Results 41 to 50 of about 601,863 (315)
Structural biology of ferritin nanocages
FEBS Letters, EarlyView.Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley +1 more source
International Journal of Distributed Sensor Networks, 2015 By exploiting the spatial diversity of multiple wireless nodes, cooperative communication technique is a promising technique for spectrum sharing to improve spectrum efficiency.
Nan Zhao, Minghu Wu, Wei Xiong, Cong Liu
doaj +1 more source
Optimality of Contraction-Driven Crawling [PDF]
Physical Review Letters, 2014 We study a model of cell motility where the condition of optimal trade-off between performance and metabolic cost can be made precise. In this model a steadily crawling fragment is represented by a layer of active gel placed on a frictional surface and driven by contraction only.
Recho, P. +2 more
openaire +3 more sources
AAA+ protein unfoldases—the Moirai of the proteome
FEBS Letters, EarlyView.AAA+ unfoldases are essential molecular motors that power protein degradation and disaggregation. This review integrates recent cryo‐electron microscopy (cryo‐EM) structures and single‐molecule biophysical data to reconcile competing models of substrate translocation.
Stavros Azinas, Marta Carroni
wiley +1 more source
The Model of Distributor Chain Financing Based on Buy Back Guarantee Contract
Journal of Applied Mathematics, 2014 This paper considers the strategy employed by a buy back guarantee contract with a capital-constrained distributor and a core enterprise. The distributor faces a nonnegative random demand, and the core enterprise applies buy back guarantee contract in ...
Jian-xin Chen, Jia-yin Chen
doaj +1 more source
Molecular Oncology, EarlyView.Aldehyde dehydrogenase 1A1 (ALDH1A1) is a cancer stem cell marker in several malignancies. We established a novel epithelial cell line from rectal adenocarcinoma with unique overexpression of this enzyme. Genetic attenuation of ALDH1A1 led to increased invasive capacity and metastatic potential, the inhibition of proliferation activity, and ultimately ...
Martina Poturnajova +25 more
wiley +1 more source
Optimization of Risk-sharing in Buyback Contracts Based on the Application of Agency Theory [PDF]
Pizhūhishnāmah-i Iqtiṣād-i Inirzhī-i Īrān, 2015 Pricing and risk sharing in oil and gas service contracts such as buyback has always been the most important challenges in the contracting design. Asymmetric information leads to agency costs such as moral hazard and adverse selection and the process of ...
Seyed Mohammadreza Seyednourani +1 more
doaj +1 more source
Optimal contracts for renewable electricity
Energy Economics, 2020 Abstract Companies are increasingly choosing to procure their power from renewable energy sources, with their own set of potential challenges. This paper characterizes the contracts that minimize the cost of procuring a given amount of renewable energy from two risk averse, energy generators who are inherently unreliable (such as wind and solar).
Sarah Parlane, Lisa Ryan
openaire +3 more sources
Molecular Oncology, EarlyView.Keratin 19 (KRT19) is overexpressed in high‐grade serous ovarian cancer with high levels of Kallikrein‐related peptidases (KLK) 4–7 and is associated with poor survival. In vivo analyses demonstrate that elevated KRT19 increases peritoneal tumour burden.
Sophia Bielesch +13 more
wiley +1 more source