HIF-2α mAb

Catalog No.: F1087

Lane 1: HeLa
Lane 2: HeLa (DFO, 0.5mM)

サイズ（液体）	価格(税別)	在庫状況
50uL	JPY 23500	国内在庫なし(納期7~10日)
100uL	JPY 35500	国内在庫なし(納期7~10日)
100uL*2	JPY 53500	お問い合わせ

代表番号: 045-509-1970\|電子メール：sales@selleck.co.jp よく尋ねられる質問

キーポイント

タンパク質の局在：细胞核。
WB
RIPA/Nuclear Lysis Buffer バッファーでのライセート調製を推奨します。

使用情報

Dilution
WB1:1000

Application
WB

Source
Mouse

Reactivity
Human, Rat

Storage Buffer
PBS, pH 7.2+50% Glycerol+0.05% BSA+0.01% NaN₃

Storage (from the date of receipt)
-20°C (avoid freeze-thaw cycles), 2 years

Predicted MW
96 kDa

ポジティブコントロール	HeLa (treated with DFO, 0.5 mM); A549 (hypoxic, normoxic)
ネガティブコントロール	HeLa

サンプル処理データの例

サンプル	処理状況
HeLa	DFO-treated (0.5 mM)
A549	hypoxic/normoxic
クリックして、さらに多くのサンプルデータを表示

^*異なるヒト由来細胞や組織における発現量の予測については、以下をご参照ください: http://www.proteinatlas.org

サンプル	処理状況

プロトコール

WB
Experimental Protocol: Sample preparation 1. Tissue: Lyse the tissue sample by adding an appropriate volume of ice-cold RIPA/Nuclear Lysis Buffer (containing Protease Inhibitor Cocktail)，and homogenize the tissue at a low temperature. 2. Adherent cell: Aspirate the culture medium and wash the cells with ice-cold PBS twice. Lyse the cells by adding an appropriate volume of RIPA/Nuclear Lysis Buffer (containing Protease Inhibitor Cocktail) and put the sample on ice for 5 min. 3. Suspension cell: Transfer the culture medium to a pre-cooled centrifuge tube. Centrifuge and aspirate the supernatant. Wash the cells with ice-cold PBS twice. Lyse the cells by adding an appropriate volume of RIPA/Nuclear Lysis Buffer (containing Protease Inhibitor Cocktail) and put the sample on ice for 5 min. 4. Place the lysate into a pre-cooled microcentrifuge tube. Centrifuge at 4°C for 15 min. Collect the supernatant; 5. Remove a small volume of lysate to determine the protein concentration; 6. Combine the lysate with protein loading buffer. Boil 20 µL sample under 95-100°C for 5 min. Centrifuge for 5 min after cool down on ice. Electrophoretic separation 1. According to the concentration of extracted protein, load appropriate amount of protein sample and marker onto SDS-PAGE gels for electrophoresis. Recommended separating gel (lower gel) concentration: 10%. Reference Table for Selecting SDS-PAGE Separation Gel Concentrations 2. Power up 80V for 30 minutes. Then the power supply is adjusted (110 V~150 V), the Marker is observed, and the electrophoresis can be stopped when the indicator band of the predyed protein Marker where the protein is located is properly separated. (Note that the current should not be too large when electrophoresis, too large current (more than 150 mA) will cause the temperature to rise, affecting the result of running glue. If high currents cannot be avoided, an ice bath can be used to cool the bath.) Transfer membrane 1. Take out the converter, soak the clip and consumables in the pre-cooled converter; 2. Activate PVDF membrane with methanol for 1 min and rinse with transfer buffer; 3. Install it in the order of "black edge of clip - sponge - filter paper - filter paper - glue -PVDF membrane - filter paper - filter paper - sponge - white edge of clip"; 4. The protein was electrotransferred to PVDF membrane. ( 0.45 µm PVDF membrane is recommended ) Reference Table for Selecting PVDF Membrane Pore Size Specifications Recommended conditions for wet transfer: 200 mA, 120 min. ( Note that the transfer conditions can be adjusted according to the protein size. For high-molecular-weight proteins, a higher current and longer transfer time are recommended. However, ensure that the transfer tank remains at a low temperature to prevent gel melting.) Block 1. After electrotransfer, wash the film with TBST at room temperature for 5 minutes; 2. Incubate the film in the blocking solution for 1 hour at room temperature; 3. Wash the film with TBST for 3 times, 5 minutes each time. Antibody incubation 1. Use 5% skim milk powder to prepare the primary antibody working liquid (recommended dilution ratio for primary antibody 1:1000), gently shake and incubate with the film at 4°C overnight; 2. Wash the film with TBST 3 times, 5 minutes each time; 3. Add the secondary antibody to the blocking solution and incubate with the film gently at room temperature for 1 hour; 4. After incubation, wash the film with TBST 3 times for 5 minutes each time. Antibody staining 1. Add the prepared ECL luminescent substrate (or select other color developing substrate according to the second antibody) and mix evenly; 2. Incubate with the film for 1 minute, remove excess substrate (keep the film moist), wrap with plastic film, and expose in the imaging system.

