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Novel HMW glutenin genes from Aegilops tauschii and their unique structures
Wen-Jie Chen,Zhong-Wei Yuan,Lian-Quan Zhang,Xing Fan,Ze-Hong Yan,Ji-Rui Wang,You-Liang Zheng,Huai-Gang Zhang,Deng-Cai Liu 한국유전학회 2012 Genes & Genomics Vol.34 No.3
A pair of novel high-molecular-weight glutenin subunits (HMW-GS) 1Dx5.3t and 1Dy12.1**t were revealed and characterized from Ae. tauschii accession PI554324. SDS-PAGE band of 1Dx5.3t was between those of 1Bx6 and 1Bx7, while 1Dy12.1**t with slightly faster migration rate than that of 1Dy12. The lengths of 1Dx5.3t and 1Dy12.1**t were 2115 bp and 1986 bp, encoding 703 and 660 amino acid residues,respectively. Their authenticity was confirmed by successful expression of the coding regions in Escherichia coli. 1Dx5.3t is the shortest of the known Dx-type alleles. 1Dy12.1**t is also a special subunit since it has an additional cysteine in the front of the central repetitive domain. This cysteine that is not existed in previously reported Dy-type genes may be useful for improving bread wheat quality. Median-joining Network analysis indicated that 1Dy12.1**t may be a key site in the genealogy of the Glu-Dy.
Xin Chen,Zhiqiang Zhang,Aiqun Li,Hu, Liang,Liu, Xianming,Fan, Zhong,Sun, Peng 한국풍공학회 2021 Wind and Structures, An International Journal (WAS Vol.32 No.2
The 246.8-m-tall Beijing Olympic Tower (BOT) is a new landmark in Beijing City, China. Its unique architectural style with five sub-towers and a large tower crown gives rise to complex dynamic characteristics. Thus, it is wind-sensitive, and a double-stage pendulum tuned mass damper (DPTMD) has been installed for vibration mitigation. In this study, a finite-element analysis of the wind-induced responses of the tower based on full-scale measurement results was performed. First, the structure of the BOT and the full-scale measurement are introduced. According to the measured dynamic characteristics of the BOT, such as the natural frequencies, modal shapes, and damping ratios, an accurate finite-element model (FEM) was established and updated. On the basis of wind measurements, as well as wind-tunnel test results, the wind load on the model was calculated. Then, the wind-induced responses of the BOT with the DPTMD were obtained and compared with the measured responses to assess the numerical wind-induced response analysis method. Finally, the wind-induced serviceability of the BOT was evaluated according to the field measurement results for the wind-induced response and was found to be satisfactory for human comfort.
Lei, Chu-Zhao,Zhang, Wei,Chen, Hong,Lu, Fan,Ge, Qing-Lan,Liu, Ruo-Yu,Dang, Rui-Hua,Yao, Yun-Yi,Yao, Li-Bo,Lu, Zi-Fan,Zhao, Zhong-liang Asian Australasian Association of Animal Productio 2007 Animal Bioscience Vol.20 No.4
Little is known about the origin and genetic diversity of swamp buffaloes in China. To obtain more knowledge on genetics of the water buffalo in China, the complete mitochondrial D-loop sequences of 30 samples from 6 native types were investigated. The results revealed 12 mitochondrial haplotypes with 50 polymorphic sites. Among these polymorphic sites, there were 49 transitions and 1 transversion. The average nucleotide diversity and haplotype diversity estimated from mtDNA D-loop region in 6 Chinese water buffalo types were 0.00684 and 0.798, respectively, showing rather abundant mitochondrial genetic diversity. The Neighbor-Joining (NJ) tree of mtDNA of Chinese water buffaloes was constructed according to the 12 haplotypes. The NJ tree indicated two lineages being designated lineage A and lineage B, in which lineage A was predominant, and lineage B was at low frequency. The new lineage B was first discovered and defined in 6 Chinese water buffalo types. These results showed that two different maternal lineages were involved in the origin of domestic swamp buffaloes in China and the lineage B was probably an introgression from Southeast Asian buffaloes.
Central role of autophagic UVRAG in melanogenesis and the suntan response
Yang, Yongfei,Jang, Gyu-beom,Yang, Xuanjun,Wang, Qiaoxiu,He, Shanshan,Li, Shun,Quach, Christine,Zhao, Shihui,Li, Fan,Yuan, Zengqiang,Lee, Hye-Ra,Zhong, Hanbing,Liang, Chengyu National Academy of Sciences 2018 PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF Vol.115 No.33
<P>UV-induced cell pigmentation represents an important mechanism against skin cancers. Sun-exposed skin secretes alpha-MSH, which induces the lineage-specific transcriptional factor MITF and activates melanogenesis in melanocytes. Here, we show that the autophagic tumor suppressor UVRAG plays an integral role in melanogenesis by interaction with the biogenesis of lysosome-related organelles complex 1 (BLOC-1). This interaction is required for BLOC-1 stability and for BLOC-1-mediated cargo sorting and delivery to melanosomes. Absence of UVRAG dispersed BLOC-1 distribution and activity, resulting in impaired melanogenesis in vitro and defective melanocyte development in zebrafish in vivo. Furthermore, our results establish UVRAG as an important effector for melanocytes' response to alpha-MSH signaling as a direct target of MITF and reveal the molecular basis underlying the association between oncogenic BRAF and compromised UV protection in melanoma.</P>