heterooligosaccharide
Any oligosaccharide composed of two or more different monosaccharides

heterooligosaccharides
plural of heterooligosaccharide

heterotoxin
A toxin from an external source

heterotoxins
plural of heterotoxin

hexachitose
A hexameric oligosaccharide derived from chitin

hexacyprone
A choleretic drug.

hexalen
altretamine

hexamethylmelamine
Synonym of altretamine.

hexaminidase
Alternative form of hexosaminidase.

hexaminidases
plural of hexaminidase

hexatrione
A particular glucocorticoid hormone

hexedine
A topical anti-infective drug.

hexoaminidase
Alternative form of hexosaminidase.

hexoaminidases
plural of hexoaminidase

hexokinase
Any enzyme that catalyses the phosphorylation of a hexose

hexokinases
plural of hexokinase

hexosaminidase
Any enzyme that catalyzes the hydrolysis of terminal hexosamine residues in hexosaminides

hexosaminidases
plural of hexosaminidase

hexosyltransferase
Any glycosyltransferase that catalyzes the transfer of a hexose

hexosyltransferases
plural of hexosyltransferase

hippocalcin
A particular calcium-binding protein.

hirudin
A peptide, obtained from the salivary glands of leeches, that is used as an anticoagulant.

hirudins
plural of hirudin

histaminase
A widely occurring flavoprotein enzyme that oxidizes histamine and various diamines.

histaminases
plural of histaminase

histidinase
Histidine ammonia-lyase, an enzyme that converts histidine into ammonia and urocanic acid.

histotroph
The uterine secretions involved in histotrophy

holocarboxylase
Any enzyme that catalyses multiple carboxylation or decarboxylation reactions, especially those involving biotin

holocarboxylases
plural of holocarboxylase

holocellulase
Any enzyme that hydrolyses and breaks down holocellulose

holocellulases
plural of holocellulase

holoenzyme
A haloenzyme.

holoenzymes
plural of holoenzyme

holoflavodoxin
The holoprotein of flavodoxin

holoflavodoxins
plural of holoflavodoxin

holomyoglobin
myoglobin from which the central heme subunit has not been removed

holopeptide
A conjugated peptide

holopeptides
plural of holopeptide

holoprotein
A conjugated protein; an apoprotein combined with its prosthetic group.

holoproteins
plural of holoprotein

holotoxin
Any of various protein toxins having a structure assembled from several subunits

holotoxins
plural of holotoxin

holotoxoid
A holotoxin toxoid

holotoxoids
plural of holotoxoid

holotricin
An antimicrobial peptide present in some insects

homeodomain
A folded protein domain that binds to DNA and has a function in transcription

homeodomains
plural of homeodomain

homeoprotein
Any protein that has a homeodomain.

homeoproteins
plural of homeoprotein

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

homeotoxins
plural of homeotoxin

homoalanine
The amino acid 2-aminobutanoic acid

homoarginine
The amino acid (2S)-2-amino-6-(diaminomethylideneamino)hexanoic acid

homoarginines
plural of homoarginine

homocarnosine
The amino acid (E)-N-(4-amino-1-hydroxybutylidene)-L-histidine

homocitrulline
The amino acid (2S)-2-amino-6-(carbamoylamino)hexanoic acid that is a metabolite of ornithine.

homocysteinase
Any enzyme that catalyzes the breakdown of homocysteine

homocysteinases
plural of homocysteinase

homodomain
Misspelling of homeodomain.

homolanthionine
An amino acid consisting of two homoalanine residues connected by a single sulfur atom

homomethionine
The amino acid 3-amino-5-(methylthio)pentanoic acid (or an isomer)

homomethionines
plural of homomethionine

homomultimer
A multimeric protein consisting of two or more identical components.

homomultimers
plural of homomultimer

homopeptide
A peptide containing multiple occurrences of a single amino acid moiety

homopeptides
plural of homopeptide

homopropargylglycine
The amino acid HC≡C-CH₂-CH₂-CH(NH₂)-COOH; it is used in research into protein synthesis

homoselenocysteine
The amino acid HSeCH₂CH₂CH(NH₂)COOH

homoserine
The amino acid 2-amino-4-hydroxybutanoic acid that is an intermediate in the biosynthesis of methionine, threonine and isoleucine

homoserines
plural of homoserine

homotyrosine
The amino acid (2~{S})-2-amino-4-(4-hydroxyphenyl)butanoic acid

hondose
A low dose of hormone replacement therapy in a trans woman which produces inadequate feminization and fails to suppress testosterone.