Experimental Protocol:

Sample preparation

1. Tissue: Lyse the tissue sample by adding an appropriate volume of ice-cold RIPA/Nuclear Lysis Buffer (containing Protease Inhibitor Cocktail)，and homogenize the tissue at a low temperature.

2. Adherent cell: Aspirate the culture medium and wash the cells with ice-cold PBS twice. Lyse the cells by adding an appropriate volume of RIPA/Nuclear Lysis Buffer (containing Protease Inhibitor Cocktail) and put the sample on ice for 5 min.

3. Suspension cell: Transfer the culture medium to a pre-cooled centrifuge tube. Centrifuge and aspirate the supernatant. Wash the cells with ice-cold PBS twice. Lyse the cells by adding an appropriate volume of RIPA/Nuclear Lysis Buffer (containing Protease Inhibitor Cocktail) and put the sample on ice for 5 min.

4. Place the lysate into a pre-cooled microcentrifuge tube. Centrifuge at 4°C for 15 min. Collect the supernatant;

5. Remove a small volume of lysate to determine the protein concentration;

6. Combine the lysate with protein loading buffer. Boil 20 µL sample under 95-100°C for 5 min. Centrifuge for 5 min after cool down on ice.

Electrophoretic separation

1. According to the concentration of extracted protein, load appropriate amount of protein sample and marker onto SDS-PAGE gels for electrophoresis. Recommended separating gel (lower gel) concentration: 10%. Reference Table for Selecting SDS-PAGE Separation Gel Concentrations

2. Power up 80V for 30 minutes. Then the power supply is adjusted (110 V~150 V), the Marker is observed, and the electrophoresis can be stopped when the indicator band of the predyed protein Marker where the protein is located is properly separated. (Note that the current should not be too large when electrophoresis, too large current (more than 150 mA) will cause the temperature to rise, affecting the result of running glue. If high currents cannot be avoided, an ice bath can be used to cool the bath.)

Transfer membrane

1. Take out the converter, soak the clip and consumables in the pre-cooled converter;

2. Activate PVDF membrane with methanol for 1 min and rinse with transfer buffer;

3. Install it in the order of "black edge of clip - sponge - filter paper - filter paper - glue -PVDF membrane - filter paper - filter paper - sponge - white edge of clip";

4. The protein was electrotransferred to PVDF membrane. ( 0.45 µm PVDF membrane is recommended ) Reference Table for Selecting PVDF Membrane Pore Size Specifications

Recommended conditions for wet transfer: 200 mA, 120 min.

( Note that the transfer conditions can be adjusted according to the protein size. For high-molecular-weight proteins, a higher current and longer transfer time are recommended. However, ensure that the transfer tank remains at a low temperature to prevent gel melting.)

