Huahong Xin

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The tea plant [Camellia sinensis (L.) O. Kuntze] is an important commercial crop rich in bioactive ingredients, especially catechins, caffeine, theanine and other free amino acids, which the quality of tea leaves depends on. Drought is the most important environmental stress affecting the yield and quality of this plant. In this study, the effects of(More)
Dehydration-responsive element-binding protein (DREB) transcription factors play key roles in plant stress signal transduction pathways. We herein describe the functions of a Camellia sinensis DREB transcription factor (CsDREB) in response to abiotic stress. Subcellular localization analyses indicated that the CsDREB localizes to the nucleus. CsDREB(More)
We have generated a set of alanine-scanning substitutions in high-mobility-group protein 1 box B (HMG1-B; the second domain of the HMG1 nuclear protein from the rat) in order to explore the influence of specific surface side chains on its function and folding. Guanidine hydrochloride and thermal unfolding studies have been carried out to investigate the(More)
CsHSP17.7, CsHSP18.1, and CsHSP21.8 expressions are induced by heat and cold stresses, and CsHSP overexpression confers tolerance to heat and cold stresses in transgenic Pichia pastoris and Arabidopsis thaliana. Small heat shock proteins (sHSPs) are crucial for protecting plants against biotic and abiotic stresses, especially heat stress. However, knowledge(More)
Many proteins consist of subdomains that can fold and function independently. We investigate here the interaction between the two high mobility group (HMG) box subdomains of the nuclear protein rHMG1. An HMG box is a conserved amino acid sequence of approximately 80 amino acids rich in basic, aromatic and proline side chains that is active in binding DNA in(More)
The HMG1/2 family is a large group of proteins that share a conserved sequence of approximately 80 amino acids rich in basic, aromatic and proline side chains, referred to as an HMG box. Previous studies show that HMG boxes can bind to DNA in a structure-specific manner. To define the basis for DNA recognition by HMG boxes, we characterize the interaction(More)
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