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Unit of catalytic activity
The enzyme unit or international unit (symbol U or IU) is a unit measuring an enzyme's catalytic activity. An enzyme unit is defined as the amount of
Enzyme_unit
Laboratory method for measuring enzymatic activity
concentration of an enzyme can be expressed in molar amounts, as with any other chemical, or in terms of activity in enzyme units. Enzyme activity is a measure
Enzyme_assay
Topics referred to by the same term
Enzyme unit, a measurement of active enzyme in a sample International unit, a unit of measurement for nutrients and drugs Unit number, the number 1 Unit, identity
Unit
Large biological molecule that acts as a catalyst
An enzyme is a biological macromolecule, usually a protein, that acts as a biological catalyst, accelerating chemical reactions without being consumed
Enzyme
SI derived unit of catalytic activity
katal (symbol: kat) is a unit of the International System of Units (SI) used for quantifying the catalytic activity of enzymes (that is, measuring the
Katal
Twenty-first letter of the Latin alphabet
system. 'u' is the symbol for the unified atomic mass unit, and 'U' is the symbol for one enzyme unit. In the International Phonetic Alphabet, the close
U
Topics referred to by the same term
thermodynamics U, units, any of various standard units of biological activity, such as insulin units, enzyme units, or penicillin units U, the enzyme unit International
U_(disambiguation)
Biological catalysts used in production
biocatalysis through isolated enzymes is considered more economical than use of whole cells. Enzymes may be used as a unit operation within a process to
Industrial_enzymes
Process of increasing the rate of a chemical reaction
time unit. The biochemical equivalent is the enzyme unit. For more information on the efficiency of enzymatic catalysis, see the article on enzymes. In
Catalysis
Unit of measurement for enzyme cellulase
A cellulase unit (CU) is a unit of measurement for the enzyme cellulase. One cellulase unit is that activity that will produce a relative fluidity change
Cellulase_unit
Protease commonly found in natto
Nattokinase (pronounced nah-TOH-kin-ayss) is an enzyme originally extracted from a Japanese food called nattō. Nattō is produced by fermentation by adding
Nattokinase
Unit used to measure diastatic power
One can convert this definition to the number of international enzyme units (IU, enzyme activity that produces 1 μmole of product per minute) per gram
Degree_Lintner
Mammalian protein involved in glycogen production
enzyme, also known as brancher enzyme or glycogen-branching enzyme is an enzyme that in humans is encoded by the GBE1 gene. Glycogen branching enzyme
Glycogen_branching_enzyme
In chemistry, number related to catalysis
active site will execute for a given enzyme concentration [ET] for enzymes with two or more active sites. For enzymes with a single active site, kcat is
Turnover_number
Inactive precursor to an enzyme
can be a peptide unit, or can be independently-folding domains comprising more than 100 residues. Although they limit the enzyme's ability, these N-terminal
Zymogen
Class of enzymes
species, 5, 10 or 60 copies of the enzyme bind together to form homomers. In the case of 60 copies, the enzyme units form a icosahedral hollow cage. In
Lumazine_synthase
Enzymes that catalyze cellulolysis
4; systematic name 4-β-D-glucan 4-glucanohydrolase) is any of several enzymes produced chiefly by fungi, bacteria, and protozoans that catalyze cellulolysis
Cellulase
Proposed alternative scenarios related to abiogenesis
compatible with self-organization on a metal sulfide surface. Its key enzyme unit, carbon monoxide dehydrogenase/acetyl-CoA synthase, contains mixed nickel-iron-sulfur
Alternative abiogenesis scenarios
Alternative_abiogenesis_scenarios
Non-protein chemical compound or metallic ion
tightly bound, nonpolypeptide unit in a protein that is regenerated in each enzymatic turnover. Some enzymes or enzyme complexes require several cofactors
Cofactor_(biochemistry)
Class of enzymes
substrates of this enzyme characterised from peanut are one unit of coumaroyl-CoA and three units of malonyl-CoA. These combine to form one unit of resveratrol
