Results 81 to 90 of about 1,452,669 (308)

Structural and biochemical analysis of a B12 superbinder

open access: yesFEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices   +3 more
wiley   +1 more source

Ivy Leaves, Volume 97

open access: yes, 2022
The 2022 edition of the Anderson University journal of art and literature, Ivy Leaves. The names of the known editors for this issue of Ivy Leaves were Samantha Brooks, Gabrielle Morgan, Lily McNamara, Perry Diamaduros, Rebekah McCallum, Slone Pearce, Jo
Ivy Leaves Editorial Staff,
core  

Print of leaves

open access: yes
Original print of several blue and green leaves against a reddish ...
Hoxie, Margaret
core   +1 more source

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

Antimicrobial activity screening of isolated flavonoids from Azadirachta indica leaves [PDF]

open access: yesJournal of the Serbian Chemical Society, 2011
The antimicrobial activities of two flavonoids, namely genistein 7-O-glucoside (1) and (–)-epi-catechin (2), isolated from Azadirachta indica A. Juss (neem) leaves, were evaluated against five fungal species, viz: Alternaria alternata (Fr.) Keissler ...
QUDSIA KANWAL   +3 more
doaj  

HPLC-DAD-ESI-MS Analysis of Flavonoids from Leaves of Different Cultivars of Sweet Osmanthus

open access: yesMolecules, 2016
Osmanthus fragrans Lour. has traditionally been a popular ornamental plant in China. In this study, ethanol extracts of the leaves of four cultivar groups of O.
Yiguang Wang   +3 more
doaj   +1 more source

From junk to function — How weak selection in eukaryotes builds new parts and drives genomic complexity

open access: yesFEBS Letters, EarlyView.
How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley   +1 more source

Effect of Postharvest LED Application on Phenolic and Antioxidant Components of Blueberry Leaves

open access: yesChemEngineering, 2018
Light from red (661 nm) and blue (417 nm) LEDs were applied for 12, 24, and 48 h on freshly harvested blueberry leaves of different cultivars mixed together.
Winny Routray   +2 more
doaj   +1 more source

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

Antioxidant Activity and Total Flavonoid of Carica papaya L. Leaves with Different Varieties, Maturity and Solvent

open access: yesAgritech, 2019
Carica papaya leaves are one of the vegetables consumed by Indonesian people, especially in Java Island. Carica papaya is easy to grow in Indonesia and has many variants, so, Carica Papaya leaves is a local potent to be developed for functional food and ...
Fatma Zuhrotun Nisa   +3 more
doaj   +1 more source

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