堿性木素 號：8068-05-1  
英文名稱：Lignin alkali；Lignin kraft   
其他名稱：利格寧；木質素；硫酸木素；牛皮木素；石成木素；對氮蒽藍；引杜林；醋酯藍；木質素磺酸鹽減水劑   
號：8068-05-1   
分子量：1000～5000   
級別：BR   
PH (1%水溶液)：11～12   
還原物含量：≤4%   
性狀(以下信息僅供參考)：棕色粉末，草漿提取，溶于水。   
用途：本品僅供科研，不得用于其它用途   
保存：RT 堿性木素 號：8068-05-1儲存條件：
避光、干燥陰涼處封閉貯存,嚴禁與有毒、有害物品混放、混運。本品為非危險 產品可按一般化學品運輸,輕搬動輕放,防止日曬、雨淋！受熱、受潮、受光后易喪失活力,保存期短,因此貯存和運輸條件比較苛刻。
運輸：汽車運輸、EMS郵政快遞，申通快遞等， 款到上海3天內發貨； 
售后：如您對我們的產品服務及技術指標有特殊要求，請及時通知我方。 
存儲：應貯存在干燥清潔避光的環境中，嚴禁與有毒物質混放，以免污染（保質期為兩年）。 
主要優級純、分級純和化學純3種：
（1）優級純（GR：Guaranteed reagent），又稱一級品或保證試劑，99.8%，這種試劑純度Z高，雜質含量Z低，適合于重要精密的分析工作和科學研究工作，使用綠色瓶簽。
（2）分析純（AR），又稱二級試劑，純度很高，99.7%，略次于優級純，適合于重要分析及一般研究工作，使用紅色瓶簽。
（3）化學純（CP），又稱三級試劑，≥ 99.5%，純度與分析純相差較大，適用于工礦、學校一般分析工作。使用藍色（深藍色）標簽。
（4）實驗試劑（LR：Laboratory reagent），又稱四級試劑。
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蛋白分子量  predicted molecular weight: 58/81kDa
性    狀  Lyophilized or Liquid
免 疫 原  KLH conjugated synthetic peptide derived from human SIRT1 C-terminus
亞    型  IgG
純化方法  affinity purified by Protein A
儲 存 液  0.01M PBS, pH 7.4 with 10 mg/ml BSA and 0.1% Sodium azide
產品應用   WB=1:100-500  ELISA=1:500-1000  IP=1:20-100  IHC-P=1:100-500  IHC-F=1:100-500  IF=1:100-500
（石蠟切片需做抗原修復）
 not yet tested in other applications.
 optimal dilutions/concentrations should be determined by the end user. 
保存條件  Store at -20 °C for one year. Avoid repeated freeze/thaw cycles. The lyophilized antibody is stable at room temperature for at least one month and for greater than a year when kept at -20°C. When reconstituted in sterile pH 7.4 0.01M PBS or diluent of antibody the antibody is stable for at least two weeks at 2-4 °C.
Important Note  This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications.
產品介紹 This gene encodes a member of the sirtuin family of proteins, homologs to the yeast Sir2 protein. Members of the sirtuin family are characterized by a sirtuin core domain and grouped into four classes. The functions of human sirtuins have not yet been determined; however, yeast sirtuin proteins are known to regulate epigenetic gene silencing and suppress recombination of rDNA. Studies suggest that the human sirtuins may function as intracellular regulatory proteins with mono-ADP-ribosyltransferase activity. The protein encoded by this gene is included in class I of the sirtuin family. Alternative splicing results in multiple transcript variants.
Function : SirtT1 75 kDa fragment: catalytically inactive 75SirT1 may be involved in regulation of apoptosis. May be involved in protecting chondrocytes from apoptotic death by associating with cytochrome C and interfering with apoptosome assembly.
Subunit : Found in a complex with PCAF and MYOD1 (By similarity). Component of the eNoSC complex, composed of SIRT1, SUV39H1 and RRP8. Interacts with HES1, HEY2 and PML. Interacts with RPS19BP1/AROS. Interacts with KIAA1967/DBC1 (via N-terminus); the interaction disrupts the interaction between SIRT1 and p53/TP53. Interacts with SETD7; the interaction induces the dissociation of SIRT1 from p53/TP53 and increases p53/TP53 activity. Interacts with MYCN, NR1I2, CREBZF, TSC2, TLE1, FOS, JUN, NR0B2, PPARG, NCOR, IRS1, IRS2 and NMNAT1. Interacts with HNF1A; the interaction occurs under nutrient restriction. Interacts with SUZ12; the interaction mediates the association with the PRC4 histone methylation complex which is specific as an association with PCR2 and PCR3 complex variants is not found. Interacts with -1 tat.
Subcellular Location : Nucleus, PML body. Cytoplasm. Note=Recruited to the nuclear bodies via its interaction with PML. Colocalized with APEX1 in the nucleus. May be found in nucleolus, nuclear euchromatin, heterochromatin and inner membrane. Shuttles between nucleus and cytoplasm.
SirtT1 75 kDa fragment: Cytoplasm. Mitochondrion.
Tissue Specificity : Widely expressed.
Post-translational modifications : Methylated on multiple lysine residues; methylation is enhanced after DNA damage and is dispensable for deacetylase activity toward p53/TP53.
Phosphorylated. Phosphorylated by STK4/MST1, resulting in inhibition of SIRT1-mediated p53/TP53 deacetylation. Phosphorylation by MAPK8/JNK1 at Ser-27, Ser-47, and Thr-530 leads to increased nuclear localization and enzymatic activity. Phosphorylation at Thr-530 by DYRK1A and DYRK3 acivates deacetylase activity and promotes cell survival. Phosphorylation by mammalian target of rapamycin complex 1 (mTORC1) at Ser-47 inhibits deacetylation activity. Phosphorylated by CaMK2, leading to increased p53/TP53 and NF-kappa-B p65/RELA deacetylation activity (By similarity). Phosphorylation at Ser-27 implicating MAPK9 is linked to protein stability. There is some ambiguity for some phosphosites: Ser-159/Ser-162 and Thr-544/Ser-545.
Proteolytically cleaved by cathepsin B upon TNF-alpha treatment to yield catalytic inactive but stable SirtT1 75 kDa fragment (75SirT1).
S-nitrosylated by GAPDH, leading to inhibit the NAD-dependent protein deacetylase activity (By similarity).
Similarity : Belongs to the sirtuin family.
Contains 1 deacetylase sirtuin-type domain.
Database links : UniProtKB/Swiss-Prot: Q96EB6.2
在Sirtuin蛋白家族中，sirtuin 1(沉默信息調節子)參與多種新陳代謝活動，包括DNA的自我保護和修復，抑制脂質過氧化積累，抑制其他細胞凋亡相關基因的表達以及和細胞壽命相關的活動。限制攝入的熱量可以加強SIRT1的表達，從而延長了壽命。
SIRT蛋白成為多種生物過程的調節者也參與衰老的調控。在研究Z多的SIRT蛋白中，SIRT