Learn More
In stressed cells, apoptosis ensues when Bcl-2 family members Bax or Bak oligomerize and permeabilize the mitochondrial outer membrane. Certain BH3-only relatives can directly activate them to mediate this pivotal, poorly understood step. To clarify the conformational changes that induce Bax oligomerization, we determined crystal structures of BaxΔC21(More)
  • R B Husar, D M Tratt, B A Schichtel, S R Falke, F Li, D Jaffe +7 others
  • 2001
On April 15 and 19, 1998, two intense dust storms were generated over the Gobi desert by springtime low-pressure systems descending from the northwest. The windblown dust was detected and its evolution followed by its yellow color on SeaWiFS satellite images, routine surface-based monitoring, and through serendipitous observations. The April 15 dust cloud(More)
  • J Breitweg, M Derrick, D Krakauer, S Magill, D Mikunas, B Musgrave +403 others
  • 2008
The photoproduction reaction γp → µ + µ − p has been studied in ep interactions using the ZEUS detector at HERA. The data sample corresponds to an integrated luminosity of 43.2 pb −1. The Υ meson has been observed in photoproduction for the first time. The sum of the products of the elastic Υ(1S), Υ(2S), Υ(3S) photoproduction cross sections with their(More)
  • Zeus Collaboration, J Breitweg, S Chekanov, M Derrick, D Krakauer, S Magill +412 others
  • 2007
Exclusive production of 0 and J== mesons in e + p collisions has been studied with the ZEUS detector in the kinematic range 0:25 < Q 2 < 50 GeV 2 , 20 < W < 167 GeV for the 0 data and 2 < Q 2 < 40 GeV 2 , 50 < W < 150 GeV for the J== data. Cross sections for exclusive 0 and J== production have been measured as a function of Q 2 , W and t. The spin-density(More)
  • J Breitweg, M Derrick, D Krakauer, S Magill, D Mikunas, B Musgrave +421 others
  • 2007
Using the ZEUS detector at HERA, we have studied the reaction e + p ! e + X for Q 2 > 5000 GeV 2 with a 20:1 pb ?1 data sample collected during the years 1994 to 1996. For Q 2 below 15000GeV 2 , the data are in good agreement with Standard Model expectations. For Q 2 > 35000 GeV 2 , two events are observed while 0:145 0:013 events are expected. A(More)
  • J Breitweg, M Derrick, D Krakauer, S Magill, D Mikunas, B Musgrave +412 others
  • 1997
The reaction γ p → J/ψ p has been studied in ep interactions using the ZEUS detector at HERA. The cross section for elastic J/ψ photoproduction has been measured as a function of the photon-proton centre of mass energy W in the range 40 < W < 140 GeV at a median photon virtuality Q 2 of 5 × 10 −5 GeV 2. The photoproduction cross section, σ γp→J/ψp , is(More)
  • Zeus Collaboration, M Derrick, D Krakauer, S Magill, B Musgrave, J Repond +449 others
  • 1995
Events with a large rapidity gap and total transverse energy greater than 5 GeV have been observed in quasi-real photoproduction at HERA with the ZEUS detector. The distribution of these events as a function of the γp centre of mass energy is consistent with diffractive scattering. For total transverse energies above 12 GeV, the hadronic final states show(More)
  • J Breitweg, M Derrick, D Krakauer, S Magill, D Mikunas, B Musgrave +407 others
  • 1998
Differential dijet cross sections have been measured with the ZEUS detector for pho-toproduction events in which the hadronic final state containing the jets is separated with respect to the outgoing proton direction by a large rapidity gap. The cross section has been measured as a function of the fraction of the photon (x OBS γ) and pomeron (β OBS)(More)
  • J Breitweg, M Derrick, D Krakauer, S Magill, D Mikunas, B Musgrave +416 others
  • 2008
We present a measurement of the inelastic, non diffractive J/ψ photoproduction cross section in the reaction e + p → e + J/ψX with the ZEUS detector at HERA. The J/ψ was identified using both the µ + µ − and e + e − decay channels and events were selected within the range 0.4 < z < 0.9 (0.5 < z < 0.9) for the muon (electron) decay mode, where z is the(More)
  • J Breitweg, M Derrick, D Krakauer, S Magill, D Mikunas, B Musgrave +413 others
  • 2008
A global event shape analysis of the multihadronic final states observed in neutral current deep inelastic scattering events with a large rapidity gap with respect to the proton direction is presented. The analysis is performed in the range 5 ≤ Q 2 ≤ 185 GeV 2 and 160 ≤ W ≤ 250 GeV, where Q 2 is the virtuality of the photon and W is the virtual-photon(More)