Crystal structure of NusG N-terminal (NGN) domain from Methanocaldococcus jannaschii and its interaction with rpoE″

2009 ◽  
Vol 76 (4) ◽  
pp. 787-793 ◽  
Author(s):  
Huihao Zhou ◽  
Qi Liu ◽  
Yongxiang Gao ◽  
Maikun Teng ◽  
Liwen Niu
Keyword(s):  
Crystal Structure ◽  
Methanocaldococcus Jannaschii

Crystal structure analysis of a hypothetical protein (MJ0366) from Methanocaldococcus jannaschii revealed a novel topological arrangement of the knot fold

2017 ◽  
Vol 482 (2) ◽  
pp. 264-269 ◽  
Author(s):  
Viswanathan Thiruselvam ◽  
Thirumananseri Kumarevel ◽  
Ponnuraj Karthe ◽  
Seiki Kuramitsu ◽  
Shigeyuki Yokoyama ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Structure Analysis ◽  
Hypothetical Protein ◽  
Crystal Structure Analysis ◽  
Methanocaldococcus Jannaschii

scholarly journals Crystal Structure of a Conserved Hypothetical Protein MJ0927 fromMethanocaldococcus jannaschiiReveals a Novel Quaternary Assembly in the Nif3 Family

2014 ◽  
Vol 2014 ◽  
pp. 1-8
Author(s):  
Sheng-Chia Chen ◽  
Chi-Hung Huang ◽  
Chia Shin Yang ◽  
Shu-Min Kuan ◽  
Ching-Ting Lin ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Dna Binding ◽  
Hypothetical Protein ◽  
Mobility Shift ◽  
Methanocaldococcus Jannaschii ◽  
Double Stranded Dna ◽  
Family Protein ◽  
Electrophoretic Mobility Shift Assays ◽  
Quaternary Assembly ◽  
Positively Charged

A Nif3 family protein ofMethanocaldococcus jannaschii, MJ0927, is highly conserved from bacteria to humans. Although several structures of bacterial Nif3 proteins are known, no structure representing archaeal Nif3 has yet been reported. The crystal structure ofMethanocaldococcus jannaschiiMJ0927 was determined at 2.47 Å resolution to understand the structural differences between the bacterial and archaeal Nif3 proteins. Intriguingly, MJ0927 is found to adopt an unusual assembly comprising a trimer of dimers that forms a cage-like architecture. Electrophoretic mobility-shift assays indicate that MJ0927 binds to both single-stranded and double-stranded DNA. Structural analysis of MJ0927 reveals a positively charged region that can potentially explain its DNA-binding capability. Taken together, these data suggest that MJ0927 adopts a novel quartenary architecture that could play various DNA-binding roles inMethanocaldococcus jannaschii.

Crystal Structure of Methanocaldococcus jannaschii Trm4 Complexed with Sinefungin

2010 ◽  
Vol 401 (3) ◽  
pp. 323-333 ◽  
Author(s):  
Mitsuo Kuratani ◽  
Masashi Hirano ◽  
Sakurako Goto-Ito ◽  
Yuzuru Itoh ◽  
Yasushi Hikida ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Methanocaldococcus Jannaschii

scholarly journals Crystal structure of ADP-dependent glucokinase from Methanocaldococcus jannaschii in complex with 5-iodotubercidin reveals phosphoryl transfer mechanism

2018 ◽  
Vol 27 (3) ◽  
pp. 790-797 ◽  
Author(s):  
Piotr Tokarz ◽  
Magdalena Wiśniewska ◽  
Marcin M. Kamiński ◽  
Grzegorz Dubin ◽  
Przemysław Grudnik
Keyword(s):  
Crystal Structure ◽  
Transfer Mechanism ◽  
Phosphoryl Transfer ◽  
Methanocaldococcus Jannaschii

Crystal Structure Determination of Glycerol-Containing Lipids from Electron Diffraction Data. Use of Analog Compounds Based upon Configurational Isomers of Cyclopentane-1, 2, 3-TRIOL

