Cited by 717Sirtuins and Resveratrol in MedicineSphingolipid Metabolism and SignalingHistone Deacetylase Inhibitors Research

SIRT6 regulates TNF-α secretion through hydrolysis of long-chain fatty acyl lysine

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Jiang, Hong, Khan, Saba, Wang, Yi, Charron, Guillaume, He, Bin, Sebastian, Carlos, Du, Jintang, Kim, Ray +5 more·2013·Nature

Abstract

The Sir2 family of enzymes or sirtuins are known as nicotinamide adenine dinucleotide (NAD)-dependent deacetylases and have been implicated in the regulation of transcription, genome stability, metabolism and lifespan. However, four of the seven mammalian sirtuins have very weak deacetylase activity in vitro. Here we show that human SIRT6 efficiently removes long-chain fatty acyl groups, such as myristoyl, from lysine residues. The crystal structure of SIRT6 reveals a large hydrophobic pocket that can accommodate long-chain fatty acyl groups. We demonstrate further that SIRT6 promotes the secretion of tumour necrosis factor-α (TNF-α) by removing the fatty acyl modification on K19 and K20 of TNF-α. Protein lysine fatty acylation has been known to occur in mammalian cells, but the function and regulatory mechanisms of this modification were unknown. Our data indicate that protein lysine fatty acylation is a novel mechanism that regulates protein secretion. The discovery of SIRT6 as an enzyme that controls protein lysine fatty acylation provides new opportunities to investigate the physiological function of a protein post-translational modification that has been little studied until now.

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  • Some sirtuin family members mediate non-acetyl lysine acylations, such as succinylation, malonylation and fatty acid acylation, whose cellular functions are poorly understood.

    “Additionally, some members of the sirtuin family mediate non-acetyl lysine acylations (for example, succinylation, malonylation and fatty acid acylation)13–15, the cellular functions of which are so far poorly understood16.”
  • Several NAD+-dependent deacetylases, SIRT1, SIRT2, SIRT3 and SIRT6, have been previously reported to possess lysine defatty-acylation activities.

    “Several NAD+-dependent deacetylase, SIRT1, SIRT2, SIRT3 and SIRT6, have been previously reported to possess lysine defatty-acylation activities.15-17”
  • The majority of fatty-acylated proteins have N-glycine myristoylation or S-palmitoylation, while only a few proteins have lysine fatty acylation.

    “The majority of these fatty-acylated proteins have been reported to have N-glycine myristoylation or S-palmitoylation, while only a few proteins are reported to have lysine fatty acylation.15,34”
  • SIRT1, 2, 3 and SIRT6 are capable of hydrolyzing long chain fatty acyl groups from lysine residues.

    “and SIRT1, 2, 3 and SIRT6 are capable of hydrolyzing long chain fatty acyl groups from lysine residues.15-17”

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  1. [29]Sebastian C Deacetylase activity is required for STAT5-dependent GM-CSF functional activity in macrophages and differentiation to dendritic cells J Immunol 180 5898 5906 2008 18424709

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Authors
Jiang, H., Khan, S., Wang, Y., Charron, G., He, B., Sebastian, C., Du, J., Kim, R., Ge, E., Mostoslavsky, R., Hang, H. C., Hao, Q., & Lin, H.
Affiliations
  • Cornell University (US)
  • University of Hong Kong (HK)
  • Rockefeller University (US)
Corresponding author
  • Hao, Quan
  • Lin, Hening
Venue
Nature
Published
2013-04
Volume
496
Issue
7443
Pages
110-113
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W1972924731
Cited by
697
References
29
Citations by year
2026: 29 · 2025: 36 · 2024: 43 · 2023: 44 · 2022: 60 · 2021: 54 · 2020: 58 · 2019: 49 · 2018: 56 · 2017: 61 · 2016: 72 · 2015: 63 · 2014: 47 · 2013: 24
FWCI
32.88
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • Digital Access to Scholarship at Harvard (DASH) (Harvard University) (submittedVersion, cc-by)
  • RePEc: Research Papers in Economics (submittedVersion)
  • The HKU Scholars Hub (University of Hong Kong) (submittedVersion)
Funders
  • National Cancer Institute (R01CA175727)
  • National Institute of General Medical Sciences (R01GM093072, R01GM086703, R01GM087544)
  • National Institute of Diabetes and Digestive and Kidney Diseases (R01DK088190)
Topics
  • Health Sciences › Medicine › Geriatrics and Gerontology › Sirtuins and Resveratrol in Medicine
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Sphingolipid Metabolism and Signaling
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Histone Deacetylase Inhibitors Research
Keywords
SIRT6, sirtuins, TNF-alpha secretion, myristoylation, protein secretion regulation, post-translational modification, NAD+-dependent deacetylase, crystal structure
MeSH terms
Acylation, Binding Sites, Fatty Acids, Humans, Hydrolysis, Lysine, Protein Processing, Post-Translational, Tumor Necrosis Factor-alpha, Crystallography, X-Ray, Sirtuins, Hydrophobic and Hydrophilic Interactions

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