Results 61 to 70 of about 6,679,972 (285)

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

open access: yesFEBS Letters, EarlyView.
Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav   +2 more
wiley   +1 more source

Study on Water Entry Process of Vehicle Under Restriction of Underwater Ice Hole

open access: yes水下无人系统学报
The water entry process of a vehicle passing through an underwater ice hole is of great engineering significance in the launching operation of polar ocean detectors and the deployment strategy of related equipment in polar regions.
Xinyu HU, Cong WANG, Yingjie WEI
doaj   +1 more source

Aquaporins. A Molecular Entry into Plant Water Relations [PDF]

open access: yesPlant Physiology, 2001
Water relations are obviously crucial to the physiology of terrestrial plants, but 25 years ago most plant biologists viewed this area of research as somewhat of an oddity. Dominated by equations and unusual physical theories about liquids flowing in pipes, water relations seemed to be a field ...
C, Maurel, M J, Chrispeels
openaire   +2 more sources

Chiral separation of chloroalkanes with the chromatographic column onboard Martian rovers

open access: yesFEBS Letters, EarlyView.
Computer image of the Rosalind Franklin Rover of ESA's ExoMars mission. ExoMars is scheduled to land on planet Mars in Oxia Planum in 2029. This area represents an interesting spot to look for biosignatures. Investigations of ExoMars include measurement on molecular chirality. We show that chiral chloroalkanes, that have been identified on Mars, can be
Asma Merzougui   +4 more
wiley   +1 more source

Experimental Analysis of slam-induced pressure on the bow-segment of surface ship

open access: yesنشریه مهندسی دریا, 2021
Today, determination of slam-induced pressure is one of the interested issue of the researchers. Water entry of bow section of a ship is experimentally examined, in order to investigation of slamming pressure.
Mojtaba Shokri   +3 more
doaj  

L‐aspartate oxidase provides new insights into fumarate reduction in anaerobic darkness in Synechocystis sp. PCC6803

open access: yesFEBS Letters, EarlyView.
Synechocystis strains deficient in succinate dehydrogenase (SDH) secrete more succinate than the WT under dark anaerobic conditions, supporting that SDH then primarily acts as SDH, not as a fumarate reductase. L‐aspartate oxidase (Laspo) from Synechocystis is functional under anaerobic conditions, reducing fumarate to succinate.
Kateryna Kukil   +3 more
wiley   +1 more source

Comparison of High-Speed Water Entry Movement Process of Axisymmetric Bodies with Different Head Shapes

open access: yes水下无人系统学报
High-speed water entry of the trans-medium axisymmetric body is an instantaneous flow process, involving the complex multiphase flow of the axisymmetric body with the gas and liquid phases.
Yu WANG   +5 more
doaj   +1 more source

Sites of entry of water into the symplast of maize roots [PDF]

open access: yesNew Phytologist, 1993
SUMMARYFollowing our publication of a new method of calculating rates of water uptake by roots from measurements of the rate of accumulation on the roots of a marker solute, this paper describes the sites of accumulation of the solute, which indicate the sites where the water entered the symplast.
G T, Varney, M E, McCully, M J, Canny
openaire   +2 more sources

Artificial molecular machines and motors—Design and control of nanoscale motion

open access: yesFEBS Letters, EarlyView.
Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley   +1 more source

The Dynamic Characteristics of the Water Entry of a Lifeboat

open access: yesJournal of Marine Science and Engineering
The International Convention for the Safety of Life at Sea (SOLAS) stipulates that all ships must be equipped with lifesaving devices. The freefall lifeboat has the advantages of simple operation, fast release speed, and good safety performance, so it is
Wenxin Yi   +5 more
doaj   +1 more source

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