Gene Targets > L-leucine transmembrane transporter activity
Page last updated: 2024-10-24

L-leucine transmembrane transporter activity

Definition

Target type: molecularfunction

Enables the transfer of L-leucine from one side of a membrane to the other. L-leucine is 2-amino-4-methylpentanoic acid. [GOC:ai, GOC:mtg_transport, ISBN:0815340729]

L-leucine transmembrane transporter activity refers to the ability of a protein to facilitate the movement of the branched-chain amino acid L-leucine across a cell membrane. This process is essential for various cellular functions, including protein synthesis, energy production, and regulation of cell signaling pathways. L-leucine transmembrane transporters are integral membrane proteins that possess specific binding sites for L-leucine. These binding sites exhibit high affinity for L-leucine, ensuring efficient uptake. The transport mechanism can be either active or passive, depending on the transporter and the concentration gradient of L-leucine across the membrane. In active transport, energy is required to move L-leucine against its concentration gradient, while passive transport relies on the concentration gradient to drive the movement. L-leucine transmembrane transporter activity plays a critical role in various physiological processes. For example, in muscle cells, it ensures adequate supply of L-leucine for protein synthesis and energy production. In the brain, L-leucine transport is crucial for neurotransmitter synthesis and neuronal function. Mutations or dysregulation of L-leucine transmembrane transporter activity can lead to various disorders, such as branched-chain amino acid metabolism defects and neurodevelopmental disorders. Understanding the molecular function of these transporters is essential for developing therapeutic strategies for these conditions.'
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Proteins (1)

ProteinDefinitionTaxonomy
Large neutral amino acids transporter small subunit 1A large neutral amino acids transporter small subunit 1 that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q01650]Homo sapiens (human)

Compounds (19)

CompoundDefinitionClassesRoles
glycinealpha-amino acid;
amino acid zwitterion;
proteinogenic amino acid;
serine family amino acid		EC 2.1.2.1 (glycine hydroxymethyltransferase) inhibitor;
fundamental metabolite;
hepatoprotective agent;
micronutrient;
neurotransmitter;
NMDA receptor agonist;
nutraceutical
levodopaL-dopa : An optically active form of dopa having L-configuration. Used to treat the stiffness, tremors, spasms, and poor muscle control of Parkinson's disease

Levodopa: The naturally occurring form of DIHYDROXYPHENYLALANINE and the immediate precursor of DOPAMINE. Unlike dopamine itself, it can be taken orally and crosses the blood-brain barrier. It is rapidly taken up by dopaminergic neurons and converted to DOPAMINE. It is used for the treatment of PARKINSONIAN DISORDERS and is usually given with agents that inhibit its conversion to dopamine outside of the central nervous system.		amino acid zwitterion;
dopa;
L-tyrosine derivative;
non-proteinogenic L-alpha-amino acid		allelochemical;
antidyskinesia agent;
antiparkinson drug;
dopaminergic agent;
hapten;
human metabolite;
mouse metabolite;
neurotoxin;
plant growth retardant;
plant metabolite;
prodrug
tyrosinetyrosine : An alpha-amino acid that is phenylalanine bearing a hydroxy substituent at position 4 on the phenyl ring.

Tyrosine: A non-essential amino acid. In animals it is synthesized from PHENYLALANINE. It is also the precursor of EPINEPHRINE; THYROID HORMONES; and melanin.		amino acid zwitterion;
erythrose 4-phosphate/phosphoenolpyruvate family amino acid;
L-alpha-amino acid;
proteinogenic amino acid;
tyrosine		EC 1.3.1.43 (arogenate dehydrogenase) inhibitor;
fundamental metabolite;
micronutrient;
nutraceutical
leucineleucine : A branched-chain amino acid that consists of glycine in which one of the hydrogens attached to the alpha-carbon is substituted by an isobutyl group.

Leucine: An essential branched-chain amino acid important for hemoglobin formation.		amino acid zwitterion;
L-alpha-amino acid;
leucine;
proteinogenic amino acid;
pyruvate family amino acid		algal metabolite;
Escherichia coli metabolite;
human metabolite;
mouse metabolite;
plant metabolite;
Saccharomyces cerevisiae metabolite
methioninemethionine : A sulfur-containing amino acid that is butyric acid bearing an amino substituent at position 2 and a methylthio substituent at position 4.

Methionine: A sulfur-containing essential L-amino acid that is important in many body functions.		aspartate family amino acid;
L-alpha-amino acid;
methionine;
methionine zwitterion;
proteinogenic amino acid		antidote to paracetamol poisoning;
human metabolite;
micronutrient;
mouse metabolite;
nutraceutical
phenylalanineL-phenylalanine : The L-enantiomer of phenylalanine.

phenylalanine : An aromatic amino acid that is alanine in which one of the methyl hydrogens is substituted by a phenyl group.

