Product Details

Uniprot No.

Target Names

Alternative Names

Ribosomal protein S6 kinase beta-1 (S6K-beta-1) (S6K1) (EC 2.7.11.1) (70 kDa ribosomal protein S6 kinase 1) (P70S6K1) (p70-S6K 1) (Ribosomal protein S6 kinase I) (Serine/threonine-protein kinase 14A) (p70 ribosomal S6 kinase alpha) (p70 S6 kinase alpha) (p70 S6K-alpha) (p70 S6KA), RPS6KB1, STK14A

Species Reactivity

Human

Immunogen

A synthesized peptide derived from human P70 S6 Kinase alpha

Immunogen Species

Homo sapiens (Human)

Conjugate

Non-conjugated

Clonality

Monoclonal

Isotype

Rabbit IgG

Clone No.

7D4

Purification Method

Affinity-chromatography

Concentration

It differs from different batches. Please contact us to confirm it.

Buffer

Rabbit IgG in 10mM phosphate buffered saline , pH 7.4, 150mM sodium chloride, 0.05% BSA, 0.02% sodium azide and 50% glycerol.

Form

Liquid

Tested Applications

ELISA, IF

Recommended Dilution

Application	Recommended Dilution
IF	1:20-1:200

Protocols

ELISA Protocol
Immunofluorescence (IF) Protocol

Troubleshooting and FAQs

Antibody FAQs

Storage

Upon receipt, store at -20°C or -80°C. Avoid repeated freeze.

Lead Time

Basically, we can dispatch the products out in 1-3 working days after receiving your orders. Delivery time maybe differs from different purchasing way or location, please kindly consult your local distributors for specific delivery time.

Description

RPS6KB1, commonly known as p70 S6 kinase alpha, serves as a critical downstream effector of the mTOR signaling pathway, directly phosphorylating ribosomal protein S6 to regulate protein synthesis, cell growth, and proliferation. This serine/threonine kinase has become an essential research target for investigators studying metabolic regulation, autophagy, and the dysregulated growth signaling characteristic of many cancers.

This recombinant monoclonal antibody, clone 7D4, offers the reproducibility that demanding signaling studies require. Generated through recombinant technology with a defined sequence, it eliminates the lot-to-lot variability that can compromise longitudinal experiments or multi-site collaborations. The rabbit host and monoclonal nature ensure high specificity for human RPS6KB1, with the antibody raised against a synthetic peptide derived from the human protein sequence.

Validation through immunofluorescence microscopy demonstrates clear detection of RPS6KB1 in HeLa cells, with effective staining achieved at 1:50 dilution using standard fixation and permeabilization protocols. The antibody performs well with FITC-conjugated secondary detection systems, making it compatible with common fluorescence microscopy setups. Additional validation for ELISA applications provides flexibility for researchers requiring quantitative approaches alongside imaging studies.

Supplied in a stabilized liquid format with glycerol for convenient long-term storage at -20°C or -80°C, this antibody arrives ready for immediate use without reconstitution. The affinity-purified preparation in phosphate-buffered saline ensures minimal background in sensitive applications. Whether investigating mTOR pathway dynamics, characterizing metabolic reprogramming in disease models, or exploring the intersection of growth signaling and epigenetic regulation, this antibody provides a reliable tool for advancing your research.

Usage

For Research Use Only. Not for use in diagnostic or therapeutic procedures.

