Anharmonic vibrations around a triaxial nuclear deformation “frozen” to γ = 30°

2015 ◽  
Author(s):  
Petrica Buganu ◽  
Radu Budaca
Keyword(s):  
Nuclear Deformation ◽  
Anharmonic Vibrations

scholarly journals OASIS/CREB3L1 is a factor that responds to nuclear envelope stress

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Yasunao Kamikawa ◽  
Atsushi Saito ◽  
Koji Matsuhisa ◽  
Masayuki Kaneko ◽  
Rie Asada ◽  
...  
Keyword(s):  
Cell Cycle ◽  
Endoplasmic Reticulum ◽  
Nuclear Envelope ◽  
Genome Instability ◽  
Nuclear Lamina ◽  
Nuclear Deformation ◽  
Membrane Domain ◽  
Stress Response Pathway ◽  
Envelope Stress ◽  
Genome Activity

AbstractThe nuclear envelope (NE) safeguards the genome and is pivotal for regulating genome activity as the structural scaffold of higher-order chromatin organization. NE had been thought as the stable during the interphase of cell cycle. However, recent studies have revealed that the NE can be damaged by various stresses such as mechanical stress and cellular senescence. These types of stresses are called NE stress. It has been proposed that NE stress is closely related to cellular dysfunctions such as genome instability and cell death. Here, we found that an endoplasmic reticulum (ER)-resident transmembrane transcription factor, OASIS, accumulates at damaged NE. Notably, the major components of nuclear lamina, Lamin proteins were depleted at the NE where OASIS accumulates. We previously demonstrated that OASIS is cleaved at the membrane domain in response to ER stress. In contrast, OASIS accumulates as the full-length form to damaged NE in response to NE stress. The accumulation to damaged NE is specific for OASIS among OASIS family members. Intriguingly, OASIS colocalizes with the components of linker of nucleoskeleton and cytoskeleton complexes, SUN2 and Nesprin-2 at the damaged NE. OASIS partially colocalizes with BAF, LEM domain proteins, and a component of ESCRT III, which are involved in the repair of ruptured NE. Furthermore, OASIS suppresses DNA damage induced by NE stress and restores nuclear deformation under NE stress conditions. Our findings reveal a novel NE stress response pathway mediated by OASIS.

Nuclear Deformation: A Proton-Neutron Effect?

1988 ◽  
Vol 60 (22) ◽  
pp. 2254-2257 ◽  
Author(s):  
J. Dobaczewski ◽  
W. Nazarewicz ◽  
J. Skalski ◽  
T. Werner
Keyword(s):  
Nuclear Deformation

Nuclear deformation energy curves with the constrained Hartree-Fock method

1973 ◽  
Vol 203 (3) ◽  
pp. 433-472 ◽  
Author(s):  
H. Flocard ◽  
P. Quentin ◽  
A.K. Kerman ◽  
D. Vautherin
Keyword(s):  
Deformation Energy ◽  
Nuclear Deformation ◽  
Hartree Fock

EVOLUTION OF DEFORMATIONS IN SD AND PF SHELL NUCLEI

2006 ◽  
Vol 15 (08) ◽  
pp. 1779-1788
Author(s):  
XIAN-RONG ZHOU ◽  
H. SAGAWA ◽  
XI-ZHEN ZHANG
Keyword(s):  
Mass Number ◽  
Nuclear Deformation ◽  
Quadrupole Moments ◽  
Many Body ◽  
Hartree Fock ◽  
Pairing Correlations ◽  
Many Body Systems ◽  
Pf Shell ◽  
Vibration Coupling ◽  
Hf Calculations

In the frame of deformed Skyrme Hartree-Fock (HF) model with pairing correlations, the strong mass number dependence of quadrupole deformations in sd and pf shell nuclei with mass A =(16 ~ 56) is studied as a clear manifestation of the evolution of nuclear deformation in nuclear many-body systems. The competition between the deformation driving particle-vibration coupling and the shell structure is shown by a systematic study on the ratios of the protons to neutrons quadrupole moments in nuclei with T =| T z|=1. The mass number dependence of deformations obtained by deformed HF calculations is compared with the results of shell model and experimental data.

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