Cited by 553Sirtuins and Resveratrol in MedicineNuclear Structure and FunctionBiochemical and Molecular Research

Mouse Sir2 Homolog SIRT6 Is a Nuclear ADP-ribosyltransferase

Open access
Liszt, Gregory, Ford, Ethan, Kurtev, Martin, Guarente, Leonard·2005·Journal of Biological Chemistry

Abstract

Members of the Sir2 family of NAD-dependent protein deacetylases regulate diverse cellular processes including aging, gene silencing, and cellular differentiation. Here, we report that the distant mammalian Sir2 homolog SIRT6 is a broadly expressed, predominantly nuclear protein. Northern analysis of embryonic samples and multiple adult tissues revealed mouse SIRT6 (mSIRT6) mRNA peaks at day E11, persisting into adulthood in all eight tissues examined. At the protein level, mSIRT6 was readily detectable in the same eight tissue types, with the highest levels in muscle, brain, and heart. Subcellular localization studies using both C- and N-terminal green fluorescent protein fusion proteins showed mSIRT6-green fluorescent protein to be a predominantly nuclear protein. Indirect immunofluorescence using antibodies to two different mSIRT6 epitopes confirmed that endogenous mSIRT6 is also largely nuclear. Consistent with previous findings, we did not observe any NAD+-dependent protein deacetylase activity in preparations of mSIRT6. However, purified recombinant mSIRT6 did catalyze the robust transfer of radiolabel from [32P]NAD to mSIRT6. Two highly conserved residues within the catalytic core of the protein were required for this reaction. This reaction is most likely mono-ADP-ribosylation because only the modified form of the protein was recognized by an antibody specific to mono-ADP-ribose. Surprisingly, we observed that the catalytic mechanism of this reaction is intra-molecular, with individual molecules of mSIRT6 directing their own modification. These results provide the first characterization of a Sir2 protein from phylogenetic class IV.

Integrity signals

Registry

Crossref · 10.1074/jbc.m413296200

Cites

31 of 31 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

We couldn’t retrieve this paper’s full text, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Liszt, G., Ford, E., Kurtev, M., & Guarente, L.
Affiliations
Massachusetts Institute of Technology (US)
Corresponding author
Guarente, Leonard
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2005-06
Volume
280
Issue
22
Pages
21313-21320
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2044836637
Cited by
548
References
31
Citations by year
2026: 7 · 2025: 13 · 2024: 12 · 2023: 20 · 2022: 24 · 2021: 35 · 2020: 30 · 2019: 26 · 2018: 34 · 2017: 25 · 2016: 34 · 2015: 35 · 2014: 23 · 2013: 43 · 2012: 30
FWCI
12.14
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Geriatrics and Gerontology › Sirtuins and Resveratrol in Medicine
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Nuclear Structure and Function
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Biochemical and Molecular Research
Keywords
SIRT6, ADP-ribosyltransferase, mono-ADP-ribosylation, NAD+-dependent deacetylase, nuclear localization, tissue expression, embryonic development, catalytic mechanism
MeSH terms
Actins, Adenosine Diphosphate, Adenosine Diphosphate Ribose, Amino Acid Sequence, Animals, Epitopes, Catalysis, Cell Nucleus, Cytoplasm, Dose-Response Relationship, Drug, Microscopy, Fluorescence, Molecular Sequence Data, Phylogeny, Plasmids, Recombinant Fusion Proteins, Recombinant Proteins, Ribose, RNA, RNA, Messenger, Serine, Time Factors, Tissue Distribution, Blotting, Northern, Blotting, Western, Sequence Homology, Amino Acid, Protein Structure, Tertiary, Fluorescent Antibody Technique, Indirect, Catalytic Domain, Gene Silencing, ADP Ribose Transferases, Sirtuins, NIH 3T3 Cells, Green Fluorescent Proteins, Mice, Sirtuin 2

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review