Cited by 458Nitric Oxide and Endothelin EffectsCancer-related gene regulationPolyamine Metabolism and Applications

Biological significance of endogenous methylarginines that inhibit nitric oxide synthases

Leiper, J·1999·Cardiovascular Research

Abstract

The guanidino-methylated arginine analogue NG monomethyl-L-arginine (L-NMMA) has been the standard nitric oxide synthase inhibitor used to evaluate the role of the L-arginine:nitric oxide pathway. However, L-NMMA and other methylated arginine residues are also synthesised in vivo by the action of a family of enzymes known as protein arginine methyltransferases. Proteolysis of proteins containing methylated arginine residues releases free methylarginine residues into the cytosol from where they may pass out of the cell into plasma. Of the three known methylarginine residues produced in mammals only asymmetrically methylated forms (L-NMMA and asymmetric dimethylarginine (ADMA)) but not symmetrically methylated arginine (symmetric dimethylarginine (SDMA)) inhibit nitric oxide synthase (NOS). We and others have proposed that endogenously produced asymmetrically methylated arginines may modulate NO production and that the accumulation of these residues in disease states may contribute to pathology. The activity of the enzyme dimethylarginine dimethylaminohydrolase that metabolises asymmetric methylarginines may be of critical importance in affecting NO pathways in health or disease.

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Authors
Leiper, J.
Affiliations
University College London (GB)
Corresponding author
Leiper, J
Venue
Cardiovascular Research
Published
1999-08-15
Volume
43
Issue
3
Pages
542-548
ISSN
0008-6363 (ISSN-L)
OpenAlex
W2153125904
Cited by
458
References
54
Citations by year
2026: 3 · 2025: 7 · 2024: 5 · 2023: 10 · 2022: 5 · 2021: 12 · 2020: 13 · 2019: 13 · 2018: 10 · 2017: 16 · 2016: 12 · 2015: 23 · 2014: 18 · 2013: 23 · 2012: 20
FWCI
1.94
Type
journal article
Language
en
Open access
closed
Locations
  • Cardiovascular Research (publishedVersion)
  • PubMed (publishedVersion)
  • UCL Discovery (University College London) (submittedVersion)
Topics
  • Health Sciences › Medicine › Physiology › Nitric Oxide and Endothelin Effects
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cancer-related gene regulation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Polyamine Metabolism and Applications
Keywords
nitric oxide synthase inhibition, L-NMMA, asymmetric dimethylarginine, symmetric dimethylarginine, protein arginine methyltransferase, dimethylarginine dimethylaminohydrolase, L-arginine-nitric oxide pathway, nitric oxide production, asymmetric methylation
MeSH terms
Amidohydrolases, Animals, Arginine, Cytosol, Enzyme Inhibitors, Humans, Hydrolases, Isoenzymes, Nitric Oxide, Protein-Arginine N-Methyltransferases, Nitric Oxide Synthase, omega-N-Methylarginine

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