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321.
Maki Yoshida Ryutaro Ohtsuka Minato Nakazawa Takeo Juji Katsushi Tokunaga 《American journal of physical anthropology》1995,96(2):177-181
DNA typing of HLA-DRB1 genes was conducted for 192 samples from the Gidra who speak one of the non-Austronesian languages and inhabit the southern lowlands of New Guinea. Comparison of the allele frequencies with those of eight other Oceanian populations reveals that the Gidra are genetically closest to the non-Austronesian-speaking Goroka and, next, to the Aboriginal Australian groups, but are remote from the Austronesian-speaking groups in mainland New Guinea and the rest of Melanesia. This finding clearly supports the hypothesis that non-Austronesians and Aboriginal Australians are descendants of the first-stage migrants to Oceania. © 1995 Wiley-Liss, Inc. 相似文献
322.
323.
Takahiro Ide Shota Mochiji Noriko Ueki Katsushi Yamaguchi Shuji Shigenobu Masafumi Hirono Ken-ichi Wakabayashi 《Biochemistry and Biophysics Reports》2016
The unicellular green alga Chlamydomonas reinhardtii is a model organism for various studies in biology. CC-124 is a laboratory strain widely used as a wild type. However, this strain is known to carry agg1 mutation, which causes cells to swim away from the light source (negative phototaxis), in contrast to the cells of other wild-type strains, which swim toward the light source (positive phototaxis). Here we identified the causative gene of agg1 (AGG1) using AFLP-based gene mapping and whole genome next-generation sequencing. This gene encodes a 36-kDa protein containing a Fibronectin type III domain and a CHORD-Sgt1 (CS) domain. The gene product is localized to the cell body and not to flagella or basal body. 相似文献
324.
Katsushi Manabe Norifumi Ibushi Akisato Nakayama Shin-ichi Takaya Michizo Sugai 《Physiologia plantarum》1987,70(4):571-576
We investigated whether the gradual increase in phytochrome content in the fern Lygodium japonicum (Thunb.) Sw. during dark imbibition results from hydration or from biosynthesis of phytochrome. Addition of gabaculine or cycloheximide to the culture medium caused inhibitions of both red light-induced spore germination and of the appearance of phytochrome in the spores. Fifty percent inhibition of both red light-induced germination and of the appearance of phytochrome in the spores occurred at ca 10− 7 M cycloheximide. Red light-induced germination and phytochrome appearance were markedly inhibited by 10− 4 M and completely by 10− 3 M gabaculine, but germination induced by gibberellic acid was unaffected. Phytochrome was not detected in spores after forced hydration. These results suggest that the increase in phytochrome during imbibition was mainly due to de novo synthesis of the phytochrome apoprotein and to synthesis of the chromophore and/or proteins required for phytochrome formation, rather than to hydration of preexisting phytochrome molecules. 相似文献
325.