Trihydroxystilbene_synthase
Synthesizing units (SUs) are generalized enzymes that follow the rules of classic enzyme kinetics with two modifications: product formation is not taken
Synthesizing_unit
Class of enzymes
This enzyme catalyses the inversion of the final pyrrole unit (ring D) of the linear tetrapyrrole molecule, linking it to the first pyrrole unit (ring
Uroporphyrinogen_III_synthase
Unit of measurement
brewer Paul Kolbach. It is a common unit in beer brewing (especially in Europe) that measures the ability of enzymes in malt to reduce starch to sugar (maltose)
Windisch–Kolbach_unit
biochemistry, a cross-linked enzyme aggregate is an immobilized enzyme prepared via cross-linking of the physical enzyme aggregates with a difunctional
Cross-linked_enzyme_aggregate
Polysaccharides found in animal tissue
repeating disaccharide units of →4)GlcAβ(1→3)GlcNAcβ(1→ and has a very high molecular mass, ranging from 105 to 107 Da. Each HAS enzyme is capable of transglycosylation
Glycosaminoglycan
Protein-coding gene in the species Homo sapiens
polypeptide made up of four different domains which make for a multi enzyme unit: Glutaminase (GLN), carbamoyl phosphate synthetase (CPS II), Dihydroorotase
CAD_protein
Biomolecule consisting of chains of amino acid residues
without the enzyme, 18 milliseconds with the enzyme). The molecules bound and acted upon by enzymes are called substrates. Although enzymes can consist
Protein
Structural unit of an oligomeric protein
introduced by Chetverin to make nomenclature in the Na/K-ATPase enzyme unambiguous. This enzyme is composed of two subunits: a large, catalytic α subunit,
Protomer
Class of enzymes
(GAR Tfase), is an enzyme with systematic name 10-formyltetrahydrofolate:5'-phosphoribosylglycinamide N-formyltransferase. This enzyme catalyses the following
Phosphoribosylglycinamide formyltransferase
Phosphoribosylglycinamide_formyltransferase
An endotransglucosylase is an enzyme which is able to transfer a saccharide unit from one saccharide to another. Daniel J. Cosgrove (November 2005). "Growth
Endotransglucosylase
beta. Together, the alpha and beta units are arranged in an α6β6 structure. The catalytic activities of this enzyme complex involves a coordination system
Fatty-acyl-CoA_synthase
Topics referred to by the same term
unit pwd, in computing, a Unix command Phosphoglucan, water dikinase, a phosphorus transferase enzyme Wilson disease protein, a P-type ATPase enzyme Plymouth
PWD
Class of enzymes
2-deoxystreptamine UDP 2'-N-acetylparomamine The enzyme transfers an N-acetylglucosamine sugar unit to one of the hydroxy groups of the aminoglycoside
2-Deoxystreptamine N-acetyl-D-glucosaminyltransferase
2-Deoxystreptamine_N-acetyl-D-glucosaminyltransferase
Topics referred to by the same term
endocrine system Tyrosine hydroxylase, an enzyme Thomson (unit) (Th) in mass spectrometry Thermie (th), metric unit of heat energy equal to 1,000 kilocalories
TH
Topics referred to by the same term
synthase (deacetylating), an enzyme Precorrin-6A reductase, an enzyme Kintetsu 6A series, a Japanese electric multiple unit train type U.S. Route 6A Aviacsa
6A_(disambiguation)
Enzyme
hydroxylase, is a member of the class of enzymes known as alpha-ketoglutarate-dependent hydroxylases. These enzymes catalyze the incorporation of oxygen into
Procollagen-proline dioxygenase
Procollagen-proline_dioxygenase
Enzymes from the stomachs of ruminants, used in cheese production
(/ˈrɛnɪt/) is a complex set of enzymes produced in the stomachs of ruminant mammals. Its key component is chymosin, a protease enzyme that curdles the casein
Rennet
Proton-Translocating NAD(P)+ Transhydrogenase (E.C. 7.1.1.1) is an enzyme in that catalyzes the translocation of hydrons that are connected to the redox
Proton-Translocating NAD(P)+ Transhydrogenase
Proton-Translocating_NAD(P)+_Transhydrogenase
Class of enzymes
an UDP-N-acetylglucosamine—lysosomal-enzyme N-acetylglucosaminephosphotransferase (EC 2.7.8.17) is an enzyme that catalyzes the chemical reaction
UDP-N-acetylglucosamine—lysosomal-enzyme N-acetylglucosaminephosphotransferase
UDP-N-acetylglucosamine—lysosomal-enzyme_N-acetylglucosaminephosphotransferase
Class of enzymes
