histidine

Protein building block

Histidine is one of the twenty amino acids that form proteins in living organisms.

It's classified as essential in humans, meaning the body cannot synthesize enough of it—dietary sources are required.

Histidine plays roles in tissue repair, immune response, and the production of histamine.

Foods high in histidine include meat, fish, and dairy.

catalysis

enzyme

Protein that hastens reactions

nucleophile · hemoglobin · myoglobin · ligand · chelation

imidazole

ring

Closed curve shape

  • aromaticPleasantly strong-smelling
  • pKaAcid dissociation metric
  • tautomerInterconverting molecular form

buffering · pH · amphoteric · titration · resonance · nitrogen · heterocyclic · basicity · acidity · charge

nutrition

essential

Fundamentally necessary

deficiency · requirement · supplementation · fortification · meat · fish · poultry · dairy · legumes · bioavailability

metabolism

decarboxylation

Carboxyl group elimination

degradation · ammonia · dipeptide · muscle

Categories
Opposites
essentiality status

histidinealanine

Basic amino acid

glycine · serine · asparagine · glutamine · proline

amino acid chemical properties

histidineglycine

Simplest amino acid

alanine · leucine · valine · isoleucine · phenylalanine

biochemical building blocks vs breakdown products

histidinehistamine

Allergy-response compound

urea · ammonia · uric acid

Family

histology, histamine, antihistamine, antihistamines

Familiarity
Top 1,000,000
Profile
Used worldwide · Timeless · Concrete · Rated G