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Target Background

Function

Serine/threonine-protein kinase that acts downstream of mTOR signaling in response to growth factors and nutrients to promote cell proliferation, cell growth and cell cycle progression. Regulates protein synthesis through phosphorylation of EIF4B, RPS6 and EEF2K, and contributes to cell survival by repressing the pro-apoptotic function of BAD. Under conditions of nutrient depletion, the inactive form associates with the EIF3 translation initiation complex. Upon mitogenic stimulation, phosphorylation by the mammalian target of rapamycin complex 1 (mTORC1) leads to dissociation from the EIF3 complex and activation. The active form then phosphorylates and activates several substrates in the pre-initiation complex, including the EIF2B complex and the cap-binding complex component EIF4B. Also controls translation initiation by phosphorylating a negative regulator of EIF4A, PDCD4, targeting it for ubiquitination and subsequent proteolysis. Promotes initiation of the pioneer round of protein synthesis by phosphorylating POLDIP3/SKAR. In response to IGF1, activates translation elongation by phosphorylating EEF2 kinase (EEF2K), which leads to its inhibition and thus activation of EEF2. Also plays a role in feedback regulation of mTORC2 by mTORC1 by phosphorylating RICTOR, resulting in the inhibition of mTORC2 and AKT1 signaling. Mediates cell survival by phosphorylating the pro-apoptotic protein BAD and suppressing its pro-apoptotic function. Phosphorylates mitochondrial URI1 leading to dissociation of a URI1-PPP1CC complex. The free mitochondrial PPP1CC can then dephosphorylate RPS6KB1 at Thr-412, which is proposed to be a negative feedback mechanism for the RPS6KB1 anti-apoptotic function. Mediates TNF-alpha-induced insulin resistance by phosphorylating IRS1 at multiple serine residues, resulting in accelerated degradation of IRS1. In cells lacking functional TSC1-2 complex, constitutively phosphorylates and inhibits GSK3B. May be involved in cytoskeletal rearrangement through binding to neurabin. Phosphorylates and activates the pyrimidine biosynthesis enzyme CAD, downstream of MTOR. Following activation by mTORC1, phosphorylates EPRS and thereby plays a key role in fatty acid uptake by adipocytes and also most probably in interferon-gamma-induced translation inhibition.