acting in concert, either as structurally independent enzymes or in a bifunctional CODH/ACS unit, the two catalytic sites are key to carbon fixation in
Carbon_monoxide_dehydrogenase
Class of enzymes
(EC 2.4.1.139) is an enzyme that catalyzes the chemical reaction which combines two units of α-D-glucose 1-phosphate to form one unit of maltose. The phosphate
Maltose_synthase
unit of glutamine and one 2-oxoglutarate into two units of product, using reduced nicotinamide adenine dinucleotide (NADH) as cofactor. This enzyme belongs
Glutamate_synthase_(NADH)
Enzyme
reductase. This enzyme participates in 3 metabolic pathways: nucleotide sugars metabolism, streptomycin biosynthesis, and polyketide sugar unit biosynthesis
DTDP-4-dehydrorhamnose reductase
DTDP-4-dehydrorhamnose_reductase
Set of chemical reactions in organisms
smaller units before they can be used in cell metabolism. Different classes of enzymes are used to digest these polymers. These digestive enzymes include
Metabolism
Topics referred to by the same term
of administrating some medications and vaccines Integrase, a retroviral enzyme the "is an element of" operator ∈, denoting that an expression is an element
In
Chemical compound
isoleucyl-adenylate (Ile-AMS). The unique 9-hydroxynonanoic acid "tail" wraps around the enzyme and further stabilizes the complex, keeping the catalytic part stuck. Mupirocin
Mupirocin
Country in North America
from the original on December 9, 2023. Fruton, Joseph (1999). Proteins, Enzymes, Genes: The Interplay of Chemistry and Biology. Yale University Press.
Canada
Medication used to treat hypertension and heart failure
Lisinopril is a medication belonging to the drug class of angiotensin-converting enzyme (ACE) inhibitors and is used to treat hypertension (high blood pressure)
Lisinopril
Group of antibiotics derived from fungi
produced specific enzymes that can break down penicillin molecules, thus making them resistant to the antibiotic. They named the enzyme penicillinase. Penicillinase
Penicillin
Topics referred to by the same term
voice Air Defence Systems Division, Singapore Air Force unit based at Chong Pang Camp PDE8B, enzyme also known as ADSD This disambiguation page lists articles
ADSD
Enzyme that cleaves other proteins into smaller peptides
A protease (also called a peptidase, proteinase, or proteolytic enzyme) is an enzyme that catalyzes proteolysis, breaking down proteins into smaller polypeptides
Protease
Enzyme
In enzymology, 3-hydroxybutyrate dehydrogenase (EC 1.1.1.30) is an enzyme that catalyzes the chemical reaction: (R)-3-Hydroxybutyric acid + NAD+
3-Hydroxybutyrate dehydrogenase
3-Hydroxybutyrate_dehydrogenase
Group of dehydrogenase enzymes
Alcohol dehydrogenases (ADH) (EC 1.1.1.1) are a group of dehydrogenase enzymes that occur in many organisms and facilitate the interconversion between
Alcohol_dehydrogenase
Chemical compound
sucrase-isomaltase enzyme in humans causes sucrose intolerance, but complete maltose intolerance is extremely rare because there are four different maltase enzymes. Maltose
Maltose
Class of enzymes
The enzyme combines one unit of N-methylanthraniloyl-CoA with three of malonyl-CoA to produce one unit of 1,3-dihydroxy-N-methylacridone. Four units of
Acridone_synthase
1.151) is an enzyme that catalyzes a chemical reaction which takes one unit of 3-hydroxybenzoyl-CoA and combines this with three units of malonyl-CoA
Benzophenone_synthase
Chemical compound
stored as glycogen in the liver and muscles, the enzyme UDP-glucose pyrophosphorylase forms a UDP-glucose unit by combining glucose 1-phosphate with uridine
Uridine_diphosphate
Topics referred to by the same term
linked to the X chromosome Alcoholic liver disease Aldolase or ALD, an enzyme occurring naturally in animals Assistive listening device used to improve
ALD
Basic unit of taxonomic classification, below genus
karyotypes (sets of chromosomes) and allozymes (enzyme variants). An evolutionarily significant unit (ESU) or "wildlife species" is a population of organisms
Species
Topics referred to by the same term
Aerobactin synthase, an enzyme Israel Inter-University Computation Center Information Unit for Climate Change, a former unit of the United Nations Environment
IUCC
Enzyme
