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Flavonoids as mushroom tyrosinase inhibitors: a fluorescence quenching study.
Flavonoids, a group of naturally occurring antioxidants and metal chelators, can be used as tyrosinase inhibitors due to their formation of copper-flavonoid complexes. Thus, to investigate theExpand
Identification, fermentation, and bioactivity against Xanthomonas oryzae of antimicrobial metabolites isolated from Phomopsis longicolla S1B4.
Bacterial blight, an important and potentially destructive bacterial disease in rice, is caused by Xanthomonas oryzae. Recently, this organism has developed resistance to available antibiotics,Expand
Genomic blueprint of Hahella chejuensis, a marine microbe producing an algicidal agent
Harmful algal blooms, caused by rapid growth and accumulation of certain microalgae in the ocean, pose considerable impacts on marine environments, aquatic industries and even public health. Here, weExpand
Agastinol and agastenol, novel lignans from Agastache rugosa and their evaluation in an apoptosis inhibition assay.
Investigation of the whole plant of Agastache rugosa resulted in the isolation of two new lignan compounds. Their structures were elucidated as (8S,7'R,8'S)-4-hydroxybenzoic acidExpand
The melanin synthesis inhibition and radical scavenging activities of compounds isolated from the aerial part of Lespedeza cyrtobotrya.
The EtOAc fraction of Lespedeza cyrtobotrya showed mushroom tyrosinase inhibitory and radical scavenging activity. Four active compounds were isolated based on LH-20 chromatography and HPLC, and theExpand
Regulation of protein function by native metastability.
In common globular proteins, the native form is in its most stable state. In contrast, each native form exists in a metastable state in inhibitory serpins (serine protease inhibitors) and some viralExpand
Accumulation of flavonols in response to ultraviolet-B irradiation in soybean is related to induction of flavanone 3-beta-hydroxylase and flavonol synthase.
There are several branch points in the flavonoid synthesis pathway starting from chalcone. Among them, the hydroxylation of flavanone is a key step leading to flavonol and anthocyanin. The flavanoneExpand
Two new constituents of Isodon excisus and their evaluation in an apoptosis inhibition assay.
Investigation of the whole plant of Isodon excisus resulted in the isolation of two new apoptosis inhibitors (1 and 2). Compounds 1 and 2 inhibited etoposide-induced apoptosis in U937 cells with IC50Expand
Effects of novel chalcone derivatives on α-glucosidase, dipeptidyl peptidase-4, and adipocyte differentiation in vitro.
Chana series are new chalcone derivatives. To evaluate the possibility of Chana series as therapeutic agents of type 2 diabetes, the inhibitory effects of Chana series on the activities ofExpand
Cavities of alpha(1)-antitrypsin that play structural and functional roles.
The native form of inhibitory serine protease inhibitors (serpins) is strained, which is critical for their inhibitory activity. Previous studies on stabilizing mutations of alpha(1)-antitrypsin, aExpand
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