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El análisis por inmunotransferencia

1, 2

1UVP, LLC, 2Proteomic Center, Keck Graduate Institute of Applied Life Sciences

 

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Cite this Article: El análisis por inmunotransferencia

Gallagher, S., Chakavarti, D. Immunoblot Analysis. J. Vis. Exp. (16), e759, doi:10.3791/759 (2008).

Abstract: El análisis por inmunotransferencia

Inmunotransferencia (Western Blot) es un ensayo rápido y sensible para la detección y caracterización de proteínas que funciona mediante la explotación de la especificidad inherente en el reconocimiento antígeno-anticuerpo. Se trata de la solubilización y separación electroforética de las proteínas, glicoproteínas, o lipopolisacáridos por electroforesis en gel, seguido de la transferencia cuantitativa y unión irreversible a nitrocelulosa, PVDF, o de nylon. La técnica de inmunotransferencia ha sido útil en la identificación de antígenos específicos reconocidos por los anticuerpos policlonales o monoclonales y es altamente sensible (1 ng de antígeno puede ser detectado). Esta unidad dispone de protocolos para la separación de proteínas, las proteínas en las membranas de secante, immunoprobing y visualización utilizando sustratos cromogénicos o quimioluminiscencia.

Protocol: El análisis por inmunotransferencia

El protocolo de texto completo de este enfoque experimental está disponible en Current Protocols in Molecular Biology

Disclosures: El análisis por inmunotransferencia

Ask the Author: El análisis por inmunotransferencia

13 Comments

hello,

for extraction of proteins from cell if we want to lyse whole cell we should use antiprotease .Could we use only PMSF for this purpose or we must use also other antiprotease  with it...if our desired protein is chemokine that secretes to supernatant of our cell culture flask how could we extract it ....thanks alot for your kinds...

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Posted by: loghmanJune 30, 2008, 3:12 AM

It would be great if people submit discussing the troubleshooting of western blots (one of such kind has been dealt in this video..air bubbles trapped in western blots..coz the blotting membrane was put very rapidly in to the transfer buffer for pre wetting)

Post them!

 

Sudheendra.

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Posted by: AnonymousAugust 1, 2008, 6:00 AM

Is there a video for co-immunoprecipitation???

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Posted by: PrernaSeptember 14, 2008, 4:52 AM

How do you quantify the blots with Image-J

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Posted by: ScienceOctober 18, 2008, 3:48 PM

i try to do dot-blot but after using lysis buffer when i lay 1 microlitter of it on PVDF membrane pvdf was lysed what should i do?

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Posted by: sara tanhaeiDecember 7, 2008, 9:43 AM

I didn't see you wash after the milk blocking. You used the antibody right after. Is this how you really do it, or did I miss a step?

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Posted by: wil RemigioJanuary 26, 2009, 2:48 PM

Couple questions

 

Did you do a wash after the milk blocking? or did I miss something?

I am tring to download the pdf..for somereason it is saving me in a very strange format that my pc doesn't recognize.

Can u explain?

 

THanks

 

WIL

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Posted by: wilton R.January 26, 2009, 3:02 PM

You do not have to wash after blocking.

 

You can block then put in primary overnight. After primary and after secondary is where you have to wash so you dont have a lot of background. Works all the time for me...

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Posted by: Hikmat AssiFebruary 19, 2009, 11:39 AM

Dr. Gallagher or Dr. Chakavarti! Could I contact you by E-mail directly, please?

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Posted by: NikolaiApril 16, 2009, 2:10 AM

Please contact me at seang@uvp.com

 

Best regards,

Sean Gallagher

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Posted by: AnonymousMay 1, 2009, 8:14 PM

in which step can we leave the system overnight else?

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Posted by: AnonymousApril 16, 2009, 4:45 AM

  1. At the end of procedure when we dye the Immobilon-P membrane with BioRad 1immu-StarTM AP  Chemo luminescent Protein Detection System: Do we have to remove excess of dye from membrane just before luminescent detection?

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Posted by: AnonymousApril 16, 2009, 5:54 AM

or optimization of a multiplex (two primary antibodies together) quantitative western using the LI COR Odyssey system?

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Posted by: KenJune 3, 2009, 10:23 AM

How, a wonderful. I need this article to help my friends (include me, he...he..) in research
http://infosains.com

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Posted by: infosainsJuly 27, 2009, 10:39 AM

how I get this video

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Posted by: AnonymousAugust 31, 2010, 4:47 AM

Please email us at support@jove.com

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Posted by: AnonymousAugust 31, 2010, 10:12 AM

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