6533b824fe1ef96bd1280bc2

RESEARCH PRODUCT

Proton dynamics in bacterial spores, a neutron scattering investigation

Jean-marie Perrier-cornetJudith PetersFrancesca NataliNicolas MartinezPatrick GervaisAlexandre Colas De La Noue

subject

Mean squareProton[SDV.BBM.BS]Life Sciences [q-bio]/Biochemistry Molecular Biology/Structural Biology [q-bio.BM]ChemistryPhysicsQC1-999[PHYS.PHYS.PHYS-BIO-PH]Physics [physics]/Physics [physics]/Biological Physics [physics.bio-ph]Dynamics (mechanics)neutron scatteringAnalytical chemistryNeutron scattering[ SDV.MP.BAC ] Life Sciences [q-bio]/Microbiology and Parasitology/BacteriologyEndothermic processEndospore[SDV.MP.BAC]Life Sciences [q-bio]/Microbiology and Parasitology/BacteriologyCrystallographybacterial sporesDifferential scanning calorimetry[ PHYS.PHYS.PHYS-BIO-PH ] Physics [physics]/Physics [physics]/Biological Physics [physics.bio-ph]Thermal[ SDV.BBM.BS ] Life Sciences [q-bio]/Biochemistry Molecular Biology/Biomolecules [q-bio.BM]

description

International audience; Results from first neutron scattering experiments on bacterial spores are reported. The elastic intensities and mean square displacements have a non-linear behaviour as function of temperature, which is in agreement with a model presenting more pronounced variations at around 330 K (57 • C) and 400 K (127 • C). Based on the available literature on thermal properties of bacterial spores, mainly referring to differential scanning calorimetry, they are suggested to be associated to main endothermic transitions induced by coat and/or core bacterial response to heat treatment.

10.1051/epjconf/20158302003https://hal.archives-ouvertes.fr/hal-01582588