Search results
Results from the WOW.Com Content Network
In biochemistry, denaturation is a process in which proteins or nucleic acids lose folded structure present in their native state due to various factors, including application of some external stress or compound, such as a strong acid or base, a concentrated inorganic salt, an organic solvent (e.g., alcohol or chloroform), agitation and radiation, or heat. [3]
An enzyme's activity decreases markedly outside its optimal temperature and pH, and many enzymes are (permanently) denatured when exposed to excessive heat, losing their structure and catalytic properties. Some enzymes are used commercially, for example, in the synthesis of antibiotics.
In the Histidine variant, the enzyme is much more effective at the aforementioned conversion. [7] The enzyme responsible for the conversion of acetaldehyde to acetate, however, remains unaffected, which leads to differential rates of substrate catalysis and causes a buildup of toxic acetaldehyde, causing cell damage. [7]
Superoxide is known to denature enzymes, oxidize lipids, and fragment DNA. [21] SODs catalyze the production of O 2 and H 2 O 2 from superoxide (O − 2), which results in less harmful reactants. When acclimating to increased levels of oxidative stress, SOD concentrations typically increase with the degree of stress conditions.
1791 21673 Ensembl ENSG00000107447 ENSMUSG00000025014 UniProt P04053 P09838 RefSeq (mRNA) NM_001017520 NM_004088 NM_001043228 NM_009345 RefSeq (protein) NP_001017520 NP_004079 NP_001036693 NP_033371 Location (UCSC) Chr 10: 96.3 – 96.34 Mb Chr 19: 41.02 – 41.05 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Terminal deoxynucleotidyl transferase (TdT), also known as DNA ...
Ribonuclease (commonly abbreviated RNase) is a type of nuclease that catalyzes the degradation of RNA into smaller components. Ribonucleases can be divided into endoribonucleases and exoribonucleases, and comprise several sub-classes within the EC 2.7 (for the phosphorolytic enzymes) and 3.1 (for the hydrolytic enzymes) classes of enzymes.
Oxidoreductases, enzymes that catalyze oxidation-reduction reactions, constitute Class EC 1 of the IUBMB classification of enzyme-catalyzed reactions. [2] Any of these may be called dehydrogenases, especially those in which NAD + is the electron acceptor (oxidant), but reductase is also used when the physiological emphasis on reduction of the substrate, and oxidase is used only when O 2 is the ...
Ribonucleotide reductase (RNR), also known as ribonucleoside diphosphate reductase, is an enzyme that catalyzes the formation of deoxyribonucleotides from ribonucleotides. [1] [2] It catalyzes this formation by removing the 2'-hydroxyl group of the ribose ring of nucleoside diphosphates (or triphosphates depending on the class of RNR).