Show Order Info
Pack Size:100μg/vial
Validated Species:Human, Mouse, Rat
Data & Images


Product Name Anti-Rb2 p130 Antibody
SKU/Catalog Number PA1895
Description Rabbit IgG polyclonal antibody for Retinoblastoma-like protein 2(RBL2) detection. Tested with WB in Human;Mouse;Rat.
Cite This Product Anti-Rb2 p130 Antibody (Boster Biological Technology, Pleasanton CA, USA, Catalog # PA1895)
Replacement Item This antibody may replace the following items: sc-16299|sc-16299-R|sc-16300|sc-16300-R|sc-16301|sc-16301-R|sc-169028|sc-20678|sc-22157|sc-22157-R|sc-31338|sc-31339|sc-317|sc-317-G|sc-317-X|sc-365163|sc-365163-X|sc-374521|sc-53641|sc-56176|sc-9963 from Santa Cruz Biotechnology.
Host Rabbit
Isotype N/A
Validated Species Human, Mouse, Rat
Predicted Species Hamster

*This antibody is predicted to react with the above species based on antigen sequence similarities. Our Boster Guarantee covers the use of this product with the above species.

Application WB

*Our Boster Guarantee covers the use of this product in the above tested applications.

**For positive and negative control design, consult "Tissue specificity" under Protein Target Info.

Recommended Detection Systems Boster recommends Enhanced Chemiluminescent Kit with anti-Rabbit IgG (EK1002) for Western blot.
*Blocking peptide can be purchased at $50. Contact us for more information
**Boster also offers various secondary antibodies for Immunoflourescecne and IHC. Take advantage of the buy 1 primary antibody get 1 secondary antibody for free promotion for the entire year 2018!
Immunogen A synthetic peptide corresponding to a sequence at the C-terminus of human Rb2 p130(1120-1139aa ENHSALLRRLQDVANDRGSH), identical to the related rat sequence and different from the related mouse sequence by one amino acid.
Cross Reactivity No cross reactivity with other proteins
Pack Size 100μg/vial


Clonality Polyclonal
Form Lyophilized
Contents Each vial contains 5mg BSA, 0.9mg NaCl, 0.2mg Na2HPO4, 0.05mg Thimerosal, 0.05mg NaN3.
Concentration Add 0.2ml of distilled water will yield a concentration of 500ug/ml.
Storage At -20°C for one year. After reconstitution, at 4°C for one month. It can also be aliquotted and stored frozen at -20°C for a longer time.Avoid repeated freezing and thawing.
Purification Immunogen affinity purified.
Isotype N/A

Protein Target Info (Source:

You can check the tissue specificity below for information on selecting positive and negative control.

Gene Name RBL2
Protein Name Retinoblastoma-like protein 2
Molecular Weight 128367 MW
Protein Function Key regulator of entry into cell division. Directly involved in heterochromatin formation by maintaining overall chromatin structure and, in particular, that of constitutive heterochromatin by stabilizing histone methylation. Recruits and targets histone methyltransferases SUV420H1 and SUV420H2, leading to epigenetic transcriptional repression. Controls histone H4 'Lys-20' trimethylation. Probably acts as a transcription repressor by recruiting chromatin-modifying enzymes to promoters. Potent inhibitor of E2F-mediated trans-activation, associates preferentially with E2F5. Binds to cyclins A and E. Binds to and may be involved in the transforming capacity of the adenovirus E1A protein. May act as a tumor suppressor.
Sequence Similarities Belongs to the retinoblastoma protein (RB) family.
Subcellular Localization Nucleus.
Uniprot ID Q08999
Alternative Names Retinoblastoma-like protein 2;130 kDa retinoblastoma-associated protein;p130;Retinoblastoma-related protein 2;RBR-2;pRb2;RBL2;RB2;
Research Areas |cell biology|cell cycle|cell cycle inhibitors| epigenetics and nuclear signaling| cancer|oncoproteins/suppressors|tumor suppressors|rb family|
*if product is indicated to react with multiple species, protein info is based on the human gene.