Gene References into Functions

Expression of miRNAs Targeting mTOR and S6K1 Genes of mTOR Signaling Pathway Including miR-96, miR-557, and miR-3182 in Triple-Negative Breast Cancer PMID: 29862445
Studied human ribosomal protein S6 kinase B1 ribosomal protein (p70S6K) expression in pterygium and in normal conjunctival tissues, results show p70S6K activation promotes the transdifferentiation of pterygium fibroblasts to myofibroblasts. PMID: 29270715
Akt and p70S6K signaling pathway was highly activated in estrogen receptor-negative (ER-) premalignant breast lesions and ER(-) breast cancer. In addition, p70S6K activation induced transformation of ER(-) human mammary epithelial cells (hMEC). PMID: 28877935
ADAR1 contributes to gastric cancer development and progression via activating mTOR/p70S6K/S6 ribosomal protein signaling axis. PMID: 27863387
PICT-1 triggers pro-death autophagy through inhibition of rRNA transcription and the inactivation of AKT/mTOR/p70S6K pathway in glioblastoma cells. PMID: 27729611
Study found that p70S6K1 plays an important role in gemcitabine chemoresistence. MiR-145 is a tumor suppressor which directly targets p70S6K1 for inhibiting its expression in pancreatic adenocarcinoma. PMID: 27765914
These findings suggested that fenofibrate indeed significantly inhibited the proliferation of PC-3cells via apoptotic action, which is associated with the inactivation of the mTOR/p70S6K-dependent cell survival pathway. PMID: 29305864
modulation of rDNA transcription initiation, elongation and rRNA processing is an immediate, co-regulated response to altered amino acid abundance, dependent on both mTORC1 activation of S6K1 and MYC activity PMID: 27385002
In summary, our data suggested that PYK2 via S6K1 activation modulated AR function and growth properties in prostate cancer cells. Thus, PYK2 and S6K1 may potentially serve as therapeutic targets for PCa treatment. PMID: 27492635
Modulation of IL-2, IL-4, IFN-gamma and/or TNF-alpha levels, or inhibitors of Erk1/2 or S6K1 may be a new approach to prevent BAFF-induced aggressive B-cell malignancies. PMID: 27235588
Overexpression of AIM2 in hepatocellular carcinoma (HCC) cells suppressed mammalian target of rapamycin (mTOR)-S6K1 pathway and further inhibited proliferation of HCC cells. PMID: 27167192
Data show that ribosomal protein S6 kinases, 70-kDa (p70S6K) and interleukin-6 (IL-6) were upregulated in high-metastatic head and neck squamous cell carcinoma (HNSCC) cell lines that underwent epithelial-mesenchymal transition (EMT) when compared to paired low-metastatic cell lines. PMID: 27174914
S6K plays a critical role in dopaminergic neuronal differentiation in human neural stem cells. PMID: 26143260
Elevated levels of p-Mnk1, p-eIF4E and p-p70S6K proteins are associated with tumor recurrence and poor prognosis in astrocytomas. Overexpression of p-eIF4E and co-expression of p-Mnk1, p-eIF4E and p-p70S6K proteins could be used as novel independent poor prognostic biomarkers for patients with astrocytomas. PMID: 27900644
ULK1 has a role in RPS6KB1-NCOR1 repression of NR1H/LXR-mediated Scd1 transcription and augments lipotoxicity in hepatic cells PMID: 27846372
function mimicked by the viral protein kinase encoded by open reading frame 36 of Kaposi's sarcoma-associated herpesvirus PMID: 27342859
our data suggest that RPS6KB1 is over-activated as p-RPS6KB1 in non-small cell lung cancer, rather than just the total protein overexpressing. The phosphorylation level of RPS6KB1 might be used as a novel prognostic marker for NSCLC patients. PMID: 28792981
p54-S6K2 interactome is predominant to the nucleus, whereas p70-S6K1 is predominant to cytosol. PMID: 27493124
S6K1 is involved in the regulation of mitochondria morphology and function in HeLa cells. PMID: 27634387
S6K1 acts through multiple targets of the mTOR pathway to promote self-renewal and leukemia progression PMID: 27294524
S6K1 is a promising tumor-specific target for the enhancement of NSCLC radiosensitivity and its effects may be mediated by increased expression of PDCD4. PMID: 28276898
Spheroids showed relative lower activities in the AKT, mammalian target of rapamycin (mTOR) and S6K (also known as RPS6KB1) signaling pathway compared to cells cultured in two dimensions. PMID: 27663511
S6K1 phosphorylation of H2B mediates EZH2 trimethylation of H3 early in adipogenesis, contributing to the promotion of obesity. PMID: 27151441
Findings indicate that similar to overall cell size growth, Golgi growth is modulated by the "cell growth checkpoint" at late G1 phase through the activities of S6 kinase 1 (S6K1). PMID: 27325676
these findings suggest that activation of S6K1 in an adjuvant trastuzumab setting may represent a reliable early tumor marker predicting patient response to trastuzumab, allowing clinicians to further stratify patients for personalized and effective therapy. PMID: 27993682
Data indicate YAP1 as a candidate marker to predict cell lines that were most sensitive to MSC2363318A, suggesting clinical development of a dual AKT/P70S6K inhibitor. PMID: 28376174
RPS6KB1 single nucleotide polymorphism association with colorectal cancer patients survival PMID: 28138309