hondoses
plural of hondose

hopene
A pentacyclic triterpene hydrocarbon produced from squalene by a cyclase enzyme.

hopenes
plural of hopene

hophead
A drug addict.
A beer enthusiast or homebrewer, with emphasis on 'hoppier' types of beer (i.e. brewed with more hops, like IPAs).

hopheads
plural of hophead

hormone
Any substance produced by one tissue and conveyed by the bloodstream to another to effect physiological activity.
A synthetic compound with the same activity.
A synthetic compound with the same activity.
Any similar substance in plants.

hormoned
simple past and past participle of hormone

hormones
Hormone replacement therapy.

hormoning
present participle and gerund of hormone

humanin
A polypeptide that has neuroprotective and cytoprotective properties.

hyaladherin
Any hyaluronan-binding protein.

hyaladherins
plural of hyaladherin

hyaluronidase
Any enzyme that catalyses the hydrolysis of hyaluronic acid

hyaluronidases
plural of hyaluronidase

hyaluronoglucosaminidase
A particular hyaluronidase enzyme.

hyaluronoglucosaminidases
plural of hyaluronoglucosaminidase

hyaluronoglucuronidase
A particular hyaluronidase enzyme.

hyaluronoglucuronidases
plural of hyaluronoglucuronidase

hycanthone
A particular schistosomicide, a metabolite of lucanthone.

hydantoinase
Any dihydropyrimidinase that hydrolyses hydantoin

hydantoinases
plural of hydantoinase

hydratase
Any enzyme that catalyzes the addition or removal of the elements of water; a hydrase

hydratases
plural of hydratase

hydrobilobol
A particular resorcinolic lipid.

hydrogenase
Any enzyme that catalyzes the reduction of a substrate by the reversible oxidation of hydrogen.

hydrogenases
plural of hydrogenase

hydrogenlyase
Any enzyme that catalyzes the removal of hydrogen from a compound, but especially one that converts formic acid into carbon dioxide and molecular hydrogen

hydrogenlyases
plural of hydrogenlyase

hydroxidanaidal
A particular male sex hormone that is the main component of the arctiid moth pheromone.

hydroxilase
Misspelling of hydroxylase.

hydroxyamfetamine
A sympathomimetic drug.

hydroxyamphetamine
Alternative form of hydroxyamfetamine.

hydroxycalciferol
a biologically active metabolite of vitamin D2 which is more active in curing rickets than its parent

hydroxychlorpromazine
A metabolite of chlorpromazine.

hydroxycinnamoyltransferase
Any enzyme that catalyses the transfer of a hydroxycinnamoyl group

hydroxycinnamoyltransferases
plural of hydroxycinnamoyltransferase

hydroxyecdysone
A sterol (a ecdysteroid hormone) that controls moulting and metamorphosis of arthropods

hydroxyecdysones
plural of hydroxyecdysone

hydroxyergocalciferol
A hydroxy metabolite of ergocalciferol.

hydroxyguanosine
A nucleoside that is an oxidative derivative of guanosine, used as a biomarker of oxidative stress.

hydroxyhexamide
A metabolite of acetohexamide.

hydroxykynurenine
A metabolite of tryptophan that filters ultraviolet light in the human lens.

hydroxykynurenines
plural of hydroxykynurenine

hydroxylase
Any of several enzymes that catalyze the oxidation of compounds by the introduction of hydroxyl groups.

hydroxylases
plural of hydroxylase

hydroxylysinohydroxynorleucine
An amino acid with two hydroxyl groups, used in collagen crosslinking.

hydroxymetabolite
A metabolite that is a hydroxy form of an initial compound

hydroxymetabolites
plural of hydroxymetabolite

hydroxymethylase
Any enzyme that catalyses a hydroxymethylation reaction

hydroxymethylases
plural of hydroxymethylase

hydroxymethyltransferase
Any transferase enzyme that transfers a hydroxymethyl group.