Cat. No.: HY-P80836

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Phospho-MSK1 (Ser376) Antibody (YA172)

Name: Phospho-MSK1 (Ser376) Antibody (YA172)
Brand: MedChemExpress
SKU: HY-P80836
Price: 94.00 USD
Availability: InStock
Rating: 5 (1 reviews)

(Synonyms: RPS6KA5; MSK1; Ribosomal protein S6 kinase alpha-5; S6K-alpha-5; 90 kDa ribosomal protein S6 kinase 5; Nuclear mitogen- and stress-activated protein kinase 1; RSK-like protein kinase; RSKL)

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Based on 1 Customer Validation

Phospho-MSK1 (Ser376) Antibody (YA172) is a Rabbit-derived and non-conjugated IgG monoclonal antibody, targeting to Phospho-MSK1 (Ser376).

For research use only. We do not sell to patients.

Host:
Rabbit
Isotype:
IgG
Application:
WB, IHC-P, IP
Reactivity :
Human, Rat

Formulation:
Supplied in 50 mM Tris-Glycine (pH 7.4), 0.15 M NaCl, 40% Glycerol and 0.05% BSA. Preservative: 0.01% Sodium azide

Conjugation:
Non-conjugated

ALL WB IHC-P mIHC

Size

Price

Stock

Quantity

Amount: USD 0.00

* Please select Quantity before adding items.

Top Publications Citing

Use of MCE Products

Fluorescent Dye

Strong Fluorescence Signal / Multi-Disciplinary Applications / High Fluorescence Specificity

Applications
Product Details
Product Properties
- Appearance
- Formulation
- Concentration
- Storage & Stability
- Shipping
Verification Images
Background
Documentation
References
Help & FAQs
Classifications
Bioz

Applications

Application	WB WB: Western Blot	IHC-P IHC-P: Immunohistochemistry-Paraffin	IP IP: Immunoprecipitation
Dilution Ratio	1:500-1:1000	1:50-1:100	1:20

Product Details

Description

Phospho-MSK1 (Ser376) Antibody (YA172) is a Rabbit-derived and non-conjugated IgG monoclonal antibody, targeting to Phospho-MSK1 (Ser376).

Host Rabbit
Clonality Recombinant,Monoclonal
Species Reactivity
Human, Rat
Observed Molecular Weight

Observed band size: 90 kDa

Note: Due to possible protein modifications or aggregation, the molecular weight should be confirmed by actual measurement, and the predicted value is for reference only.
Calculated Molecular Weight Predicted band size: 90 kDa

Species Reactivity Database

Entrez Gene: 9252 Human ; 314384 Rat

SwissProt: O75582 Human ;

OMIM: 603607 Human

Immunogen

Synthetic phosphopeptide corresponding to residues surrounding Ser376 of Human MSK1.The exact sequence is proprietary to MCE.

Sensitivity

Endogenous

Purification

affinity purified

Conjugation

Non-conjugated

Modification

Phosphorylated

Isotype

IgG

RRID

AB_3102980

Product Properties

Appearance

Solution
Formulation

Supplied in 50 mM Tris-Glycine (pH 7.4), 0.15 M NaCl, 40% Glycerol and 0.05% BSA. Preservative: 0.01% Sodium azide
Concentration

Batch-dependent, Please check the COA for the concentration of each lot. Check Lot Concentration
Storage & Stability

Stored at -20°C for 1 year. Avoid repeated freeze / thaw cycles.
Shipping

Shipping with blue ice.

