Science - USA (2019-02-15)

with a scaling that can be described by the function ( 15 )abI^2 /(1 +bI), whereIis the laser intensity andaandbare constants. A ...

compatible with technology used in the electro- nics industry. This method offers advantages compared to conventional optical te ...

NANOMATERIALS Chemically reversible isomerization of inorganic clusters Curtis B. Williamson^1 , Douglas R. Nevers^1 , Andrew Ne ...

a-Cd 37 S 20 films to methanol vapor, the exciton (first absorption) peak diminished, and a second narrow absorption peak emerge ...

by Cd and S, respectively. PDF analysis is an effective tool for atomic modeling that resolves fine features and subtle differen ...

Although this shoulder was absent inb-Cd 37 S 20 , the spectral area of thenasbetween the isomers is preserved, implying no chan ...

two isomers in coexistence with each other, the transformation must be kinetically controlled, and comparison to thermodynamic p ...

GEOPHYSICS Inferring Earth’s discontinuous chemical layering from the 660-kilometer boundary topography Wenbo Wu1,2,3, Sidao Ni^ ...

which asymmetrical scattering wavesP'•d•P'are readily observable ( 24 – 26 ). Because the 660-km discontinuity has a much lower ...

10-km IL array) might have insufficient resolu- tion. Signals arrive with azimuths of about ±120° off the great circle paths and ...

P'• 660 • P'synthetics (Fig. 3C, red lines) with C2D= 100 m matched the data well in terms of both the onset and shapes, and we ...

Sea of Okhotsk earthquake (Fig. 4A and table S1). Unlike the Bolivia earthquake (Fig. 3C),P'SurfP' is even weaker thanP'• 660 • ...

STRUCTURAL BIOLOGY How a circularized tmRNA moves through the ribosome Christopher D. Rae, Yuliya Gordiyenko, V. Ramakrishnan* D ...

A1493 (Fig. 1B). This observation is consistent with earlier biochemical probing experiments, which suggest that the binding of ...

after accommodation (Fig. 1C), thus indicating that the shift is due to differences between species. An interaction between a si ...

subunit is in a closed conformation. Ramrath et al.( 12 ) suggest that passing through the A-site latch occurs via an extra larg ...

STRUCTURAL BIOLOGY Structural insight into nucleosome transcription by RNA polymerase II with elongation factors Haruhiko Ehara^ ...

two H2A-H2B dimers and its adjacent H3-H4, but the EC retains the intact histone octamer (Fig. 1D and fig. S6). Elf1 is located ...

We elucidated how the conserved elongation factors facilitate efficient RNAPII passage through a nucleosome (Fig. 4). This may b ...

REFERENCES AND NOTES P. Cramer, D. A. Bushnell, R. D. Kornberg,Science 292 , 1863 – 1876 (2001). K. Luger, A. W. Mäder, R. K. R ...