These data suggest that S6K1-mediated PIPKIgamma90 phosphorylation regulates cell migration and invasion by controlling PIPKIgamma90 degradation. PMID: 27780861
Notch3 and pS6 are significantly related to ovarian epithelial cancer development and prognosis, and their combination represents a potential biomarker and therapeutic target in ovarian tumor angiogenesis. PMID: 27445438
Taken together, our data provide the first evidence that FXR suppresses proliferation of human liver cancer cells via the inhibition of the mTOR/S6K signaling pathway. FXR expression can be used as a biomarker of personalized mTOR inhibitor treatment assessment for liver cancer patients. PMID: 27109477
These results indicated that p-p70S6K may participate in the invasion and metastasis in the development of ESCC and downregulation of the expression of p-p70S6K could improve the sensitivity of cells to rapamycin in ESCC. PMID: 27595116
RPS6KB1 SNPs associated with susceptibility to multiple sclerosis in Iranian population. PMID: 28079472
We found that S6K1 Iso-2 overexpression in cancer cells promoted cell growth and inhibited apoptosis, denotes its important role on NSCLC survival. PMID: 27460085
S6K phosphorylation via the PI3K-PD1 pathway is involved in tau pathology in neurofibrillary tangles and abnormal neurites as well as actin pathology in Hirano bodies. PMID: 26582459
These results indicate that the inhibitory effect of rapamycin may be due mainly to increased p14, p15, and p57 expression via promoter demethylation and decreased mTOR and p70S6K expression in ALL cell lines. PMID: 26362858
The newly identified miR-195-RPS6KB1 axis partially illustrates the molecular mechanism of prostate cancer progression and represents a novel potential therapeutic target for prostate cancer treatment. PMID: 26080838
eIF3 has a role in controlling cell size independently of S6K1-activity PMID: 26172298
MiR-497 decreases cisplatin resistance in ovarian cancer cells by targeting mTOR/P70S6K1. PMID: 26238185
This study report that protein levels of the p70 S6 kinase was increased in Progressive Supranuclear Palsy and Corticobasal Degeneration brains. PMID: 26818518
Collectively, our findings suggested that both in vitro and in vivo differentiation of Th17 cells were positively regulated by p70(S6K1) PMID: 26514620
Our results suggest that silencing of AT1R inhibits EMT induced by HG in HK-2 cells via inactivation of mTOR/p70S6K signaling pathway. PMID: 26626074
Results suggest that blocking both the mTOR kinase downstream targets 4E-BP1 protein and p70 S6 kinase 1, but not p70 S6 kinase 1 alone, prevents the migration of retinal pigment epithelium (RPE) cells. PMID: 26427479
Our study indicated that Microcystin-LR exposure promoted HL7702 cell proliferation and the main mechanism was the activation of Akt/S6K1 cascade. PMID: 26506538
This is the first study highlighting the activation of S6K1 by palmitic acid as a common and novel mechanism by which its inhibition by oleic acid prevents endoplasmic reticulum stress, lipoapoptosis and insulin resistance in hepatocytes. PMID: 25846498
These data suggest that S6K1 may represent a molecular link between aging and Alzheimer disease. PMID: 26468204
The increased level of S6K1 is positively associated with obesity, insulin resistance and inflammation. PMID: 25118997
mTORC1 regulates cell adhesion through S6K1 and 4E-BP1 pathways, but mTORC2 regulates cell adhesion via Akt-independent mechanism PMID: 25762619
pS6 expression is associated with the characteristics of a high Ki-67 subset in ER+ and HER2- breast cancer whose proliferation seemed to be affected by activation possibly of the mTOR/S6 pathway. PMID: 25600244
Data show that leucine alone stimulates mTORC1 signaling and ribosomal protein s6 kinase 1 (S6K1) phosphorylation. PMID: 26169935
Inactivated Sendai virus induces apoptosis and autophagy via the PI3K/Akt/mTOR/p70S6K pathway in human non-small cell lung cancer cells. PMID: 26235873

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Subcellular Location

Cell junction, synapse, synaptosome. Mitochondrion outer membrane. Mitochondrion. Note=Colocalizes with URI1 at mitochondrion.; [Isoform Alpha I]: Nucleus. Cytoplasm.; [Isoform Alpha II]: Cytoplasm.

Protein Families

Protein kinase superfamily, AGC Ser/Thr protein kinase family, S6 kinase subfamily

Tissue Specificity

Widely expressed.

Database Links

HGNC: 10436

OMIM: 608938

KEGG: hsa:6198

STRING: 9606.ENSP00000225577

UniGene: Hs.463642

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Code	CSB-RA299200A0HU
Size	US$210
	Order now
Image	Immunofluorescence staining of Hela Cells with CSB-RA299200A0HU at 1:50, counter-stained with DAPI. The cells were fixed in 4% formaldehyde, permeated by 0.2% TritonX-100, and blocked in 10% normal Goat Serum. The cells were then incubated with the antibody overnight at 4℃. Nuclear DNA was labeled in blue with DAPI. The secondary antibody was FITC-conjugated AffiniPure Goat Anti-Rabbit IgG (H+L).
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RPS6KB1 Recombinant Monoclonal Antibody

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Target Background