Verification Images

Western blot analysis was performed on extracts from K562+EGF (lane 1, 15 μg) and Rat brain (lane 2, 15 μg) using Phospho-MSK1 (Ser376) Rabbit mAb.Proteins were transferred to a PVDF membrane and blocked with 5% non-fat milk in TBST at 4°C overnight.The primary antibody (1:1000 dilution) and the loading control antibody (beta-Actin, HY-P80438, 1:20000 dilution) were incubated in 5% non-fat milk in TBST for 1 hour at 37°C.Goat Anti-Rabbit IgG-HRP Secondary Antibody (1:20000 dilution) was then applied for 40 minutes at 37°C.
Immunohistochemical analysis of paraffin-embedded human Breast Cancer tissue using Phospho-MSK1 antibody was performed. The section was pretreated using high-temperature and high-pressure mediated EDTA antigen retrieval buffer (pH 9.0), for 5 minutes. The tissues were incubated with primary antibody (HY-P80836, 1:100 dilution) at room temperature for 60 minutes. Detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. The tissues were counterstained with hematoxylin and mounted with neutral balsam mounting medium.
Immunohistochemical analysis of paraffin-embedded human Ovarian Cancer tissue using Phospho-MSK1 antibody was performed. The section was pretreated using high-temperature and high-pressure mediated EDTA antigen retrieval buffer (pH 9.0), for 5 minutes. The tissues were incubated with primary antibody (HY-P80836, 1:100 dilution) at room temperature for 60 minutes. Detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. The tissues were counterstained with hematoxylin and mounted with neutral balsam mounting medium.
Immunohistochemical analysis of paraffin-embedded human Colon cancer‌ tissue using Phospho-MSK1 antibody was performed. The section was pretreated using high-temperature and high-pressure mediated EDTA antigen retrieval buffer (pH 9.0), for 5 minutes. The tissues were incubated with primary antibody (HY-P80836, 1:100 dilution) at room temperature for 60 minutes. Detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. The tissues were counterstained with hematoxylin and mounted with neutral balsam mounting medium.
Immunohistochemical analysis of paraffin-embedded human Colon cancer‌ tissue using Phospho-MSK1 antibody was performed. The section was pretreated using high-temperature and high-pressure mediated EDTA antigen retrieval buffer (pH 9.0), for 5 minutes. The tissues were incubated with primary antibody (HY-P80836, 1:100 dilution) at room temperature for 60 minutes. Detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. The tissues were counterstained with hematoxylin and mounted with neutral balsam mounting medium.
Immunohistochemical analysis of paraffin-embedded human Placenta tissue using Phospho-MSK1 antibody was performed. The section was pretreated using high-temperature and high-pressure mediated EDTA antigen retrieval buffer (pH 9.0), for 5 minutes. The tissues were incubated with primary antibody (HY-P80836, 1:100 dilution) at room temperature for 60 minutes. Detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. The tissues were counterstained with hematoxylin and mounted with neutral balsam mounting medium.
Immunohistochemical analysis of paraffin-embedded human Placenta tissue using Phospho-MSK1 antibody was performed. The section was pretreated using high-temperature and high-pressure mediated EDTA antigen retrieval buffer (pH 9.0), for 5 minutes. The tissues were incubated with primary antibody (HY-P80836, 1:100 dilution) at room temperature for 60 minutes. Detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. The tissues were counterstained with hematoxylin and mounted with neutral balsam mounting medium.
Immunohistochemical analysis of paraffin-embedded human cholangiocarcinoma tissue using Phospho-MSK1 antibody was performed. The section was pretreated using high-temperature and high-pressure mediated EDTA antigen retrieval buffer (pH 9.0), for 5 minutes. The tissues were incubated with primary antibody (HY-P80836, 1:100 dilution) at room temperature for 60 minutes. Detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. The tissues were counterstained with hematoxylin and mounted with neutral balsam mounting medium.
Immunohistochemical analysis of paraffin-embedded human Gastric Cancer tissue using Phospho-MSK1 antibody was performed. The section was pretreated using high-temperature and high-pressure mediated EDTA antigen retrieval buffer (pH 9.0), for 5 minutes. The tissues were incubated with primary antibody (HY-P80836, 1:100 dilution) at room temperature for 60 minutes. Detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. The tissues were counterstained with hematoxylin and mounted with neutral balsam mounting medium.
Tyramide signaling amplification based immunofluorescence was performed on paraffin-embedded human Colon cancer‌ tissue using Phospho-MSK1 (Ser376) antibody. Antigen retrieval was performed in EDTA buffer pH 9.0 (95 °C, 20 min) followed by cooling to RT. Then incubated with primary antibody (HY-P80836, 1:100 dilution) at room temperature for 60 minutes and HRP conjugated secondary antibody for 10 minutes. Fluorescence was then developed with Vari Fluor 532 TSA (200×)（HY-D1832）. The tissues were counterstained with DAPI and mounted with Anti-fade mounting medium.
Tyramide signaling amplification based immunofluorescence was performed on paraffin-embedded human Colon cancer‌ tissue using Phospho-MSK1 (Ser376) antibody. Antigen retrieval was performed in EDTA buffer pH 9.0 (95 °C, 20 min) followed by cooling to RT. Then incubated with primary antibody (HY-P80836, 1:100 dilution) at room temperature for 60 minutes and HRP conjugated secondary antibody for 10 minutes. Fluorescence was then developed with Vari Fluor 532 TSA (200×)（HY-D1832）. The tissues were counterstained with DAPI and mounted with Anti-fade mounting medium.
Tyramide signaling amplification based immunofluorescence was performed on paraffin-embedded human Colon cancer‌ tissue using Phospho-MSK1 (Ser376) antibody. Antigen retrieval was performed in EDTA buffer pH 9.0 (95 °C, 20 min) followed by cooling to RT. Then incubated with primary antibody (HY-P80836, 1:100 dilution) at room temperature for 60 minutes and HRP conjugated secondary antibody for 10 minutes. Fluorescence was then developed with Vari Fluor 532 TSA (200×)（HY-D1832）. The tissues were counterstained with DAPI and mounted with Anti-fade mounting medium.
Tyramide signaling amplification based immunofluorescence was performed on paraffin-embedded human ovarian carcinoma tissue using Phospho-MSK1 (Ser376) antibody. Antigen retrieval was performed in EDTA buffer pH 9.0 (95 °C, 20 min) followed by cooling to RT. Then incubated with primary antibody (HY-P80836, 1:100 dilution) at room temperature for 60 minutes and HRP conjugated secondary antibody for 10 minutes. Fluorescence was then developed with Vari Fluor 532 TSA (200×)（HY-D1832）. The tissues were counterstained with DAPI and mounted with Anti-fade mounting medium.
Tyramide signaling amplification based immunofluorescence was performed on paraffin-embedded human ovarian carcinoma tissue using Phospho-MSK1 (Ser376) antibody. Antigen retrieval was performed in EDTA buffer pH 9.0 (95 °C, 20 min) followed by cooling to RT. Then incubated with primary antibody (HY-P80836, 1:100 dilution) at room temperature for 60 minutes and HRP conjugated secondary antibody for 10 minutes. Fluorescence was then developed with Vari Fluor 532 TSA (200×)（HY-D1832）. The tissues were counterstained with DAPI and mounted with Anti-fade mounting medium.
Tyramide signaling amplification based immunofluorescence was performed on paraffin-embedded human ovarian carcinoma tissue using Phospho-MSK1 (Ser376) antibody. Antigen retrieval was performed in EDTA buffer pH 9.0 (95 °C, 20 min) followed by cooling to RT. Then incubated with primary antibody (HY-P80836, 1:100 dilution) at room temperature for 60 minutes and HRP conjugated secondary antibody for 10 minutes. Fluorescence was then developed with Vari Fluor 532 TSA (200×)（HY-D1832）. The tissues were counterstained with DAPI and mounted with Anti-fade mounting medium.

