Enkephalins
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  Enkephalins



Enkephalins

   One of the three major families of endogenous opioid peptides. The enkephalins are pentapeptides that are widespread in the central and peripheral nervous systems and in the adrenal medulla.

RELATED TERMS
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Families
A social group consisting of parents or parent substitutes and children.

Endogenous
Produced from within.

Opioid
A peptide, naturally occurring in the brain and elsewhere in the body, the effect of which resembles that of opium or a morphine-like synthetic opiate.

Enkephalins
One of the three major families of endogenous opioid peptides. The enkephalins are pentapeptides that are widespread in the central and peripheral nervous systems and in the adrenal medulla.

Central
In anatomy and medicine (as elsewhere), central is the opposite of "peripheral" which means away from the center.

Peripheral
At or near the surface of the body. Located away from the center structure.

Medulla
The inner part of an organ. The adrenal medulla is the center of the adrenal gland where epinephrine (adrenaline) is produced.



SIMILAR TERMS
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Enkephalin
One of the endorphins, and the one that predominates in the brain. There are two basic types, methionine and leucine enkephalin.

Enkephalin Dipeptidyl Carboxypeptidase
Enzyme that is a major constituent of kidney brush-border membranes and is also present to a lesser degree in the brain and other tissues. It preferentially catalyzes cleavage at the amino group of hydrophobic residues of the B-chain of insulin as well as opioid peptides and other biologically active peptides. The enzyme is inhibited primarily by EDTA, phosphoramidon, and thiorphan and is reactivated by zinc. Neprilysin is identical to common acute lymphoblastic leukemia antigen (CALLA), an important marker in the diagnosis of human acute lymphocytic leukemia. EC 3.4.24.11.

Enkephalin Receptor
Cell membrane proteins that bind opioids and trigger intracellular changes which influence the behavior of cells. The endogenous ligands for opioid receptors in mammals include three families of peptides, the enkephalins, endorphins, and dynorphins. The receptor classes include mu, delta, and kappa receptors. Sigma receptors bind several psychoactive substances, including certain opioids, but their endogenous ligands are not known.

Enkephalin Receptors
Cell membrane proteins that bind opioids and trigger intracellular changes which influence the behavior of cells. The endogenous ligands for opioid receptors in mammals include three families of peptides, the enkephalins, endorphins, and dynorphins. The receptor classes include mu, delta, and kappa receptors. Sigma receptors bind several psychoactive substances, including certain opioids, but their endogenous ligands are not known.

Enkephalin, 2-Alanyl-Leucine
A delta-selective opioid (ANALGESICS, OPIOID). It can cause transient depression of mean arterial blood pressure and heart rate.

Enkephalin, 5-Leucine
Tyrosylglycylglycylphenylalanylleucine. Endogenous pentapeptide with morphine-like activity. The amino acid in position 5 is leucine.

Enkephalin, 5-Leucine-2-Alanine
A delta-selective opioid (ANALGESICS, OPIOID). It can cause transient depression of mean arterial blood pressure and heart rate.

Enkephalin, 5-Methionine
Endogenous pentapeptide with morphine-like activity. The amino acid in position 5 is methionine.

Enkephalin, Ala(2)-MePhe(4)-Gly(5)-
An enkephalin analog that selectively binds to the mu opioid receptor. It is used as a model for drug permeability experiments.

Enkephalin, alanyl(2)-methylphenylalanyl(4)-glycine(5)-
An enkephalin analog that selectively binds to the mu opioid receptor. It is used as a model for drug permeability experiments.

Enkephalin, D-Ala2-NMe-Phe4-Gly-ol
An enkephalin analog that selectively binds to the mu opioid receptor. It is used as a model for drug permeability experiments.

Enkephalin, D-Penicillamine (2,5)-
A disulfide opioid pentapeptide that selectively binds to the delta opiate receptor (RECEPTORS, OPIOID, DELTA). It possesses antinociceptive activity.

Enkephalin, Leucine
Tyrosylglycylglycylphenylalanylleucine. Endogenous pentapeptide with morphine-like activity. The amino acid in position 5 is leucine.

Enkephalin, Leucine 2 Alanine
A delta-selective opioid (ANALGESICS, OPIOID). It can cause transient depression of mean arterial blood pressure and heart rate.

Enkephalin, Leucine-2-Alanine
A delta-selective opioid (ANALGESICS, OPIOID). It can cause transient depression of mean arterial blood pressure and heart rate.

Enkephalin, Methionine
Endogenous pentapeptide with morphine-like activity. The amino acid in position 5 is methionine.

Enkephalin, Pen(2,5)-
A disulfide opioid pentapeptide that selectively binds to the delta opiate receptor (RECEPTORS, OPIOID, DELTA). It possesses antinociceptive activity.

