ipratropium
An anticholinergic drug C₂₀H₃₀NO₃⁺ that is used as an inhalational aerosol for bronchodilation especially in the treatment of chronic obstructive pulmonary disease and as a nasal spray in the treatment of runny nose associated with rhinitis.

iquindamine
An antitussive drug.

irampanel
A drug that acts as a dual non-competitive antagonist of the AMPA receptor.

irinotecan
A particular drug used in chemotherapy.

irisresorcinol
A particular resorcinolic lipid.

irrinotecan
Misspelling of irinotecan.

irsogladine
An antiulcer drug.

isaglidole
An antidiabetic drug.

iseganan
A particular antimicrobial peptide

islatravir
An experimental inhibitor of nucleoside reverse transcriptase translocation

isoactin
Any isoform of an actin

isoactins
plural of isoactin

isoaminile
A drug, structurally related to methadone, with antitussive and anticholinergic effects.

isoantibodies
plural of isoantibody

isoantibody
An antibody produced by an individual against isoantigens produced by members of the same species.

isoaspartate
Any salt, ester or peptide residue derived from isoaspartic acid

isoaspartates
plural of isoaspartate

isobutamben
An anesthetic drug.

isochorisimatase
Misspelling of isochorismatase.

isochorismatase
Any enzyme that catalyses the hydrolysis of isochorismate

isochorismatases
plural of isochorismatase

isocorydine
The phenolic plant metabolite (6aS)-1,2,10-trimethoxy-6-methyl-5,6,6a,7-tetrahydro-4H-dibenzo[de,g]quinolin-11-ol

isodipeptide
Any isopeptide containing two amino acid moieties

isodipeptides
plural of isodipeptide

isofagomine
The drug afegostat.

isohemagglutinin
An antibody that agglutinates the red blood cells of others of the same species

isohemagglutinins
plural of isohemagglutinin

isoleucine
An essential amino acid, C₆H₁₃NO₂, isomeric with leucine, found in most animal proteins.

isoleucines
plural of isoleucine

isomaltitol
a disaccharide polyol derived from isomaltose

isomaltulose
A sweet-tasting disaccharide found in honey and sugar cane.

isomerase
Any enzyme which catalyzes the conversion of one isomeric form of a chemical compound to another.

isomerases
plural of isomerase

isopentenyltransferase
Any transferase that catalyses the transfer of an isopentenyl group

isopentenyltransferases
plural of isopentenyltransferase

isopepsin
Pepsin modified by exposure to a temperature of 40 to 60°C.

isopeptidase
Any enzyme that catalyzes the cleavage of an isopeptide bond, especially that between the terminal diglycine attached to ubiquitin

isopeptidases
plural of isopeptidase

isopropamide
A long-acting anticholinergic drug used in the treatment of peptic ulcers and other gastrointestinal disorders involving hyperacidity and hypermotility.

isoquinazepon
The drug clazolam.

isothipendyl
A particular antipruritic drug.

isotiquimide
An antiulcer drug.

isotopomerase
Synonym of topoisomerase.

isotoxin
A toxin from an animal that is toxic to others of the same species.

isotoxins
plural of isotoxin

isovaline
The rare amino acid 2-amino-2-methylbutanoic acid that was found in the Murchison meteorite

israpafant
An antiplatelet drug with thienotriazolodiazepine structure.

itanoxone
An antilipidemic drug.

ixabepilone
A particular drug used in chemotherapy.

ixodidin
An antimicrobial peptide present in ticks of the order Ixodida

jamadars
plural of jamadar

jararacussin
A fibrinogen-clotting enzyme in the venom of the pit viper Bothrops jararacussu

jemadars
plural of jemadar

juvenoid
A juvenile hormone analogue.

juvenoids
plural of juvenoid

juxtanodin
An oligodendroglial protein that binds actin

kaliotoxin
A neurotoxic peptide present in some scorpions

kanadaptin
A particular human nuclear protein

katanin
A heterodimeric protein which functions to sever microtubules

katsuwokinase
A particular fibrinolytic enzyme.

kebuzone
The drug ketophenylbutazone.