1977 ◽  
Vol 35 ◽  
pp. 24-25
Author(s):  
Douglas L. Dorset ◽  
Anthony J. Hancock
Keyword(s):  
Crystal Structure ◽  
Electron Diffraction ◽  
Diffraction Data ◽  
Structure Determination ◽  
Crystal Surface ◽  
Coherent Scattering ◽  
Crystal Structure Determination ◽  
Electron Diffraction Data ◽  
Polar Group ◽  
Axis Orientation

Lipids containing long polymethylene chains were among the first compounds subjected to electron diffraction structure analysis. It was only recently realized, however, that various distortions of thin lipid microcrystal plates, e.g. bends, polar group and methyl end plane disorders, etc. (1-3), restrict coherent scattering to the methylene subcell alone, particularly if undistorted molecular layers have well-defined end planes. Thus, ab initio crystal structure determination on a given single uncharacterized natural lipid using electron diffraction data can only hope to identify the subcell packing and the chain axis orientation with respect to the crystal surface. In lipids based on glycerol, for example, conformations of long chains and polar groups about the C-C bonds of this moiety still would remain unknown.One possible means of surmounting this difficulty is to investigate structural analogs of the material of interest in conjunction with the natural compound itself. Suitable analogs to the glycerol lipids are compounds based on the three configurational isomers of cyclopentane-1,2,3-triol shown in Fig. 1, in which three rotameric forms of the natural glycerol derivatives are fixed by the ring structure (4-7).

Spherulitic crystal growth in the prodissoconch larval of Crassostrea virginica

1983 ◽  
Vol 41 ◽  
pp. 518-519
Author(s):  
George G. Cocks ◽  
Louis Leibovitz ◽  
DoSuk D. Lee
Keyword(s):  
Crystal Structure ◽  
Crassostrea Virginica ◽  
Crystal Orientation ◽  
Developmental Changes ◽  
Gastrula Stage ◽  
Orthorhombic Crystal ◽  
Orthorhombic Crystal Structure ◽  
Stages Of Growth ◽  
Early Stages ◽  
Initial Deposition

Our understanding of the structure and the formation of inorganic minerals in the bivalve shells has been considerably advanced by the use of electron microscope. However, very little is known about the ultrastructure of valves in the larval stage of the oysters. The present study examines the developmental changes which occur between the time of conception to the early stages of Dissoconch in the Crassostrea virginica(Gmelin), focusing on the initial deposition of inorganic crystals by the oysters.The spawning was induced by elevating the temperature of the seawater where the adult oysters were conditioned. The eggs and sperm were collected separately, then immediately mixed for the fertilizations to occur. Fertilized animals were kept in the incubator where various stages of development were stopped and observed. The detailed analysis of the early stages of growth showed that CaCO3 crystals(aragonite), with orthorhombic crystal structure, are deposited as early as gastrula stage(Figuresla-b). The next stage in development, the prodissoconch, revealed that the crystal orientation is in the form of spherulites.

Transmission Electron Microscopy studies of the vacancy ordering in YSI2-X thin films

1991 ◽  
Vol 49 ◽  
pp. 562-563
Author(s):  
F.-R. Chen ◽  
T. L. Lee ◽  
L. J. Chen
Keyword(s):  
Crystal Structure ◽  
Electron Microscopy ◽  
Thin Films ◽  
Diffraction Pattern ◽  
Annealing Temperature ◽  
Lattice Mismatch ◽  
Si Substrate ◽  
Metal Thin Films ◽  
Transmission Electron ◽  
Vacancy Ordering

YSi2-x thin films were grown by depositing the yttrium metal thin films on (111)Si substrate followed by a rapid thermal annealing (RTA) at 450 to 1100°C. The x value of the YSi2-x films ranges from 0 to 0.3. The (0001) plane of the YSi2-x films have an ideal zero lattice mismatch relative to (111)Si surface lattice. The YSi2 has the hexagonal AlB2 crystal structure. The orientation relationship with Si was determined from the diffraction pattern shown in figure 1(a) to be and . The diffraction pattern in figure 1(a) was taken from a specimen annealed at 500°C for 15 second. As the annealing temperature was increased to 600°C, superlattice diffraction spots appear at position as seen in figure 1(b) which may be due to vacancy ordering in the YSi2-x films. The ordered vacancies in YSi2-x form a mesh in Si plane suggested by a LEED experiment.

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