Results 131 to 140 of about 4,721,201 (422)

An enzyme in disguise [PDF]

open access: yesIUCrJ, 2020
The enzyme carbonic anhydrase binds its zinc ion by three histidine residues in a similar manner to the way copper is bound to nitrite reductase. This remote similarity has now been shown to be real [Andring et al. (2020). IUCrJ, 7, 287-293]. A carbonic anhydrase with two bound copper ions is also a nitrite reductase.
openaire   +4 more sources

Unlocking the potential of tumor‐derived DNA in urine for cancer detection: methodological challenges and opportunities

open access: yesMolecular Oncology, EarlyView.
Urine is a rich source of biomarkers for cancer detection. Tumor‐derived material is released into the bloodstream and transported to the urine. Urine can easily be collected from individuals, allowing non‐invasive cancer detection. This review discusses the rationale behind urine‐based cancer detection and its potential for cancer diagnostics ...
Birgit M. M. Wever   +1 more
wiley   +1 more source

In vitro simulated study of macronutrient digestion in complex food using digestive enzyme supplement

open access: yesHeliyon
Digestive enzymes secreted by the body are vital for digestion and nutrient absorption. Enzyme supplements are commonly used to support them in achieving optimal digestion.
Abhijit Rathi   +4 more
doaj  

Mechanistic Understanding of Lanthipeptide Biosynthetic Enzymes

open access: yesChemical Reviews, 2017
Lanthipeptides are ribosomally synthesized and post-translationally modified peptides (RiPPs) that display a wide variety of biological activities, from antimicrobial to antiallodynic.
Lindsay M. Repka   +3 more
semanticscholar   +1 more source

Snf2 family ATPases and DExx box helicases:differences and unifying concepts from high-resolution crystal structures [PDF]

open access: yes, 2006
Proteins with sequence similarity to the yeast Snf2 protein form a large family of ATPases that act to alter the structure of a diverse range of DNA–protein structures including chromatin. Snf2 family enzymes are related in sequence to DExx box helicases,
Aasland   +95 more
core   +3 more sources

Surfaceome: a new era in the discovery of immune evasion mechanisms of circulating tumor cells

open access: yesMolecular Oncology, EarlyView.
In the era of immunotherapies, many patients either do not respond or eventually develop resistance. We propose to pave the way for proteomic analysis of surface‐expressed proteins called surfaceome, of circulating tumor cells. This approach seeks to identify immune evasion mechanisms and discover potential therapeutic targets. Circulating tumor cells (
Doryan Masmoudi   +3 more
wiley   +1 more source

Glycosyltransferase engineering and multi-glycosylation routes development facilitating synthesis of high-intensity sweetener mogrosides

open access: yesiScience, 2022
Summary: Mogrosides are widely served as natural zero-calorie sweeteners. To date, the biosynthesis of high-intensity sweetness mogrosides V from mogrol has not been achieved because of inefficient and uncontrollable multi-glycosylation process.
Jiao Li   +8 more
doaj  

Hyperthermophilic Enzymes: Sources, Uses, and Molecular Mechanisms for Thermostability

open access: yesMicrobiology and Molecular Biology Reviews, 2001
SUMMARY Enzymes synthesized by hyperthermophiles (bacteria and archaea with optimal growth temperatures of >80°C), also called hyperthermophilic enzymes, are typically thermostable (i.e., resistant to irreversible inactivation at high temperatures) and ...
C. Vieille, G. Zeikus
semanticscholar   +1 more source

Primase-polymerases are a functionally diverse superfamily of replication and repair enzymes [PDF]

open access: yes, 2015
Until relatively recently, DNA primases were viewed simply as a class of proteins that synthesize short RNA primers requisite for the initiation of DNA replication.
Aidan J. Doherty   +17 more
core   +1 more source

How an Enzyme Can Be a Non-Enzyme [PDF]

open access: yesStructure, 2004
AbstractThe crystal structure of the endonuclease, ribonuclease III, in complex with a double-stranded RNA fragment reveals the mechanism that allows for switching between two functional forms of the enzyme.
openaire   +4 more sources

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