Phenylalanine: An essential aromatic amino acid that is a precursor of MELANIN; DOPAMINE; noradrenalin (NOREPINEPHRINE), and THYROXINE.		amino acid zwitterion;
erythrose 4-phosphate/phosphoenolpyruvate family amino acid;
L-alpha-amino acid;
phenylalanine;
proteinogenic amino acid		algal metabolite;
EC 3.1.3.1 (alkaline phosphatase) inhibitor;
Escherichia coli metabolite;
human xenobiotic metabolite;
micronutrient;
mouse metabolite;
nutraceutical;
plant metabolite;
Saccharomyces cerevisiae metabolite
histidinehistidine : An alpha-amino acid that is propanoic acid bearing an amino substituent at position 2 and a 1H-imidazol-4-yl group at position 3.

Histidine: An essential amino acid that is required for the production of HISTAMINE.

L-histidine : The L-enantiomer of the amino acid histidine.		amino acid zwitterion;
histidine;
L-alpha-amino acid;
polar amino acid zwitterion;
proteinogenic amino acid		algal metabolite;
Escherichia coli metabolite;
human metabolite;
micronutrient;
mouse metabolite;
nutraceutical;
Saccharomyces cerevisiae metabolite
valineL-valine : The L-enantiomer of valine.

valine : A branched-chain amino acid that consists of glycine in which one of the hydrogens attached to the alpha-carbon is substituted by an isopropyl group.

Valine: A branched-chain essential amino acid that has stimulant activity. It promotes muscle growth and tissue repair. It is a precursor in the penicillin biosynthetic pathway.		L-alpha-amino acid;
L-alpha-amino acid zwitterion;
proteinogenic amino acid;
pyruvate family amino acid;
valine		algal metabolite;
Escherichia coli metabolite;
human metabolite;
micronutrient;
mouse metabolite;
nutraceutical;
Saccharomyces cerevisiae metabolite
tryptophantryptophan : An alpha-amino acid that is alanine bearing an indol-3-yl substituent at position 3.

Tryptophan: An essential amino acid that is necessary for normal growth in infants and for NITROGEN balance in adults. It is a precursor of INDOLE ALKALOIDS in plants. It is a precursor of SEROTONIN (hence its use as an antidepressant and sleep aid). It can be a precursor to NIACIN, albeit inefficiently, in mammals.		erythrose 4-phosphate/phosphoenolpyruvate family amino acid;
L-alpha-amino acid;
L-alpha-amino acid zwitterion;
proteinogenic amino acid;
tryptophan;
tryptophan zwitterion		antidepressant;
Escherichia coli metabolite;
human metabolite;
micronutrient;
mouse metabolite;
nutraceutical;
plant metabolite;
Saccharomyces cerevisiae metabolite
isoleucineisoleucine : A 2-amino-3-methylpentanoic acid having either (2R,3R)- or (2S,3S)-configuration.

Isoleucine: An essential branched-chain aliphatic amino acid found in many proteins. It is an isomer of LEUCINE. It is important in hemoglobin synthesis and regulation of blood sugar and energy levels.

L-isoleucine : The L-enantiomer of isoleucine.		aspartate family amino acid;
isoleucine;
L-alpha-amino acid;
L-alpha-amino acid zwitterion;
proteinogenic amino acid		algal metabolite;
Escherichia coli metabolite;
human metabolite;
mouse metabolite;
plant metabolite;
Saccharomyces cerevisiae metabolite
D-tryptophanD-alpha-amino acid;
tryptophan;
tryptophan zwitterion		bacterial metabolite
copper histidineD-alpha-amino acid;
histidine;
polar amino acid zwitterion		Saccharomyces cerevisiae metabolite
D-tyrosineD-alpha-amino acid;
D-alpha-amino acid zwitterion;
tyrosine		Escherichia coli metabolite
D-valineD-valine : The D-enantiomer of valine.D-alpha-amino acid;
D-alpha-amino acid zwitterion;
valine
phenylalanineD-alpha-amino acid;
D-alpha-amino acid zwitterion;
phenylalanine
1-methylhistidine1-methylhistidine : A methylhistidine in which the methyl group is located at N-1.

1-methylhistidine: found in muscle proteins; RN given refers to (L)-isomer

N(tele)-methyl-L-histidine : A L-histidine derivative in which the methyl group is at N(tele)-position.		L-histidine derivative;
non-proteinogenic L-alpha-amino acid;
zwitterion		human metabolite
2-aminobicyclo(2,2,1)heptane-2-carboxylic acid2-aminobicyclo(2,2,1)heptane-2-carboxylic acid: amino acid analog; releases insulin; RN given refers to unlabeled cpd without isomeric designationmonoterpenoid
D-leucineD-alpha-amino acid;
D-alpha-amino acid zwitterion;
leucine		bacterial metabolite;
Saccharomyces cerevisiae metabolite
3-tyrosine3-tyrosine: RN given refers to cpd with unspecified isomeric designation

L-m-tyrosine : A hydroxyphenylalanine that is L-phenylalanine with a substituent hydroxy group at position 3.		hydroxyphenylalanine;
L-alpha-amino acid zwitterion;
L-phenylalanine derivative;
non-proteinogenic L-alpha-amino acid;
phenols		plant metabolite