全文获取类型
收费全文 | 458篇 |
免费 | 27篇 |
出版年
2023年 | 2篇 |
2022年 | 3篇 |
2021年 | 10篇 |
2020年 | 5篇 |
2019年 | 1篇 |
2018年 | 5篇 |
2017年 | 4篇 |
2016年 | 16篇 |
2015年 | 16篇 |
2014年 | 24篇 |
2013年 | 38篇 |
2012年 | 27篇 |
2011年 | 33篇 |
2010年 | 18篇 |
2009年 | 24篇 |
2008年 | 28篇 |
2007年 | 29篇 |
2006年 | 36篇 |
2005年 | 30篇 |
2004年 | 32篇 |
2003年 | 25篇 |
2002年 | 25篇 |
2001年 | 2篇 |
2000年 | 6篇 |
1999年 | 4篇 |
1998年 | 3篇 |
1997年 | 4篇 |
1996年 | 4篇 |
1995年 | 2篇 |
1994年 | 2篇 |
1993年 | 2篇 |
1992年 | 4篇 |
1991年 | 4篇 |
1990年 | 2篇 |
1989年 | 1篇 |
1988年 | 2篇 |
1987年 | 2篇 |
1984年 | 1篇 |
1982年 | 1篇 |
1981年 | 3篇 |
1980年 | 1篇 |
1978年 | 1篇 |
1977年 | 1篇 |
1976年 | 1篇 |
1972年 | 1篇 |
排序方式: 共有485条查询结果,搜索用时 328 毫秒
471.
Hiroo Tanaka Yasuko Yamamoto Hiroka Kashihara Yuji Yamazaki Kazutoshi Tani Yoshinori Fujiyoshi Katsuhiko Mineta Kosei Takeuchi Atsushi Tamura Sachiko Tsukita 《Molecular and cellular biology》2016,36(6):954-964
Claudin protein family members, of which there are at least 27 in humans and mice, polymerize to form tight junctions (TJs) between epithelial cells, in a tissue- and developmental stage-specific manner. Claudins have a paracellular barrier function. In addition, certain claudins function as paracellular channels for small ions and/or solutes by forming selective pores at the TJs, although the specific claudins involved and their functional mechanisms are still in question. Here we show for the first time that claudin-21, which is more highly expressed in the embryonic than the postnatal stages, acts as a paracellular channel for small cations, such as Na+, similar to the typical channel-type claudins claudin-2 and -15. Claudin-21 also allows the paracellular passage of larger solutes. Our findings suggest that claudin-21-based TJs allow the passage of small and larger solutes by both paracellular channel-based and some additional mechanisms. 相似文献
472.
473.
Teruhiko Matsubara Kazutoshi Iijima Takayoshi Watanabe Takahiro Hohsaka Toshinori Sato 《Bioorganic & medicinal chemistry letters》2013,23(20):5634-5636
O-GalNAcα-modified proteins are the precursor of mucin-type O-glycosylated proteins. Homogeneously O-glycosylated proteins are required to investigate the biological functions of glycoproteins and to develop biopharmaceuticals. Here we show that the incorporation of GalNAcα-Thr into proteins successfully proceeded by the use of a chemically aminoacylated tRNA. GalNAcα-Thr was chemoenzymatically attached to amber suppressor tRNA and the product was subjected to in vitro translation together with streptavidin mRNA containing the UAG codon. Gel electrophoresis and mass analysis showed that GalNAcα-Thr was successfully incorporated into the N-terminus, although it was not incorporated at the interior. This method will facilitate the preparation of homogeneous GalNAcα-proteins. 相似文献
474.
475.
3-Isoxazolidone has been isolated from jack bean seedlings. 相似文献
476.
Kazutoshi Nakasono 《Journal of nematology》2004,36(3):356-420
The geographical distribution and polymorphism in morphological and biological characters of the reniform nematode, Rotylenchulus reniformis, in Japan were studied. The northern limit of habitat of this nematode was found on the 14 °C isothermal line of annual average-air temperature. Three morphologically different groups were ascertained which corresponded to three biological types based on male frequency. Incidence of males was consistent within populations and was not affected by environmental factors. Sexual attraction of males by females indicated reproductive isolation between the male-numerous type (MNT) and male-rare type (MRT) or male-absent type (MAT). Reproduction was amphimictic in the MNT and parthenogenetic in the MRT and MAT. Larval development in both MRT and MAT, but not that of MNT popula-tions, was inhibited at 34 °C. Differences in host preference were also observed among populations. 相似文献
477.
478.
Motoki Endo Yosuke Inoue Keisuke Kuwahara Chihiro Nishiura Ai Hori Takayuki Ogasawara Miwa Yamaguchi Tohru Nakagawa Toru Honda Shuichiro Yamamoto Hiroko Okazaki Teppei Imai Akiko Nishihara Toshiaki Miyamoto Naoko Sasaki Akihiko Uehara Makoto Yamamoto Taizo Murakami Makiko Shimizu Masafumi Eguchi Takeshi Kochi Satsue Nagahama Kentaro Tomita Naoki Kunugita Takeshi Tanigawa Maki Konishi Akiko Nanri Isamu Kabe Tetsuya Mizoue Seitaro Dohi 《Obesity (Silver Spring, Md.)》2020,28(2):437-444
479.
Toshihiko Kakiuchi Muneaki Matsuo Hiroyoshi Endo Yasuhisa Sakata Motohiro Esaki Takahiro Noda Ichiro Imamura Kazutoshi Hashiguchi Shinichi Ogata Yasuhiko Fujioka Keiichiro Hanada Kayoko Fukuda Masaya Yoshimura Tetsuro Kajiwara Kentaroh Yamamoto Daisuke Yamaguchi Hiroharu Kawakubo Taro Akashi Michihiro Sumino Keiji Matsunaga Eriko Muro Atsuo Kuwahara Kazuto Taniguchi Koji Fukuyama Akira Watanabe Ayako Takamori Masumi Okuda Kohei Yamanouchi Kazuma Fujimoto 《Helicobacter》2021,26(2):e12776
480.
Rui Huang Kazutoshi Yamamoto Meng Zhang Nataliya Popovych Ivan Hung Sang-Choul Im Zhehong Gan Lucy Waskell Ayyalusamy Ramamoorthy 《Biophysical journal》2014,106(10):2126-2133
NADPH-cytochrome P450 oxidoreductase (CYPOR) is an essential redox partner of the cytochrome P450 (cyt P450) superfamily of metabolic enzymes. In the endoplasmic reticulum of liver cells, such enzymes metabolize ∼75% of the pharmaceuticals in use today. It is known that the transmembrane domain of CYPOR plays a crucial role in aiding the formation of a complex between CYPOR and cyt P450. Here we present the transmembrane structure, topology, and dynamics of the FMN binding domain of CYPOR in a native membrane-like environment. Our solid-state NMR results reveal that the N-terminal transmembrane domain of CYPOR adopts an α-helical conformation in the lipid membrane environment. Most notably, we also show that the transmembrane helix is tilted ∼13° from the lipid bilayer normal, and exhibits motions on a submillisecond timescale including rotational diffusion of the whole helix and fluctuation of the helical director axis. The approaches and the information reported in this study would enable further investigations on the structure and dynamics of the full-length NADPH-cytochrome P450 oxidoreductase and its interaction with other membrane proteins in a membrane environment. 相似文献