Rat NAD-dependent protein deacetylase sirtuin-7 (Sirt7) ELISA Kit
The Rat NAD-dependent Protein Deacetylase Sirtuin 7 (SIRT7) ELISA Kit is a highly sensitive and specific assay designed for the accurate detection of SIRT7 levels in rat serum, plasma, and cell culture supernatants. SIRT7 is a key enzyme involved in gene expression regulation, cellular metabolism, and aging processes, making it a valuable target for research in a variety of fields including cancer, metabolic disorders, and aging-related conditions.This kit offers unparalleled accuracy and reproducibility, allowing researchers to confidently measure SIRT7 levels in biological samples and study its potential role in disease development and progression.
With its user-friendly protocol and reliable performance, the Rat NAD-dependent Protein Deacetylase SIRT7 ELISA Kit is an indispensable tool for investigating the mechanisms underlying various physiological and pathological processes associated with SIRT7 activity.
Product Name:
Rat NAD-dependent protein deacetylase sirtuin-7 (Sirt7) ELISA Kit
SKU:
RTEB0694
Size:
96T
Target:
Rat NAD-dependent protein deacetylase sirtuin-7 (Sirt7)
Synonyms:
Regulatory protein SIR2 homolog 7, SIR2-like protein 7
Assay Type:
Sandwich
Detection Method:
ELISA
Reactivity:
Rat
Detection Range:
0.312-20ng/mL
Sensitivity:
0.097ng/mL
Intra CV:
4.2%
Inter CV:
6.8%
Linearity:
Sample
1:2
1:4
1:8
1:16
Serum(N=5)
108-117%
96-96%
106-115%
97-109%
EDTA Plasma(N=5)
94-106%
103-112%
105-116%
100-109%
Heparin Plasma(N=5)
103-115%
86-95%
102-113%
80-92%
Recovery:
Sample Type
Average(%)
Recovery Range(%)
Serum
90
84-96
Plasma
92
86-98
Function:
NAD-dependent protein deacetylase that specifically mediates deacetylation of histone H3 at 'Lys-18' (H3K18Ac). In contrast to other histone deacetylases, displays selectivity for a single histone mark, H3K18Ac, directly linked to control of gene expression. H3K18Ac is mainly present around the transcription start site of genes and has been linked to activation of nuclear hormone receptors. SIRT7 thereby acts as a transcription repressor. Moreover, H3K18 hypoacetylation has been reported as a marker of malignancy in various cancers and seems to maintain the transformed phenotype of cancer cells. These data suggest that SIRT7 may play a key role in oncogenic transformation by suppresses expression of tumor suppressor genes by locus-specific deacetylation of H3K18Ac at promoter regions. Also required to restore the transcription of ribosomal RNA (rRNA) at the exit from mitosis: promotes the association of RNA polymerase I with the rDNA promoter region and coding region. Stimulates transcription activity of the RNA polymerase I complex. May also deacetylate p53/TP53 and promotes cell survival, however such data need additional confirmation.
Uniprot:
B2RZ55
Sample Type:
Serum, plasma, tissue homogenates, cell culture supernates and other biological fluids
Specificity:
Natural and recombinant rat NAD-dependent protein deacetylase sirtuin-7
Sub Unit:
Interacts with UBTF and the RNA polymerase I complex. Interacts with components of the B-WICH complex, such as MYBBP1A, SMARCA5/SNF2H and BAZ1B/WSTF. Interacts with ELK4, leading to stabilization at target promoters for H3K18Ac deacetylation. Interacts with histone H2A and/or histone H2B.
Subcellular Location:
Cytoplasm Nucleus Nucleolus Located close to the nuclear membrane when in the cytoplasm. Associated with chromatin. Associated with rDNA promoter and transcribed region. Associated with nucleolar organizer regions during mitosis.