Block

1. After electrotransfer, wash the film with TBST at room temperature for 5 minutes;

2. Incubate the film in the blocking solution for 1 hour at room temperature;

3. Wash the film with TBST for 3 times, 5 minutes each time.

Antibody incubation

1. Use 5% skim milk powder to prepare the primary antibody working liquid (recommended dilution ratio for primary antibody 1:1000), gently shake and incubate with the film at 4°C overnight;

2. Wash the film with TBST 3 times, 5 minutes each time;

3. Add the secondary antibody to the blocking solution and incubate with the film gently at room temperature for 1 hour;

4. After incubation, wash the film with TBST 3 times for 5 minutes each time.

Antibody staining

1. Add the prepared ECL luminescent substrate (or select other color developing substrate according to the second antibody) and mix evenly;

2. Incubate with the film for 1 minute, remove excess substrate (keep the film moist), wrap with plastic film, and expose in the imaging system.

Datasheet & SDS

生物学的記述

Specificity
HIF-2α mAb recognizes endogenous levels of total HIF-2α protein.

Synonym(s)
EPAS1,HIF-2 alpha,HIF-2α

Uniprot ID
Q99814

Clone
J7H2

Background
Cells, tissues, and organisms experience reduced oxygen levels, or "hypoxia," under both physiological and pathological conditions. During early embryonic development, the rapid proliferation of cells creates a state of physiological hypoxia, which drives the formation of the hematopoietic and circulatory systems. The hypoxia-inducible factors (HIFs) are critical mediators of the cellular and systemic adaptive response to low oxygen availability. These heterodimeric proteins belong to the basic helix-loop-helix (bHLH)/Per-Arnt-Sim (PAS) domain family of transcription factors. Under normal oxygen conditions (normoxia), HIF-α subunits are hydroxylated at specific proline residues, enabling recognition by the von Hippel-Lindau (pVHL) tumor suppressor. As part of an E3 ubiquitin ligase complex, pVHL targets HIF-α for proteasomal degradation. HIF-2α, also known as endothelial PAS domain protein 1 (EPAS1), HIF-like factor (HLF), HIF-related factor (HRF), or member of PAS superfamily 2 (MOP2), is expressed in the parenchymal and interstitial cells of various organs. Its disruption results in embryonic lethality, underscoring its essential role in development. HIF-2α is also commonly expressed in solid tumors.

Background

Cells, tissues, and organisms experience reduced oxygen levels, or "hypoxia," under both physiological and pathological conditions. During early embryonic development, the rapid proliferation of cells creates a state of physiological hypoxia, which drives the formation of the hematopoietic and circulatory systems. The hypoxia-inducible factors (HIFs) are critical mediators of the cellular and systemic adaptive response to low oxygen availability. These heterodimeric proteins belong to the basic helix-loop-helix (bHLH)/Per-Arnt-Sim (PAS) domain family of transcription factors. Under normal oxygen conditions (normoxia), HIF-α subunits are hydroxylated at specific proline residues, enabling recognition by the von Hippel-Lindau (pVHL) tumor suppressor. As part of an E3 ubiquitin ligase complex, pVHL targets HIF-α for proteasomal degradation. HIF-2α, also known as endothelial PAS domain protein 1 (EPAS1), HIF-like factor (HLF), HIF-related factor (HRF), or member of PAS superfamily 2 (MOP2), is expressed in the parenchymal and interstitial cells of various organs. Its disruption results in embryonic lethality, underscoring its essential role in development. HIF-2α is also commonly expressed in solid tumors.

References
[1] Patel SA, et al. Cell Death Differ. 2008 Apr;15(4):628-34.

PVDFメンブレン孔径参考表

Protein Size (kDa)	PVDF Transfer Membrane Pore Size (μm)
< 10	0.22
10-20	0.22
20-30	0.45
30-45	0.45
45-70	0.45
80-100	0.45
100-140	0.45
> 140	0.45

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Protein Size (kDa)	Separating Gel Percentage
4-40	20%
12-45	15%
10-70	12.5%
15-100	10%
25-100	8%
60-210	5%