Background

Function

MSK1 (mitogen- and stress-activated protein kinase 1) is a predominantly nuclear serine/threonine kinase that functions downstream of the ERK1/2 and p38 MAPK pathways, integrating mitogenic and stress signals into transcriptional responses through phosphorylation-dependent activation mechanisms^[1]^[2]. MSK1 regulates gene expression by phosphorylating key nuclear substrates, including CREB, ATF1, and histone H3, thereby controlling immediate-early gene induction and chromatin-associated transcriptional programs^[2]^[3]. Mechanistically, activation of upstream MAPKs promotes sequential phosphorylation and autophosphorylation events within MSK1, enabling its N-terminal kinase domain to phosphorylate downstream targets involved in stimulus-responsive gene regulation^[1]^[2]. In disease-relevant systems, MSK1 contributes to anti-inflammatory transcriptional networks, regulates cytokine expression, and participates in neuronal proliferation, synaptic plasticity, and neurogenesis-related processes^[2]. MSK1 also functions as a chromatin-associated transcriptional coactivator, directly interacting with p53 and promoting p21 gene expression through p53-dependent histone H3 phosphorylation at target promoters^[3]. Compared with the closely related isoform MSK2, MSK1 shares substantial functional overlap and is often considered functionally redundant in many MAPK-dependent signaling contexts, although isoform-specific expression patterns and experimental models continue to support investigation of distinct biological contributions^[2]. For experimental applications, pharmacological inhibitors such as H89 and dimethylfumarate have been used to suppress MSK1/MSK2 signaling and evaluate downstream transcriptional and inflammatory responses in cellular and disease models^[2].
Subcellular Localization

Nucleus; Cytoplasm
Expression

Tissue_specificity:It is widely expressed in the heart, brain, and placenta, at high levels. It is present in lower levels in the lungs, kidneys, and liver.
Isoforms & Post-Translational Modification

O75582 has 3 isomers: O75582-1: 89865 Da (predicted); O75582-2: 61769 Da (predicted); O75582-3: 81780 Da (predicted).
Ser-376 and Thr-581 phosphorylation is required for kinase activity. Ser-376 and Ser-212 are autophosphorylated by the C-terminal kinase domain, and their phosphorylation is essential for the catalytic activity of the N-terminal kinase domain. Phosphorylated at Ser-360, Thr-581 and Thr-700 by MAPK1/ERK2, MAPK3/ERK1 and MAPK14/p38-alpha. Autophosphorylated at Ser-750, Ser-752 and Ser-758 by the N-terminal kinase domain;Ubiquitinated
Subunit

Forms a complex with either MAPK1/ERK2 or MAPK3/ERK1 in quiescent cells which transiently dissociates following mitogenic stimulation. Also associates with MAPK14/p38-alpha. Activated RPS6KA5 associates with and phosphorylates the NF-kappa-B p65 subunit RELA. Interacts with CREBBP and EP300
SwissProt ID

O75582
Gene ID

9252 [NCBI]
Synonyms

RPS6KA5; MSK1; Ribosomal protein S6 kinase alpha-5; S6K-alpha-5; 90 kDa ribosomal protein S6 kinase 5; Nuclear mitogen- and stress-activated protein kinase 1; RSK-like protein kinase; RSKL
Research Field

Signal Transduction