Selected-GenAtlas references SOURCE GeneCards NCBI Gene Swiss-Prot Ensembl
HGNC UniGene Nucleotide OMIM UCSC
Home Page
FLASH GENE
Symbol SIRT7 contributors: mct - updated : 24-01-2019
HGNC name sirtuin (silent mating type information regulation 2 homolog) 7 (S. cerevisiae)
HGNC id 14935
Location 17q25.3      Physical location : 79.869.814 - 79.876.058
Synonym name
  • silent mating type information regulation 2, S.cerevisiae, homolog 7
  • sir2-related protein type 7
  • sirtuin 7
  • Synonym symbol(s) SIR2L7, MGC126840, MGC126842
    EC.number 3.5.1.-
    DNA
    TYPE functioning gene
    STRUCTURE 6.24 kb     10 Exon(s)
    10 Kb 5' upstream gene genomic sequence study
    MAPPING cloned Y linked N status provisional
    RNA
    TRANSCRIPTS type messenger
    identificationnb exonstypebpproduct
    ProteinkDaAAspecific expressionYearPubmed
    10 - 1749 - 400 - Ashraf (2006)
    EXPRESSION
    Type widely
       expressed in (based on citations)
    organ(s)
    SystemOrgan level 1Organ level 2Organ level 3Organ level 4LevelPubmedSpeciesStageRna symbol
    Digestivestomach   highly
    Endocrinepancreas   predominantly
    Reproductivefemale systemuteruscervix highly
     female systemovary  highly
     female systemplacenta  highly
     male systemtestis  highly
    tissue
    SystemTissueTissue level 1Tissue level 2LevelPubmedSpeciesStageRna symbol
    Connectiveadipose  highly
    Connectivebone   
    cell lineage
    cell lines
    fluid/secretion blood
    at STAGE
    physiological period pregnancy
    Text placenta
    PROTEIN
    PHYSICAL PROPERTIES
    STRUCTURE
    motifs/domains
  • a deacetylase sirtuin-type core domain
  • HOMOLOGY
    interspecies homolog to yeast Sir2
    ortholog to rattus Sirt7 predicted
    homolog to murine Sirt7
    homolog to Drosophila sirt7
    Homologene
    FAMILY sirtuin family, class IV
    CATEGORY enzyme , regulatory
    SUBCELLULAR LOCALIZATION     intracellular
    intracellular,cytoplasm
    intracellular,nucleus,chromatin/chromosome
    intracellular,nucleus,nucleolus
    text
  • located under the nuclear membrane
  • existence of a cytoplasmic pool of SIRT7 in addition to its well-known nucleolar form
  • basic FUNCTION
  • NAD(+) ADP ribosyltransferase with a protein deacetylase activity
  • acting via the formation of large multiprotein complexes that are responsible for the deacetylation of lysine residues on the N-terminal part of the core histones (H2A, H2B, H3 and H4)
  • positive regulator of RNA polymerase I (Pol I) transcription and is required for cell viability in mammals
  • by participating in the stress response to genomic insults, sirtuins are thought to protect against cancer, but they are also emerging as direct participants in the growth of some cancers (Saunders 2007)
  • involved in resumption of rDNA transcription at the exit from mitosis
  • may enable cells to sustain critical metabolic functions by inhibiting cell growth even under severe stress conditions
  • is an NAD+-dependent H3K18Ac (acetylated lysine 18 of histone H3) deacetylase that stabilizes the transformed state of cancer cells
  • pivotal role for SIRT7 in chromatin regulation, cellular transformation programs and tumour formation
  • association between loss of nucleolar SIRT7 and replicative senescence
  • novel molecular function of SIRT7 as a negative regulator of HIF signaling
  • is involved in multiple pathways involved in ribosome biogenesis, and potentially its down-regulation may contribute to an antitumor effect, partly through the inhibition of protein synthesis
  • participates in rDNA transcription in the nucleolus
  • is at the crossroads of chromatin signaling, metabolic, and tumor-regulatory pathways
  • hepatic SIRT7 controls lipid metabolism in liver by regulating the ubiquitin-proteasome pathway
  • is a crucial regulator of mitochondrial homeostasis
  • attenuates DNA damage, SAPK activation and TP53 response thereby promoting cellular survival under conditions of genomic stress
  • SIRT7 and DDX21 cooperate to prevent R-loop accumulation, thus safeguarding genome integrity
  • CELLULAR PROCESS nucleotide, transcription, regulation
    PHYSIOLOGICAL PROCESS electron transport
    text
  • protein ADP-ribosylation
  • chromatin silencing
  • proline biosynthesis
  • PATHWAY
    metabolism aminoacid
    signaling
    a component
    INTERACTION
    DNA
    RNA
    small molecule metal binding, cofactor,
  • Zn2+
  • protein
  • ELK4 functions to target SIRT7 to specific promoters for H3K18 deacetylation
  • MYBBP1A binds to SIRT7, and is a novel negative regulator of SIRT7
  • vassociates with chromatin, where it catalyzes selective deacetylation of lysine 18 on histone H3 (H3K18), an emerging epigenetic biomarker of aggressive tumors and poor clinical outcome in patients with cancer
  • is a dynamic nuclear regulator of mitochondrial function through its impact on GABPB1 function
  • nucleolar sirtuin 7 (SIRT7) is a major deacetylase that negatively regulates DDB1-CUL4B interaction
  • SIRT7 has a critical role in bone formation by regulating acylation of SP7
  • SIRT7 interacts with, stabilizes and modulates SLC12A7 activity through deacetylation, revealing a novel role for SIRT7 in renal physiology
  • cell & other
    REGULATION
    ASSOCIATED DISORDERS
    corresponding disease(s)
    Other morbid association(s)
    TypeGene ModificationChromosome rearrangementProtein expressionProtein Function
    tumoral     --over  
    overexpressed in human thyroid carcinoma cell lines and tissues
    Susceptibility
    Variant & Polymorphism
    Candidate gene
    Marker
    Therapy target
    SystemTypeDisorderPubmed
    cancer  
    is a promising pharmacologic target for epigenetic cancer therapy
    ANIMAL & CELL MODELS
  • Sirt7 deficiency in mice induces multisystemic mitochondrial dysfunction, which is reflected by increased blood lactate levels, reduced exercise performance, cardiac dysfunction, hepatic microvesicular steatosis, and age-related hearing loss
  • suppresses ER stress and reverts the fatty liver disease in diet-induced obese mice