Storage:
Please see kit components below for exact storage details
Note:
For research use only
UniProt Protein Function:
SIRT7: NAD-dependent protein deacetylase that specifically mediates deacetylation of histone H3 at 'Lys-18' (H3K18Ac). In contrast to other histone deacetylases, displays selectivity for a single histone mark, H3K18Ac, directly linked to control of gene expression. H3K18Ac is mainly present around the transcription start site of genes and has been linked to activation of nuclear hormone receptors. SIRT7 thereby acts as a transcription repressor. Moreover, H3K18 hypoacetylation has been reported as a marker of malignancy in various cancers and seems to maintain the transformed phenotype of cancer cells. These data suggest that SIRT7 may play a key role in oncogenic transformation by suppresses expression of tumor suppressor genes by locus-specific deacetylation of H3K18Ac at promoter regions. Also required to restore the transcription of ribosomal RNA (rRNA) at the exit from mitosis: promotes the association of RNA polymerase I with the rDNA promoter region and coding region. Stimulates transcription activity of the RNA polymerase I complex. May also deacetylate p53/TP53 and promotes cell survival, however such data need additional confirmation. Belongs to the sirtuin family. Class IV subfamily. 3 isoforms of the human protein are produced by alternative splicing.Protein type: Deacetylase; EC 3.5.1.-; NucleolusChromosomal Location of Human Ortholog: 10q32.3Cellular Component: cytoplasm; nucleolus; nucleolus organizer regionMolecular Function: chromatin binding; metal ion bindingBiological Process: activation of transcription on exit from mitosis; negative regulation of transcription from RNA polymerase II promoter; rRNA transcription
Regulatory protein SIR2 homolog 7; SIR2-like protein 7
Protein Family:
NAD-dependent protein deacetylase
UniProt Gene Name:
Sirt7
UniProt Entry Name:
Component
Quantity (96 Assays)
Storage
ELISA Microplate (Dismountable)
8×12 strips
-20°C
Lyophilized Standard
2
-20°C
Sample Diluent
20ml
-20°C
Assay Diluent A
10mL
-20°C
Assay Diluent B
10mL
-20°C
Detection Reagent A
120µL
-20°C
Detection Reagent B
120µL
-20°C
Wash Buffer
30mL
4°C
Substrate
10mL
4°C
Stop Solution
10mL
4°C
Plate Sealer
5
-
Other materials and equipment required:
Microplate reader with 450 nm wavelength filter
Multichannel Pipette, Pipette, microcentrifuge tubes and disposable pipette tips
Incubator
Deionized or distilled water
Absorbent paper
Buffer resevoir
*Note: The below protocol is a sample protocol. Protocols are specific to each batch/lot. For the correct instructions please follow the protocol included in your kit.
Allow all reagents to reach room temperature (Please do not dissolve the reagents at 37°C directly). All the reagents should be mixed thoroughly by gently swirling before pipetting. Avoid foaming. Keep appropriate numbers of strips for 1 experiment and remove extra strips from microtiter plate. Removed strips should be resealed and stored at -20°C until the kits expiry date. Prepare all reagents, working standards and samples as directed in the previous sections. Please predict the concentration before assaying. If values for these are not within the range of the standard curve, users must determine the optimal sample dilutions for their experiments. We recommend running all samples in duplicate.
Step
1.
Add Sample: Add 100µL of Standard, Blank, or Sample per well. The blank well is added with Sample diluent. Solutions are added to the bottom of micro ELISA plate well, avoid inside wall touching and foaming as possible. Mix it gently. Cover the plate with sealer we provided. Incubate for 120 minutes at 37°C.
2.
Remove the liquid from each well, don't wash. Add 100µL of Detection Reagent A working solution to each well. Cover with the Plate sealer. Gently tap the plate to ensure thorough mixing. Incubate for 1 hour at 37°C. Note: if Detection Reagent A appears cloudy warm to room temperature until solution is uniform.
3.
Aspirate each well and wash, repeating the process three times. Wash by filling each well with Wash Buffer (approximately 400µL) (a squirt bottle, multi-channel pipette,manifold dispenser or automated washer are needed). Complete removal of liquid at each step is essential. After the last wash, completely remove remaining Wash Buffer by aspirating or decanting. Invert the plate and pat it against thick clean absorbent paper.
