Adaptation of the base-paired double-helix molecular architecture to extreme pressure.Girard, E., Prange, T., Dhaussy, A.C., Migianu-Griffoni, E., Lecouvey, M., Chervin, J.C., Mezouar, M., Kahn, R., Fourme, R.
(2007) Nucleic Acids Res. 35: 4800-4808
- PubMed: 17617642
- DOI: 10.1093/nar/gkm511
- Primary Citation of Related Structures:
- PubMed Abstract:
- High-pressure protein crystallography (HPPX): Instrumentation, methodology and results on lysozyme crystals
Fourme, R.,Kahn, R.,Mezouar, M.,Girard, E.,Horentrup, C.,Prange, T.,Ascone, I.
(2001) J.Synchrotron Radia. 8: 1149
- High pressure macromolecular crystallography: The 140 MPa crystal structure at 2.3 A resolution of urate oxidase, A 135 KD tetrameric assembly
Colloc'h, N.,Girard, E.,Dhaussy, A.C.,Kahn, R.,Ascone, I.,Mezouar, M.,Fourme, R.
(2006) BIOCHEM.BIOPHYS.ACTA PROTEINS & PROTEOMICS 1764: 391
- Crystal structure of hen egg-white lysozyme at a hydrostatic pressure of 1000 atmospheres.
Kundrot, C.E.,Richards, F.M.
(1987) J.Mol.Biol. 193: 157
- Coexistence of A-and B-Form DNA in a Single Crystal Lattice
Doucet, J.,Benoit, J.-P.,Cruse, W.B.T.,Prange, T.,Kennard, O.
(1989) Nature 337: 190
The behaviour of the d(GGTATACC) oligonucleotide has been investigated by X-ray crystallography at 295 K in the range from ambient pressure to 2 GPa (approximately 20,000 atm). Four 3D-structures of the A-DNA form (at ambient pressure, 0.55, 1.09 and ...
The behaviour of the d(GGTATACC) oligonucleotide has been investigated by X-ray crystallography at 295 K in the range from ambient pressure to 2 GPa (approximately 20,000 atm). Four 3D-structures of the A-DNA form (at ambient pressure, 0.55, 1.09 and 1.39 GPa) were refined at 1.60 or 1.65 A resolution. In addition to the diffraction pattern of the A-form, the broad meridional streaks previously explained by occluded B-DNA octamers within the channels of the crystalline A-form matrix were observed up to at least 2 GPa. This work highlights an important property of nucleic acids, their capability to withstand very high pressures, while keeping in such conditions a nearly invariant geometry of base pairs that store and carry genetic information. The double-helix base-paired architecture behaves as a molecular spring, which makes it especially adapted to very harsh conditions. These features may have contributed to the emergence of a RNA World at prebiotic stage.
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