Catalytic RNA definition of Catalytic RNA in the Free Online Encyclopedia.

ribozyme [′rīb·ə‚zīm]

(biochemistry)

A ribonucleic acid molecule that can catalyze, or lower the activation energy for, specific biochemical reactions.

Ribozyme

A ribonucleic acid (RNA) molecule that, like a protein, can catalyze specific biochemical reactions. Examples include self-splicing rRNA and RNase P, both involved in catalyzing RNA processing reactions (that is, the biochemical reactions that convert a newly synthesized RNA molecule to its mature form). Different ribozyme structures catalyze quite distinct RNA processing reactions, just as protein enzyme families that are composed of different structures catalyze different types of biochemical reactions.

Ribozymes share many similarities with protein enzymes, as assessed by two parameters that are used to describe a biological catalyst. The Michaelis-Menten constant K_m relates to the affinity that the catalyst has for its substrate, and ribozymes possess K_m values which are comparable to K_m values of protein enzymes. The catalytic rate constant describes how efficiently a catalyst converts substrate into product. The values of this constant for ribozymes are markedly lower than those values observed for protein enzymes. Nevertheless, ribozymes accelerate the rate of chemical reaction with specific substrates by 10¹¹ compared with the rate observed for the corresponding uncatalyzed, spontaneous reaction. Therefore, ribozymes and protein enzymes are capable of lowering to similar extents the activation energy for chemical reaction. See Enzyme, Protein, Ribonucleic acid (RNA)

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No references found	00 Hardcover QP801 The 14 papers, revised to incorporate audience interaction, explore the folding pathways and mechanisms by which constituent residues interact to yield native catalytic RNA molecules and functional proteins, and how ribosomes and other macromolecular complexes self- assemble. Folding and Self-assembly of Biological Macromolecules: Proceedings by SciTech Book News A technique known as in vitro selection has been used in the isolation of numerous artificial catalytic RNA molecules in various research laboratories. Cellular, Molecular and Developmental Biology by Journal of the Mississippi Academy of Sciences Hammerhead ribozymes are small catalytic RNAs that cleave single stranded RNA substrates at specific nucleotide sequences. The cloning of hammerhead ribozymes for analysis as anti-HIV-1 gene ... by Shoup, Margaret E.; Jackson, William H. / Bulletin of the South Carolina Academy of Science	catalog catalog number catalog-order device cataloged procedure catalogue Catalonia Catalonian Mountains Catalpa Catalysis catalyst catalyst carrier Catalyst Poisons catalyst selectivity catalyst stripping Catalysts Catalysts, Biological catalytic activity catalytic antibody catalytic converter catalytic cracker catalytic cracking catalytic cracking unit catalytic hydrogenation catalytic polymerization catalytic reforming Catalytic RNA catalytic site catalytically cracked gasoline catalytically-blown asphalt Catamaran Catamarca Catamnesis catamount Catanduanes Catania Catanzaro cataphoresis Cataphylaxis catapleiite cataplexy Catapochrotidae Catapult Cataract cataracting Catargiu, Lascar catarobic Catarrh Catarrh of the Respiratory Tract catarrhal conjunctivitis Catarrhal Fever of Sheep catarrhal jaundice	catalytic cracker catalytic cracker Catalytic cracking Catalytic Cracking Unit Catalytic Cracking Unit Catalytic Dense Membrane Reactor Catalytic depolymerization Catalytic depolymerization Catalytic depolymerization Catalytic Distillation Catalytic domain Catalytic domain Catalytic domain Catalytic Enhanced Plastic Decontamination Catalytic Extraction Processing Catalytic force catalytic hydrogenation Catalytic Hydrothermal Gasification Catalytic Investment Strategy Catalytic Nitric Oxide Synthase Catalytic Oxidation Catalytic Partial Oxidation Catalytic Partial Oxidation of Methane catalytic polymerization Catalytic Process Engineering Catalytic Products International, Inc. Catalytic Reactor Catalytic reformer Catalytic reforming Catalytic Research Unit Catalytic RNA Catalytic site Catalytic site Catalytic site Catalytic Solutions, Inc. Catalytic species Catalytic species Catalytic species catalytic subunit of protein kinase A Catalytic subunit of Protein Phosphatase 1 Catalytic subunit of Protein Phosphatase 2A Catalytic Surface Effects Catalytic Transfer Hydrogenation Catalytic turnover number catalytic war Catalytic Wet Air Oxidation Catalytic Wet Chemical Oxidation Catalytic Wet Peroxide Oxidation catalytic wet-oxidation process Catalytica Energy Systems Inc catalytically catalytically cracked gasoline catalytically-blown asphalt catalyze catalyze catalyze catalyzed catalyzed catalyzed Catalyzed Diesel Particulate Filter Catalyzed Electrochemical Plutonium Oxide Dissolution/Dissolver

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00 Hardcover QP801 The 14 papers, revised to incorporate audience interaction, explore the folding pathways and mechanisms by which constituent residues interact to yield native catalytic RNA molecules and functional proteins, and how ribosomes and other macromolecular complexes self- assemble.

Folding and Self-assembly of Biological Macromolecules: Proceedings by SciTech Book News

A technique known as in vitro selection has been used in the isolation of numerous artificial catalytic RNA molecules in various research laboratories.

Cellular, Molecular and Developmental Biology by Journal of the Mississippi Academy of Sciences

Hammerhead ribozymes are small catalytic RNAs that cleave single stranded RNA substrates at specific nucleotide sequences.

The cloning of hammerhead ribozymes for analysis as anti-HIV-1 gene ... by Shoup, Margaret E.; Jackson, William H. / Bulletin of the South Carolina Academy of Science

catalytic cracker
catalytic cracker
Catalytic cracking
Catalytic Cracking Unit
Catalytic Cracking Unit
Catalytic Dense Membrane Reactor
Catalytic depolymerization
Catalytic depolymerization
Catalytic depolymerization
Catalytic Distillation
Catalytic domain
Catalytic domain
Catalytic domain
Catalytic Enhanced Plastic Decontamination
Catalytic Extraction Processing
Catalytic force
catalytic hydrogenation
Catalytic Hydrothermal Gasification
Catalytic Investment Strategy
Catalytic Nitric Oxide Synthase
Catalytic Oxidation
Catalytic Partial Oxidation
Catalytic Partial Oxidation of Methane
catalytic polymerization
Catalytic Process Engineering
Catalytic Products International, Inc.
Catalytic Reactor
Catalytic reformer
Catalytic reforming
Catalytic Research Unit

Catalytic RNA

Catalytic site
Catalytic site
Catalytic site
Catalytic Solutions, Inc.
Catalytic species
Catalytic species
Catalytic species
catalytic subunit of protein kinase A
Catalytic subunit of Protein Phosphatase 1
Catalytic subunit of Protein Phosphatase 2A
Catalytic Surface Effects
Catalytic Transfer Hydrogenation
Catalytic turnover number
catalytic war
Catalytic Wet Air Oxidation
Catalytic Wet Chemical Oxidation
Catalytic Wet Peroxide Oxidation
catalytic wet-oxidation process
Catalytica Energy Systems Inc
catalytically
catalytically cracked gasoline
catalytically-blown asphalt
catalyze
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Catalyzed Diesel Particulate Filter
Catalyzed Electrochemical Plutonium Oxide Dissolution/Dissolver

ribozyme (redirected from Catalytic RNA)

ribozyme
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