Table 1

Solution structure and basis for functional activity of stromal cell-derived factor-1; dissociation of CXCR4 activation from binding and inhibition of HIV-1

Matthew P. Crump, Jiang-Hong Gong, Pius Loetscher, Krishna Rajarathnam, Ali Amara, Fernando Arenzana-Seisdedos, Jean-Louis Virelizier, Marco Baggiolini, Brian D. Sykes and Ian Clark-Lewis

  • The EMBO Journal (1997) 16, 6996 - 7007
  • doi:10.1093/emboj/16.23.6996
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All (796)a0.027 plusminus 0.001
Inter-residue (centre averaged)a
  Short (1 < |i-j| less than or equal to 5)0.039 plusminus 0.015
  Sequential (|i-j| = 1)0.024 plusminus 0.003
  Long (|i-j| > 5)0.029 plusminus 0.015
Inter-residue (R-6 averaged)a
  Long0.025 plusminus 0.008
Intra-residue (centre averaged)a0.020 plusminus 0.002
  i = j0.020 plusminus 0.008
ENOE (kcal/mol)b29.0 plusminus 1.9
EDIHE (kcal/mol)b1.49 plusminus 0.3
EREPEL (kcal/mol)b0.06 plusminus 0.05
Deviations from idealized geometryc
  Bonds (Å)0.0031 plusminus 0.0001
  Angles (°)0.530 plusminus 0.008
  Improper (°)0.368 plusminus 0.007
Atomic r.m.s. differences (Å)d
  Backbone atoms (9–65)0.35 plusminus 0.1
  Heavy atoms (9–65)0.96 plusminus 0.09
aThe r.m.s. deviation of the experimental restraints (Å) is calculated with respect to the upper and lower limits of the input restraints.
bThe values for ENOE and EDIHE are calculated from a square well potential with a force constant of 50 kcal mol-1 Å2 and 200 kcal mol-1 rad-2. EREPEL is calculated with a force constant of 4 kcal mol-1 Å-4 and the final van der Waal's radii were set to 0.75 times the value used in the CHARMM force field.
cThe values for bonds, angles and impropers show the deviation from ideal values based on perfect stereochemistry.
dR.m.s. differences of the 30 final simulated annealing structures superimposed on the average structure.
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