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Tight junction protein ZO-1 antibody - 474 005

ZO-1 is a scaffold protein involved in tight junction assembly
Guinea pig polyclonal purified antibody
Cat. No.: 474 005
Amount: 50 µg
Price: $460.00
Cat. No. 474 005 50 µg specific antibody, lyophilized. Affinity purified with the immunogen. Albumin and azide were added for stabilization. For reconstitution add 50 µl H2O to get a 1mg/ml solution in PBS. Then aliquot and store at -20°C to -80°C until use.
Antibodies should be stored at +4°C when still lyophilized. Do not freeze!
Applications
 
WB: 1 : 1000 up to 1 : 2000 (AP-staining) gallery  
IP: not tested yet
ICC: 1 : 500 up to 1 : 1000 gallery  
IHC: not recommended
IHC-P: not tested yet
IHC-Fr: 1 : 100 up to 1 : 2500 (see remarks) gallery  

Western blot (WB); separation of proteins by PAGE and subsequent transfer to a membrane. Detection of target molecules is carried out with antibodies. Some antibodies require special sample preparation steps. For details, please refer to the “Remarks” section.

Immunoprecipitation (IP); Immunoisolation or pulldown of a target molecule using an antibody. For details and product specific hints, please refer to the ”Remarks” section.

Immunocytochemistry (ICC) on 4% PFA fixed cells. Immunoreactivity is usually revealed by fluorescence. Some antibodies require special fixation methods. For details, please refer to the “Remarks” section.

Immunohistochemistry (IHC) on 4% PFA perfusion fixed tissue with 24h PFA post fixation. Immunoreactivity is usually revealed by fluorescence or a chromogenic substrate. Some antibodies require special fixation methods or antigen retrieval steps. For details, please refer to the ”Remarks” section.

Immunohistochemistry (IHC-P) of formalin fixed, paraffin embedded (FFPE) tissue (some antibodies require special antigen retrieval steps, please refer to the ”Remarks” section). Immunoreactivity is usually revealed by fluorescence or a chromogenic substrate.

Immunohistochemistry on fresh frozen (IHC-Fr) cryo-tissue-sections. In contrast to standard PFA perfusion fixed tissues, fresh frozen cryo-tissue-sections can be variably postfixed with alcohols, acetone or PFA. Alcohol or acetone fixation is e.g. of advantage for antigens masked by PFA crosslinking. For recommended postfixation, please refer to the ”Remarks” section. Immunoreactivity is usually revealed by fluorescence or a chromogenic substrate.

Immunogen Recombinant protein corresponding to residues near the carboxy terminus of mouse Tight junction protein ZO-1. (UniProt Id: P39447)
Reactivity Reacts with: mouse (P39447), rat (A0A0G2K2P5), dog (O97758).
Other species not tested yet.
Matching control protein/peptide 474-0P
Remarks

IHC-Fr: Methanol fixation is recommended.

Data sheet 474_005.pdf
Cat. No.: 474 005
Amount: 50 µg
Price: $460.00
Background

ZO-1 (also known as TJP1) is a peripheral membrane phosphoprotein with a molecular mass of 220 kDa, located on the cytoplasmic face and is expressed in tight junctions of both epithelial and endothelial cells. (1) Two isoforms, ZO-1α− and ZO-1α+, have been described, which, as a result of alternative RNA splicing, differ by an internal 80 amino acid sequence. (2) 
ZO-1 binds the transmembrane proteins occludin and the claudins linking them to cytoskeletal actin. (3)