nickel-containing enzyme involved in the metabolic processes of cells. Together with carbon monoxide dehydrogenase (CODH), it forms the bifunctional enzyme Acetyl-CoA
CO-methylating acetyl-CoA synthase
CO-methylating_acetyl-CoA_synthase
Class of enzymes
(1→)–linked D-GalA residues from homogalacturonan chains. The enzyme requires a non-esterified D-GalA unit at subsites −2, −1, and + 1 and is tolerant for xylose
Pectinase
Enzymes produced by fungi and secreted outside their cells
complex macromolecules into smaller units to be taken up by the cell for growth and assimilation. These enzymes degrade complex organic matter such as
Fungal extracellular enzyme activity
Fungal_extracellular_enzyme_activity
Topics referred to by the same term
function, in mathematics Striatal-enriched protein tyrosine phosphatase, an enzyme Serial transverse enteroplasty, a surgical procedure Spherical Tokamak for
Step
catalyses two related chemical reactions in which an prenyl unit is added to a phenyl ring. The enzyme uses dimethylallyl pyrophosphate to provide the five-carbon
Trihydroxypterocarpan dimethylallyltransferase
Trihydroxypterocarpan_dimethylallyltransferase
associate professor of Early Medieval History at Durham University 1 June 2017 Enzymes Nigel Richards, Professor of Biological Chemistry at Cardiff University
List of In Our Time programmes
List_of_In_Our_Time_programmes
Class of enzymes
In enzymology, retinol dehydrogenase (RDH) (EC 1.1.1.105) is an enzyme that catalyzes the chemical reaction: all-trans retinol + NAD+ H+ H+ retinal
Retinol_dehydrogenase
Primary enzyme complex involved in prokaryotic DNA replication
DNA polymerase III holoenzyme is the primary enzyme complex involved in prokaryotic DNA replication. It was discovered by Thomas Kornberg (son of Arthur
DNA_polymerase_III_holoenzyme
Structural unit of a protein complex
subunit, regulation is accomplished by factors outside the protein. An enzyme composed of both regulatory and catalytic subunits when assembled is often
Protein_subunit
Class of enzymes
an enzyme that catalyzes the synthesis of the polyketide, isoliquiritigenin, from one unit of coumaroyl-CoA and three of malonyl-CoA. The enzyme requires
6'-Deoxychalcone_synthase
Enzyme inhibition
inhibition is a type of enzyme inhibition where the inhibitor reduces the activity of the enzyme and binds equally well to the enzyme regardless of whether
Non-competitive_inhibition
Protein family
Deubiquitinating enzymes (DUBs), also known as deubiquitinating peptidases, deubiquitinating isopeptidases, deubiquitinases, ubiquitin proteases, ubiquitin
Deubiquitinating_enzyme
Class of oily organic compounds found in plants
(GGPP). In both MVA and MEP pathways, IPP is isomerized to DMAPP by the enzyme isopentenyl pyrophosphate isomerase. IPP and DMAPP condense to give geranyl
Terpene
Class of enzymes
naringenin-chalcone synthase (CHS) is an enzyme ubiquitous to higher plants and belongs to a family of polyketide synthase enzymes (PKS) known as type III PKS. Type
Chalcone_synthase
Spicy fermented Korean condiment
from the starch of cooked glutinous rice, cultured with saccharifying enzymes during the fermentation process. Traditionally, it would be naturally fermented
Gochujang
Rare, severe disease of lysosomal storage
hexosaminidase enzyme known as hexosaminidase A. It is inherited in an autosomal recessive manner. The mutation disrupts the activity of the enzyme, which results
Tay–Sachs_disease
Genetics behind dog coat
eumelanin pigment produced, making it either black or brown. TYRP1 is an enzyme involved in the synthesis of eumelanin. Each of the known mutations appears
Dog_coat_genetics
Enzyme in a chemical reaction
2.3.1.90) is an enzyme that catalyzes the chemical reaction 2 Glucogallin 1,6-Digalloylglucose + D-glucose The enzyme has one substrate
Beta-glucogallin O-galloyltransferase
Beta-glucogallin_O-galloyltransferase
President of the United States from 1961 to 1963
combination included hormones, animal organ cells, steroids, vitamins, enzymes, and amphetamines, and possible side effects included hyperactivity, hypertension
John_F._Kennedy
Class of enzymes
1.23) is an enzyme characterised from Euglena gracilis that catalyzes a chemical reaction which transfers a propylamine three-carbon unit from S-adenosylmethioninamine