Background for Retinoblastoma-like protein 2

RBL2(Retinoblastoma-like protein 2) is a protein that in humans is encoded by the RBL2 gene. It is also known as Retionblastoma-related gene(RB2), P130. Yeung et al.(1993) mapped the RBL2 gene to human chromosome 16q12.2 and rat chromosome 19, using fluorescence in situ hybridization and somatic hybrid cell analysis, respectively. Based on known syntenic relationships among human, rat and mouse, the data suggested that the mouse homolog resides on chromosome 8. Deletions of chromosome 16q have been found in several human neoplasms, including breast, ovarian, hepatic, and prostate cancers, which supports the involvement of RB2 in human cancer as a tumor suppressor gene. Kong et al.(2006)found that RBL2 and RINT1 were essential for telomere length control in human fibroblasts, with loss of either protein leading to longer telomeres. Williams et al.(2006)found that mouse fibroblasts lacking Rb were less susceptible to an oncogenic HRAS allele than wildtype cells. In contrast, p107(RBL1;) -/- and p130 -/- fibroblasts were more susceptible to HRAS-mediated transformation than wildtype cells.

Anti-Rb2 p130 Antibody Images

Click the images to enlarge.

Anti-Rb2 p130 Antibody
Anti-Rb2 p130 antibody, PA1895, Western blotting
Lane 1: Rat Testis Tissue Lysate
Lane 2: NIH313 Cell Lysate
Write a review for PA1895

Customer Q&As

Q: Do you offer BSA-free antibodies? Keyword: Bovine serum albumin, carrier protein, conjugation
A: Yes, please contact us at for more information about BSA-free antibodies and availability. The new BSA-free formula uses trehalose as a replacement to BSA. We have tested many alternative chemicals and found that trehalose protects the antibodies the best.
Q: Is your western blot protocol provided from the website applicable for all your antibodies? Keyword: applications, WB
A: The protocol is applicable for all our antibodies in WB, the NC Membrane(0.45μm or 0.22μm) and transfer time(70 mins or 50 mins) depends on the protein molecular weight, details can be found in included protocol.
Q: Can I conjugate markers to this antibody? Can I link custom conjugates to this antibody? Keyword: conjugation
A: The antibody is stored with BSA and cannot be conjugated with markers. Carrier free antibodies are available upon request. Please contact
Q: What should I use for negative control?
A: Please contact us for negative control suggestions. You can also check expression databases such as genecards, uniprot etc. Due to logistic reasons, we do not sell serum or lysates that we use internally for positive or negative control.
Q: Where can I find troubleshooting information? What should I do if I have unexpected bands, high background, no signal, weak signal
A: You can find Boster's troubleshoot guides under tech support tab. Please contact us for further assistance on troubleshooting your experiment.
Q: What is the immunogen sequence of this antibody? Is this antibody polyclonal or monoclonal?
A: You can find the immunogen sequence under "Immunogen" and clonality in the product name.
Q: What is the expected band size? Why is it different than the observed band size?
A: The expected band size is predicted on the size of the protein. The actual band size may be affected by a few other factors including but not limited to:
1. Post-translational modification:phosphorylation, methylation, glycosylation etc. These modifications prevent SDS molecules from binding to the target protein and thus make the band size appear larger than expected
2. Post-translational cleavage: this can cause smaller bands and or multiple bands

3. Alternative splicing: the same gene can have alternative splicing patterns generating different size proteins, all with reactivities to the antibody.

4. Amino Acid R chain charge: SDS binds to positive charges. The different size and charge of the Amino Acid side chains can affect the amount of SDS binding and thus affect the observed band size.
5. Multimers: Multimers are usually broken up in reducing conditions. However if the interactions between the multimers are strong, the band may appear higher.,
Q: What is the suggested dilution ratio for Western Blot (WB), Immunohistochemistry (IHC) and or ELISA standards? What is the optimal pH for the sample?
A: Check the datasheet for the product for details on dilution ratios for different experiments. You can find the datasheet button on the right side of the product page.
Q: What is the protocol you used for your Western blotting (WB) and Immunohistochemistry (IHC)?
A: Check our protocols under the tech support tab.