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2015 ; 1334
(ä): 85-99
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Southwestern Blotting Assay
#MMPMID26404144
Jia Y
; Nagore L
; Jarrett H
Methods Mol Biol
2015[]; 1334
(ä): 85-99
PMID26404144
show ga
Southwestern blotting is a technique used to study DNA-protein interactions. This
method detects specific DNA-binding proteins by incubating radiolabeled DNA with
a gel blot, washing, and visualizing through autoradiography. A blot resulting
from 1-dimensional SDS-PAGE reveals the molecular weight of the binding proteins.
To increase separation and determine isoelectric point a 2-dimensional gel can be
blotted. Additional dimensions of electrophoresis, such as a gel shift (EMSA),
can precede isoelectric focusing and SDS-PAGE to further improve separation.
Combined with other techniques, such as mass spectrometry, the DNA-binding
protein can be identified.