排序方式: 共有23条查询结果,搜索用时 0 毫秒
21.
22.
23.
Wanneng Wang Zongli Hu Jinzhe Li Xuqing Chen Guoping Chen 《Biochemistry. Biokhimii?a》2009,74(7):807-812
The peripheral light-harvesting complex II (LHII) is an important component of the photosynthetic apparatus of Rhodobacter sphaeroides. In this study, genetic, biochemical, and spectroscopic approaches were applied to investigate the spectral properties and
functions of LHII in which two amino acid residues Phe32 and Leu42 in the transmembrane helix domain of pucB-encoded β-apoprotein were replaced by Leu and Pro. The mutated LHII complex showed blue shift of absorbance peaks in the
near infrared region at ∼801–845 nm in R. sphaeroides. It should be noted that the B800 peak was much lower than that of the native LHII, and transfer energy was efficient from
the B800 to the B850 pigments in the LHII complex. The results suggest that the mutated pucB could be expressed in R. sphaeroides, and the functional LHII was assembled into the membrane of R. sphaeroides notwithstanding with the different spectral properties. These mutated residues were indeed critical for the modulation of
characteristics and function of LHII complex.
Published in Russian in Biokhimiya, 2009, Vol. 74, No. 7, pp. 993–999. 相似文献