NAD-dependent protein deacetylase sirtuin-1 (SIRT1), human, recombinant

Organism: Homo sapiens (Human). Source: E.coli. Expression Region: 2-747aa. Protein Length: Full Length of Mature Protein. Tag Info: N-terminal 6xHis-tagged. Target Protein Sequence: ADEAALALQP GGSPSAAGAD REAASSPAGE PLRKRPRRDG PGLERSPGEP GGAAPEREVP AAARGCPGAA AAALWREAEA EAAAAGGEQE AQATAAAGEG DNGPGLQGPS REPPLADNLY DEDDDDEGEE EEEAAAAAIG YRDNLLFGDE IITNGFHSCE SDEEDRASHA SSSDWTPRPR IGPYTFVQQH LMIGTDPRTI LKDLLPETIP PPELDDMTLW QIVINILSEP PKRKKRKDIN TIEDAVKLLQ ECKKIIVLTG AGVSVSCGIP DFRSRDGIYA RLAVDFPDLP DPQAMFDIEY FRKDPRPFFK FAKEIYPGQF QPSLCHKFIA LSDKEGKLLR NYTQNIDTLE QVAGIQRIIQ CHGSFATASC LICKYKVDCE AVRGDIFNQV VPRCPRCPAD EPLAIMKPEI VFFGENLPEQ FHRAMKYDKD EVDLLIVIGS SLKVRPVALI PSSIPHEVPQ ILINREPLPH LHFDVELLGD CDVIINELCH RLGGEYAKLC CNPVKLSEIT EKPPRTQKEL AYLSELPPTP LHVSEDSSSP ERTSPPDSSV IVTLLDQAAK SNDDLDVSES KGCMEEKPQE VQTSRNVESI AEQMENPDLK NVGSSTGEKN ERTSVAGTVR KCWPNRVAKE QISRRLDGNQ YLFLPPNRYI FHGAEVYSDS EDDVLSSSSC GSNSDSGTCQ SPSLEEPMED ESEIEEFYNG LEDEPDVPER AGGAGFGTDG DDQEAINEAI SVKQEVTDMN YPSNKS. Purity: Greater than 90% as determined by SDS-PAGE. Endotoxin: Not test. Biological Activity: n/a. Form: Liquid or Lyophilized powder. Buffer: If the delivery form is liquid, the default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. If the delivery form is lyophilized powder, the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0. Reconstitution: We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20 °C/-80 °C. Our default final concentration of glycerol is 50%. Customers could use it as reference. Storage: The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself. Generally, the shelf life of liquid form is 6 months at -20 °C/-80 °C. The shelf life of lyophilized form is 12 months at -20 °C/-80 °C. Notes: Repeated freezing and thawing is not recommended. Store working aliquots at 4 °C for up to one week. Relevance: Inhibited by nicotinamide. Activated by resveratrol (3,5,4'-trihydroxy-trans-stilbene), butein (3,4,2',4'-tetrahydroxychalcone), piceatannol (3,5,3',4'-tetrahydroxy-trans-stilbene), Isoliquiritigenin (4,2',4'-trihydroxychalcone), fisetin (3,7,3',4'-tetrahydroxyflavone) and quercetin (3,5,7,3',4'-pentahydroxyflavone). MAPK8/JNK1 and RPS19BP1/AROS act as positive regulators of deacetylation activity. Negatively regulated by CCAR2. Reference: "Inhibition of silencing and accelerated aging by nicotinamide, a putative negative regulator of yeast sir2 and human SIRT1."Bitterman K.J., Anderson R.M., Cohen H.Y., Latorre-Esteves M., Sinclair D.A.J. Biol. Chem. 277:45099-45107(2002). Function: NAD-dependent protein deacetylase that links transcriptional regulation directly to intracellular energetics and participates in the coordination of several separated cellular functions such as cell cycle, response to DNA damage, metobolism, apoptosis and autophagy. Can modulate chromatin function through deacetylation of histones and can promote alterations in the methylation of histones and DNA, leading to transcriptional repression. Deacetylates a broad range of transcription factors and coregulators, thereby regulating target gene expression positively and negatively. Serves as a sensor of the cytosolic ratio of NAD(+)/NADH which is altered by glucose deprivation and metabolic changes associated with caloric restriction. Is essential in skeletal muscle cell differentiation and in response to low nutrients mediates the inhibitory effect on skeletal myoblast differentiation which also involves 5'-AMP-activated protein kinase (AMPK) and nicotinamide phosphoribosyltransferase (NAMPT). Component of the eNoSC (energy-dependent nucleolar silencing) complex, a complex that mediates silencing of rDNA in response to intracellular energy status and acts by recruiting histone-modifying enzymes. The eNoSC complex is able to sense the energy status of cell