CE ÎNSEAMNĂ RIBOZYME ÎN ENGLEZĂ?
ribozimei
O ribozimă este o moleculă de ARN care este capabilă să catalizeze reacții biochimice specifice, similare cu acțiunea enzimelor proteice. Descoperirea ribozimelor din 1982 a demonstrat că ARN poate fi atât material genetic, cât și un catalizator biologic și a contribuit la ipoteza mondială a ARN, ceea ce sugerează că ARN poate fi important în evoluția sistemelor prebiotice de auto-replicare. De asemenea, denumit ARN catalitic, ribozimele funcționează în cadrul ribozomului pentru a lega aminoacizii în timpul sintezei proteinelor și într-o varietate de reacții de procesare a ARN, incluzând splicingul ARN, replicarea virală și biosinteza ARN-ului de transfer. Exemplele de ribozime includ ribozimul cu ciocan, ribozimul VS și ribozimul de ac de păr. Investigatorii care studiaza originea vietii au produs ribozime in laborator care sunt capabile sa-si catalizeze propria sinteza in conditii foarte specifice, cum ar fi ribozima polimerazei ARN. S-a efectuat mutageneza și selecția, rezultând izolarea unor variante îmbunătățite ale ribozimelor polimerazice "Round-18" din 2001. "B6.
Definiția ribozyme în dicționarul Engleză
Definiția ribozimului din dicționar este o moleculă de ARN capabilă să catalizeze o reacție chimică, de obicei scindarea altei molecule de ARN.
CĂRȚI ÎN ENGLEZĂ ÎN LEGĂTURĂ CU «RIBOZYME»
Descoperă întrebuințarea
ribozyme în următoarea selecție bibliografică. Cărți în legătură cu
ribozyme și extrase din aceasta pentru a furniza contextul de întrebuințare al acestuia în literatura Engleză.
1
Structural and Functional Studies of the Natural Hammerhead ...
4.1 Introduction The hammerhead ribozyme has been studied extensively by
various structural and biochemical methods. Until recently, all structural and
biochemical data were collected on a “minimal” hammerhead construct, which
consists ...
Jennifer Lynn Boots,
2007
2
Antisense and
Ribozyme Methodology: Laboratory Companion
3.1 Introduction The term 'ribozyme' was introduced for ribonucleic acids (RNAs)
that perform two functions: firstly, the recognition of a defined RNA motif via base-
specific interactions and, subsequently, the catalysis of the hydrolysis of a ...
3
Quantum Mechanical/molecular Mechanical Studies of ...
Chapter 6 Computational study of the hairpin ribozyme catalyzed self-cleavage
reactions 6.1 Introduction The hairpin ribozyme is a small RNA enzyme that
catalyzes the reversible, site-specific cleavage of the phosphodiester bond of the
...
4
Antisense Research and Applications
While ribozyme reactions are generally found in biological systems as
intramolecular cleavage or rearrangement reactions, they can be converted into
intermolecular reactions where a comparatively large RNA molecule (still called
the ...
Stanley T. Crooke, Bernard Lebleu,
1993
5
RNA and the Regulation of Gene Expression: A Hidden Layer of ...
ribozymes (Peace et al., 2005). There are some preliminary indications that
intracellular cis- and trans-cleavage can be dramatically improved by using
hammerhead ribozyme derivatives which include natural loop1–loop2
interactions (Hean, ...
6
Ribozymes and RNA Catalysis
However, glucose- 6-phosphate (3), which differs from GlcN6P only by the
replacement of an amine group with a hydroxyl group, also results in no ribozyme
activity. Both functional groups can serve as hydrogen bond donors, so the
chemical ...
David Malcolm James Lilley, Fritz Eckstein,
2008
7
Delivery Strategies for Antisense Oligonucleotide Therapeutics
promoters selected for regulation of ribozyme expression can often be assessed
empirically, at least in part, by transient transfection studies in cell culture. A
common approach is to examine the levels of ribozyme expression obtained by ...