Enkephalin, Penicillamine (2,5)-
A disulfide opioid pentapeptide that selectively binds to the delta opiate receptor (RECEPTORS, OPIOID, DELTA). It possesses antinociceptive activity.

Enkephalin-2-Alanine, Leucine
A delta-selective opioid (ANALGESICS, OPIOID). It can cause transient depression of mean arterial blood pressure and heart rate.

Enkephalin-Leu,Ala(2)
A delta-selective opioid (ANALGESICS, OPIOID). It can cause transient depression of mean arterial blood pressure and heart rate.

Enkephalinase
Enzyme that is a major constituent of kidney brush-border membranes and is also present to a lesser degree in the brain and other tissues. It preferentially catalyzes cleavage at the amino group of hydrophobic residues of the B-chain of insulin as well as opioid peptides and other biologically active peptides. The enzyme is inhibited primarily by EDTA, phosphoramidon, and thiorphan and is reactivated by zinc. Neprilysin is identical to common acute lymphoblastic leukemia antigen (CALLA), an important marker in the diagnosis of human acute lymphocytic leukemia. EC 3.4.24.11.

Enkephalinase 24.11
Enzyme that is a major constituent of kidney brush-border membranes and is also present to a lesser degree in the brain and other tissues. It preferentially catalyzes cleavage at the amino group of hydrophobic residues of the B-chain of insulin as well as opioid peptides and other biologically active peptides. The enzyme is inhibited primarily by EDTA, phosphoramidon, and thiorphan and is reactivated by zinc. Neprilysin is identical to common acute lymphoblastic leukemia antigen (CALLA), an important marker in the diagnosis of human acute lymphocytic leukemia. EC 3.4.24.11.

Enkephalinase-24.11
Enzyme that is a major constituent of kidney brush-border membranes and is also present to a lesser degree in the brain and other tissues. It preferentially catalyzes cleavage at the amino group of hydrophobic residues of the B-chain of insulin as well as opioid peptides and other biologically active peptides. The enzyme is inhibited primarily by EDTA, phosphoramidon, and thiorphan and is reactivated by zinc. Neprilysin is identical to common acute lymphoblastic leukemia antigen (CALLA), an important marker in the diagnosis of human acute lymphocytic leukemia. EC 3.4.24.11.



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Enkephalins

Enkephalinase-24.11
Enzyme that is a major constituent of kidney brush-border membranes and is also present to a lesser degree in the brain and other tissues. It preferentially catalyzes cleavage at the amino group of hydrophobic residues of the B-chain of insulin as well as opioid peptides and other biologically active peptides. The enzyme is inhibited primarily by EDTA, phosphoramidon, and thiorphan and is reactivated by zinc. Neprilysin is identical to common acute lymphoblastic leukemia antigen (CALLA), an important marker in the diagnosis of human acute lymphocytic leukemia. EC 3.4.24.11.

Enkephalinase 24.11
Enzyme that is a major constituent of kidney brush-border membranes and is also present to a lesser degree in the brain and other tissues. It preferentially catalyzes cleavage at the amino group of hydrophobic residues of the B-chain of insulin as well as opioid peptides and other biologically active peptides. The enzyme is inhibited primarily by EDTA, phosphoramidon, and thiorphan and is reactivated by zinc. Neprilysin is identical to common acute lymphoblastic leukemia antigen (CALLA), an important marker in the diagnosis of human acute lymphocytic leukemia. EC 3.4.24.11.

Enkephalinase
Enzyme that is a major constituent of kidney brush-border membranes and is also present to a lesser degree in the brain and other tissues. It preferentially catalyzes cleavage at the amino group of hydrophobic residues of the B-chain of insulin as well as opioid peptides and other biologically active peptides. The enzyme is inhibited primarily by EDTA, phosphoramidon, and thiorphan and is reactivated by zinc. Neprilysin is identical to common acute lymphoblastic leukemia antigen (CALLA), an important marker in the diagnosis of human acute lymphocytic leukemia. EC 3.4.24.11.

Enoyl CoA Hydratases
An enzyme that catalyzes reversibly the hydration of unsaturated fatty acyl-CoA to yield beta-hydroxyacyl-CoA. It plays a role in the oxidation of fatty acids and in mitochondrial fatty acid synthesis, has broad specificity, and is most active with crotonyl-CoA. EC 4.2.1.17.

Enoyl CoA Hydratase
An enzyme that catalyzes reversibly the hydration of unsaturated fatty acyl-CoA to yield beta-hydroxyacyl-CoA. It plays a role in the oxidation of fatty acids and in mitochondrial fatty acid synthesis, has broad specificity, and is most active with crotonyl-CoA. EC 4.2.1.17.

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