4.
Add 100µL of Detection Reagent B working solution to each well. Cover with the Plate sealer. Incubate for 60 minutes at 37°C.
5.
Repeat the wash process for five times as conducted in step 3.
6.
Add 90µL of Substrate Solution to each well. Cover with a new Plate sealer and incubate for 10-20 minutes at 37°C. Protect the plate from light. The reaction time can be shortened or extended according to the actual color change, but this should not exceed more than 30 minutes. When apparent gradient appears in standard wells, user should terminatethe reaction.
7.
Add 50µL of Stop Solution to each well. If color change does not appear uniform, gently tap the plate to ensure thorough mixing.
8.
Determine the optical density (OD value) of each well at once, using a micro-plate reader set to 450 nm. User should open the micro-plate reader in advance, preheat the instrument, and set the testing parameters.
9.
After experiment, store all reagents according to the specified storage temperature respectively until their expiry.
When carrying out an ELISA assay it is important to prepare your samples in order to achieve the best possible results. Below we have a list of procedures for the preparation of samples for different sample types.
Sample Type
Protocol
Serum
If using serum separator tubes, allow samples to clot for 30 minutes at room temperature. Centrifuge for 10 minutes at 1,000x g. Collect the serum fraction and assay promptly or aliquot and store the samples at -80°C. Avoid multiple freeze-thaw cycles. If serum separator tubes are not being used, allow samples to clot overnight at 2-8°C. Centrifuge for 10 minutes at 1,000x g. Remove serum and assay promptly or aliquot and store the samples at -80°C. Avoid multiple freeze-thaw cycles.
Plasma
Collect plasma using EDTA or heparin as an anticoagulant. Centrifuge samples at 4°C for 15 mins at 1000 × g within 30 mins of collection. Collect the plasma fraction and assay promptly or aliquot and store the samples at -80°C. Avoid multiple freeze-thaw cycles. Note: Over haemolysed samples are not suitable for use with this kit.
Urine & Cerebrospinal Fluid
Collect the urine (mid-stream) in a sterile container, centrifuge for 20 mins at 2000-3000 rpm. Remove supernatant and assay immediately. If any precipitation is detected, repeat the centrifugation step. A similar protocol can be used for cerebrospinal fluid.
Cell culture supernatant
Collect the cell culture media by pipette, followed by centrifugation at 4°C for 20 mins at 1500 rpm. Collect the clear supernatant and assay immediately.
Cell lysates
Solubilize cells in lysis buffer and allow to sit on ice for 30 minutes. Centrifuge tubes at 14,000 x g for 5 minutes to remove insoluble material. Aliquot the supernatant into a new tube and discard the remaining whole cell extract. Quantify total protein concentration using a total protein assay. Assay immediately or aliquot and store at ≤ -20 °C.
Tissue homogenates
The preparation of tissue homogenates will vary depending upon tissue type. Rinse tissue with 1X PBS to remove excess blood & homogenize in 20ml of 1X PBS (including protease inhibitors) and store overnight at ≤ -20°C. Two freeze-thaw cycles are required to break the cell membranes. To further disrupt the cell membranes you can sonicate the samples. Centrifuge homogenates for 5 mins at 5000xg. Remove the supernatant and assay immediately or aliquot and store at -20°C or -80°C.
Tissue lysates
Rinse tissue with PBS, cut into 1-2 mm pieces, and homogenize with a tissue homogenizer in PBS. Add an equal volume of RIPA buffer containing protease inhibitors and lyse tissues at room temperature for 30 minutes with gentle agitation. Centrifuge to remove debris. Quantify total protein concentration using a total protein assay. Assay immediately or aliquot and store at ≤ -20 °C.
Breast Milk
Collect milk samples and centrifuge at 10,000 x g for 60 min at 4°C. Aliquot the supernatant and assay. For long term use, store samples at -80°C. Minimize freeze/thaw cycles.
