity of Streptococcus mutans biofilms.

Predictors of suicidal ideation among high school students by gender in South Korea.

A giant colonic hamartoma and multiple colonic hamartomatous polyps in a middle-aged man.

Role of unsaturated fatty acid biosynthesis in virulence of Streptococcus mutans.

Toxicokinetic relationship between di(2-ethylhexyl) phthalate (DEHP) and mono(2-ethylhexyl) phthalate in rats.

Extraction and purification of total RNA from Streptococcus mutans biofilms.

Hershberger assay for antiandrogenic effects of phthalates.

[The study on predictors of depression for Korean female adolescents].

Chemical characterization of red wine grape (Vitis vinifera and Vitis interspecific hybrids) and pomace phenolic extracts and their biological activity against Streptococcus mutans.

[Relationships among cybersex addiction, gender egalitarianism, sexual attitude and the allowance of sexual violence in adolescents].

Inhibitory effects of 7-epiclusianone on glucan synthesis, acidogenicity and biofilm formation by Streptococcus mutans.

Molecular mass sorting of proteome using hollow fiber flow field-flow fractionation for proteomics.

Adsorption of salivary and serum proteins, and bacterial adherence on titanium and zirconia ceramic surfaces.

Isolation and purification of total RNA from Streptococcus mutans in suspension cultures and biofilms.

Molecular characterization of ORFs 2 to 7 of Korean porcine reproductive and respiratory syndrome virus (CA) and its protein expression by recombinant baculoviruses.

Role of Clp proteins in expression of virulence properties of Streptococcus mutans.

The utility of a multibending endoscope for selective cannulation during ERCP in patients with a Billroth II gastrectomy (with video).

Overtube-balloon-assisted direct peroral cholangioscopy by using an ultra-slim upper endoscope (with videos).

Adjunctive chemotherapeutic suppression of mutans streptococci in the setting of severe early childhood caries: an exploratory study.

Effect of biliary stenting combined with ursodeoxycholic acid and terpene treatment on retained common bile duct stones in elderly patients: a multicenter study.

Combined endoscopic stent-in-stent placement for malignant biliary and duodenal obstruction by using a new duodenal metal stent (with videos).

Direct peroral cholangioscopy using an ultra-slim upper endoscope for the treatment of retained bile duct stones.

Control of spin precession in a spin-injected field effect transistor.

Influences of naturally occurring agents in combination with fluoride on gene expression and structural organization of Streptococcus mutans in biofilms.

[Development of a cell phone addiction scale for korean adolescents].

Identification of gene targets eliciting improved alcohol tolerance in Saccharomyces cerevisiae through inverse metabolic engineering.

Renal hilar control during laparoscopic partial nephrectomy: to clamp or not to clamp.

Endoscopic removal of an enterolith causing afferent loop syndrome using electrohydraulic lithotripsy.

Effects of 7-epiclusianone on Streptococcus mutans and caries development in rats.

Extracellular polysaccharides matrix--an often forgotten virulence factor in oral biofilm research.

Protocols to study the physiology of oral biofilms.

Human common salivary protein 1 (CSP-1) promotes binding of Streptococcus mutans to experimental salivary pellicle and glucans formed on hydroxyapatite surface.

Inhibition of Streptococcus mutans biofilm accumulation and development of dental caries in vivo by 7-epiclusianone and fluoride.

Dynamics of Streptococcus mutans transcriptome in response to starch and sucrose during biofilm development.

Effect of transdermal fentanyl patches on the motility of the sphincter of oddi.

Improved galactose fermentation of Saccharomyces cerevisiae through inverse metabolic engineering.

Elevated incidence of dental caries in a mouse model of cystic fibrosis.

Expression of aldehyde dehydrogenase 6 reduces inhibitory effect of furan derivatives on cell growth and ethanol production in Saccharomyces cerevisiae.

Influences of trans-trans farnesol, a membrane-targeting sesquiterpenoid, on Streptococcus mutans physiology and survival within mixed-species oral biofilms.

A case of crystalline keratopathy in monoclonal gammopathy of undetermined significance (MGUS).

Characterization of Beauveria bassiana MsW1 isolated from pine sawyers, Monochamus saltuarius.

Production of classical Swine Fever virus envelope glycoprotein e2 as recombinant polyhedra in baculovirus-infected silkworm larvae.

Tobacco mitochondrial small heat shock protein NtHSP24.6 adopts a dimeric configuration and has a broad range of substrates.

A case of intrapancreatic accessory spleen mistaken as a pancreatic mass due to different enhancing pattern from normal spleen.