8
An Alcohol Dehydrogenase
Ribozyme: Evolution, ...
3.1 Introduction In the previous chapter, we reported a ribozyme that exhibits
activity analogous to alcohol dehydrogenase (ADH)(1). The ribozyme, called
ribox02 (Figure 3.1a), was selected in vitro from a pool of random RNA
sequences in ...
Swetansu B. Pattnaik,
2007
9
Biotechnology: Academic Cell Update Edition
The mutagenesis and selection steps can be repeated over and over to improve
the ribozyme. Once an efficient ribozyme is obtained, the sequence is determined
after converting the RNA into cDNA. Artificial ribozymes have been made to ...
David P. Clark, Nanette J. Pazdernik,
2011
10
Thomas' Hematopoietic Cell Transplantation
Two ribozymes, the hammerhead ribozyme and the hairpin ribozyme, have been
extensively studied due to their small size and rapid kinetics. Their application
has been recently reviewed in several publications (reviewed in [107-110]).
E. Donnall Thomas, Karl G. Blume, Stephen J. Forman,
2004
ȘTIRI NOI CARE INCLUD TERMENUL «RIBOZYME»
Află ce ziare naționale și internaționale au scris despre și cum este întrebuințat termenul
ribozyme în contextul următoarelor știri.
Av Ann Kristin Ødegård
Det er som å gå fra tulleradio til tulleradio med musikk, sier Ribozymes Kjartan ... Kjartan Ericsson skal kombinere konserter med bergensbandet Ribozyme med ... «Bergensavisen, Mai 15»
Ribozyme: Neues Album "Grinding Tune" komplett im Stream
RIBOZYME streamen noch vor der offiziellen Veröffentlichung bei uns ihre nagelneue Scheibe "Grinding Tune". Der vierten Langspieler der Hardrocker aus ... «Rock Hard Megazine, Mai 15»
Ancient RNA enzymes formed from freeze-thaw cycles
'To the best of our knowledge this is the first time that complex ribozymes have ... The team took a powerful RNA polymerase ribozyme – a modern analogue of ... «Royal Society of Chemistry, Mai 15»
Ribozyme - Grinding Tune
Die Norweger RIBOZYME sind eine ganz schwierige Geschichte. Auf den ersten Blick wirkt ihre Musik unstimmig und kann nicht überzeugen. So war ich schnell ... «metal.de, Mai 15»
Ribozyme feiern 'Bronze'-Videopremiere
RIBOZYME enthüllen bei uns den brandneuen Clip zu ihrem Song 'Bronze'. Finden könnt ihr den Track auf dem kommenden Album "Grinding Tune", das die ... «Rock Hard Megazine, Apr 15»
Ribozyme Streaming New Single "Grinding Tune"
Bergen-based Ribozyme will release another groovy rock album in May via Indie Recordings, and the first single is out now. Check out "Timely Reminder" from ... «Metal Underground, Apr 15»
New Twist in Life's Start Could Aid Efforts to Make It from Scratch
But if a ribozyme that copies RNA can't function in a chemically symmetrical world, how could RNA-based life have emerged? “It's kind of a showstopper,” said ... «Scientific American, Dec 14»
Cross-chiral Ribozyme May Hold Clues To Origin Of Life
In a Nature commentary, Shelke and Piccirilli show how the Joyce group's cross-chiral D-ribozyme (right) can use L-RNA building blocks to construct an L copy ... «The Biological SCENE, Nov 14»
Origins of life on Earth could be explained by a new enzyme created …
Scientists have mimicked natural evolution in a test tube to come up with an enzyme that may have been crucial to the origin of life on Earth. It's called ribozyme ... «Daily Mail, Oct 14»
Ribozyme Swaps Genes With A Flip Of A Switch
In an effort to take control, researchers developed a catalytic RNA—a ribozyme— that exchanges genes only in the presence of a specific small molecule (ACS ... «The Biological SCENE, Oct 14»