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籽粒苋类II型金属硫蛋白基因的分离及其表达分析 总被引:2,自引:0,他引:2
Metallothioneins (MTs) are a group of small,Cys-rich, metal-binding proteins. Plant MTs are divided into two types based predominantly upon the arrangement of Cys residues: those only containing the Cys-Xaa-Cys (Xaa is an amino acid other than Cys)metal-binding motif (type 1) and those containing a combination of the Cys-Cys,Cys-Xaa-Cys and Cys-Xaa-Xaa-Cys motifs (type 2).Both type 1 and type 2 contain two Cys-rich MT-like amino- and carboxyl-terminal domains separated by a central region of about 40 residues which is devoid of Cys (Robinson et al.,1993).Here we report a type 2 MT from amaranth. 相似文献
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籽粒苋(Amaranthus cruentus L.)核糖体蛋白S25基因(cDNA)的克隆及其表达分析 总被引:3,自引:0,他引:3
Ribosomes, the agents of protein synthesis, consist
of roughly equal amounts of RNA (rRNA) and protein
(r-protein). Knowledge of the ribosome and its function
mainly comes from the extensive work on 70S bacterial
ribosomes. There are 21 proteins in the small (30S)
subunit and 30 in the large (50S) subunit in E. coil ri
bosomes. The 80S eukaryotic ribosomes are more com
plex than the bacterial ones and contain at least 30 pro
teins in the small (40S) subunit and 40 in the large (60
S) subunit. These r-proteins are named S1 to S30 and
L1 to L40 according to whether they arise from the small
or large subunit, and to their mobility in gels. In plants,
several ribosomal protein genes and/or cDNAs have
been isolated, such as the small subunit proteins S 11,
S13, S14, S16, and S19 and the large subunit proteins
L2, L7, L17, and L27. Here we report the r-protein
S25 cDNA, Arps25, from Amaranthus cruentus L. 相似文献
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