Sym-norspermidine_synthase
Earth's most severe extinction event
large amounts of nickel, a scarce metal that serves as a cofactor for enzymes involved in methane production. Chemostratigraphic analysis of Permian-Triassic
Permian–Triassic extinction event
Permian–Triassic_extinction_event
Pharmaceutical drug
containing 200 or 400 units per vial. The specific activity of highly purified human enzyme is 890,000 units/mg, meanwhile the enzyme activity produced by
Imiglucerase
Class of enzymes
degrading enzyme, beta-Asp-Arg hydrolysing enzyme, CGPase, CphB, CphE, cyanophycin granule polypeptidase, extracellular CGPase) is an enzyme. It catalyses
Cyanophycinase
Class of enzymes
4.2.25) is an enzyme that catalyzes the chemical reaction apigetrin + UDP-apiose UDP apiin The two substrates of this enzyme are the flavone
Flavone_apiosyltransferase
Class of enzymes
one most commonly used. Modrich-Lehman unit - this is rarely used, and one unit is defined as the amount of enzyme required to convert 100 nmoles of d(A-T)n
DNA_ligase
Type of disposable battery
the glucose unit of maltodextrin. The oxidation of the organic compound produces carbon dioxide and electrical current. 13 types of enzymes are planted
Sugar_battery
Chemical compound
of bilirubin reduction. It is formed in the intestines by the bacterial enzyme bilirubin reductase. About half of the urobilinogen formed is reabsorbed
Urobilinogen
Warm-blooded animals with wings and feathers
Ortiz Pineda, J; Soberon, G (1965). "The regulation of urea-biosynthesis enzymes in vertebrates". Biochemical Journal. 96 (1): 28–35. doi:10.1042/bj0960028
Bird
Protein that contains a metal ion cofactor
involved in the mitochondrial electron transport chain. Cytochrome P450 enzymes perform the function of inserting an oxygen atom into a C−H bond, an oxidation
Metalloprotein
Model of enzyme kinetics
substrate concentration for a given enzyme concentration. The Michaelis constant K m {\displaystyle K_{\mathrm {m} }} has units of concentration, and for a given
Michaelis–Menten_kinetics
Progressive neurodegenerative disease
mitochondria in the cells of Alzheimer's-affected brains, and it inhibits certain enzyme functions and the utilisation of glucose by neurons. Evidence supports Aβ
Alzheimer's_disease
Topics referred to by the same term
Pasukan Gerakan Khas, a Malaysian police special operations unit Phosphoglycerate kinase, an enzyme XM1156 Precision Guidance Kit, a U.S. Army program for
PGK
values. Lipid biosynthesis is biochemically complex, involving multiple enzyme-dependent steps that can lead to isotope fractionations. There are three
Hydrogen isotope biogeochemistry
Hydrogen_isotope_biogeochemistry
Enzyme found in humans
enzyme (IDE) (also known as insulinase, insulin protease, or insulysin) is a large zinc-binding protease of the M16 metalloprotease family of enzymes
Insulin-degrading_enzyme
Application of engineering principles to biological molecules
diagnostics. The thermodynamics and kinetics of molecular recognition in enzymes, antibodies, DNA hybridization, bio-conjugation/bio-immobilization and
Biomolecular_engineering
Enzyme
pullulan-6-glucanohydrolase (Debranching enzyme). Its substrate, pullulan, is regarded as a chain of maltotriose units linked by α-1,6-glycosidic bonds. Pullulanase
Pullulanase
cofactors in a cofactor site in order to activate a glucan phosphorylase enzyme. This enzyme causes a reaction that transfers a glucosyl portion between orthophosphate
Alpha_glucan
Clade of reptiles
Ortiz Pineda, J.; Soberon, G. (1965). "The Regulation of Urea-Biosynthesis Enzymes in Vertebrates". Biochemical Journal. 96 (1): 28–35. doi:10.1042/bj0960028
Dinosaur
Topics referred to by the same term
predetermined manner the performance of an electric motor. Milk clotting units, a measure of enzyme activity Mitochondrial calcium uniporter, a calcium channel in
MCU_(disambiguation)
Enzyme
is an enzyme with systematic name geranylgeranyl-diphosphate:isopentenyl-diphosphate transtransferase (adding 1 isopentenyl unit). This enzyme catalyses
Geranylfarnesyl diphosphate synthase
Geranylfarnesyl_diphosphate_synthase
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