kemptide
A commercial protein kinase

kendrin
A calmodulin-binding protein.

keratanase
Any enzyme that catalyses the hydrolysis of a keratan sulfate

keratanases
plural of keratanase

keratin
The protein of which hair and nails are composed.

keratinase
A proteolytic proteinase enzyme produced in the presence of keratin-containing substrate.

keratinases
plural of keratinase

keratins
plural of keratin

ketoacylsynthase
Any enzyme that catalyzes the biosynthesis of a keto acid

ketoacylsynthases
plural of ketoacylsynthase

ketoaldose
Any monosaccharide which contains both an aldehyde and a ketone functional group in equilibrium with one or more hemiacetal forms.

ketoaldoses
plural of ketoaldose

ketohexokinase
Synonym of fructokinase.

ketohexokinases
plural of ketohexokinase

ketohydroxyestrin
The metabolite of oestradiol 3-hydroxyestra-1,3,5(10)-trien-17-one

ketolase
Any enzyme that cleaves carbohydratea at the ketone (carbonyl) position

ketolases
plural of ketolase

ketoreductase
Any enzyme that catalyzes the reduction of a ketone

ketoreductases
plural of ketoreductase

ketosynthase
Any enzyme that catalyzes the synthesis of ketones, but especially that catalyzes the synthesis of polyketides

ketosynthases
plural of ketosynthase

khassadars
plural of khassadar

kianse
Misspelling of kinase.

kinase
Any of a group of enzymes that transfer phosphate groups from high-energy donor molecules, such as ATP, to specific target molecules (substrates), in a process termed phosphorylation.

kinases
plural of kinase

kinectin
A particular transmembrane protein in humans.

kinectins
plural of kinectin

kinetin
A tricyclic heterocyclic plant hormone that promotes cell division

kinetine
Alternative form of kinetin.

kinetines
plural of kinetine

kinetins
plural of kinetin

kinetochore
The protein structure in eukaryotes which assembles on the centromere and links the chromosome to microtubule polymers from the mitotic spindle during mitosis.

kinetochores
plural of kinetochore

kinurenine
Misspelling of kynurenine.

klotho
A transmembrane protein, a novel β-glucuronidase, that, in addition to other effects, provides some control over the sensitivity of the organism to insulin and appears to be involved in aging.

kreatin
Archaic form of creatine.

kreatine
Alternative spelling of creatine.

kreatines
plural of kreatine

kreatins
plural of kreatin

krokodil
The drug desomorphine.

kynurenin
Alternative form of kynurenine.

kynurenine
A metabolite, 2-amino-4-(2-aminophenyl)- 4-oxo-butanoic acid, that is an intermediate in the conversion of tryptophan to niacin.

kynurenines
plural of kynurenine

kynurenins
plural of kynurenin

laccase
Any of several copper-containing oxidase enzymes found in plants and microorganisms.

laccases
plural of laccase

lactadherin
A secreted protein found in vertebrates; it may function as a cell adhesion protein to connect smooth muscle to elastic fibre in arteries.

lactagogue
A substance which induces lactation; a galactagogue.

lactagogues
plural of lactagogue

lactalbumin
The albumin content of milk.

lactalbumins
plural of lactalbumin

lactin
lactose

lactoadherin
Alternative form of lactadherin.

lactoalbumin
Alternative form of lactalbumin.

lactoalbumins
plural of lactoalbumin

lactodifucotetraose
An oligosaccharide composed of lactose with two added fucose moieties

lactoferrampin
An antimicrobial peptide related to lactoferrin

lactoferrin
A globular multifunctional protein with antimicrobial activity, found in milk and many mucosal secretions such as tears and saliva

lactoferrins
plural of lactoferrin

lactogen
A polypeptide placental hormone, part of the somatotropin family, with structure and function similar to those of growth hormone. It modifies the metabolic state of the mother during pregnancy to facilitate the energy supply of the fetus.

lactogens
plural of lactogen

lactoproteid
Dated form of lactoprotein.

lactoproteids
plural of lactoproteid

lactoprotein
Any protein (such as casein) present in milk

lactoproteins
plural of lactoprotein