histidine

American  

[his-ti-deen, -din] / ˈhɪs tɪˌdin, -dɪn /

Also histidin

noun

Biochemistry.

1. an essential amino acid, C 3 H 3 N 2 CH 2 CH(NH2 )COOH, that is a constituent of proteins and is important as the iron-binding site in hemoglobin. His; H

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histidine British  

/ ˈhɪstɪˌdiːn, -dɪn /

noun

1. a nonessential amino acid that occurs in most proteins: a precursor of histamine

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histidine Scientific  

/ hĭs′tĭ-dēn′ /

1. An amino acid that is essential for children but not for adults. Chemical formula: C ₆ H ₉ N ₃ O ₂ .

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Etymology

Origin of histidine

First recorded in 1895–1900; hist- + -id ³ + -ine ²

Example Sentences

ATP is the central energy carrier of the cell which supports numerous molecular processes, while, histidine is the most common amino acid found in the active site of enzymes, and maintains their acid-base chemistry.

From Science Daily • Apr. 18, 2024

The felines showed a particular preference for bowls containing histidine and inosine monophosphate—compounds found at particularly high levels in tuna.

From Science Magazine • Aug. 25, 2023

The sequencing data revealed a variant that substituted an amino acid called histidine for arginine.

From Scientific American • Jul. 26, 2021

And a molecule of histidine contains only so many suitable atoms.

From Economist • Feb. 23, 2012

Nothing is known, however, of the process by which the more complicated closed-ring amino-acid compounds, such as proline, histidine, or tryptophane, are synthetized.

From The Chemistry of Plant Life by Thatcher, Roscoe Wilfred