Direct visualization of epidermal growth factor receptors (EGFR) in A431 and placental cell membrane by western blot with /sup 125/I-EGF
Conference
·
· Fed. Proc., Fed. Am. Soc. Exp. Biol.; (United States)
OSTI ID:7189282
Using the western blot technique, they have devised a new procedure that allowed the direct visualization of both the 150KD and the 170KD forms of EGFR by its natural ligand, /sup 125/I-EGF. A431, and placental plasmalemma were purified and solubilized in either SDS-PAGE buffer (without DTT, EDTA) or Triton X-100 (0.5%), resolved on PAGE and electrophoretically transferred onto nitrocellulose (NC) paper. In the absence of boiling, SDS did not denature the EGFR. Although EGER band can be detected after hybridization with /sup 125/I-EGF, the receptor signal was considerably improved with the addition of 0.1% Tween-20. The binding of /sup 125/I-EGF to the both the 150KD and the 170KD bands of the EGFR was specific, reversible and increased with the amount of membrane protein present. The direct visualization of the EGFR using its natural ligand eliminated the necessity for the time consuming antibody preparation. Presently, they are using this technique to identify specific receptors for other ligands.
- Research Organization:
- Los Alamos National Lab., NM
- OSTI ID:
- 7189282
- Report Number(s):
- CONF-8604222-
- Conference Information:
- Journal Name: Fed. Proc., Fed. Am. Soc. Exp. Biol.; (United States) Journal Volume: 45:4
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
550201* -- Biochemistry-- Tracer Techniques
59 BASIC BIOLOGICAL SCIENCES
BETA DECAY RADIOISOTOPES
BIOCHEMICAL REACTION KINETICS
CELL CONSTITUENTS
CELL MEMBRANES
DAYS LIVING RADIOISOTOPES
ELECTRON CAPTURE RADIOISOTOPES
ELECTROPHORESIS
FETAL MEMBRANES
HORMONES
INTERMEDIATE MASS NUCLEI
IODINE 125
IODINE ISOTOPES
ISOTOPE APPLICATIONS
ISOTOPES
KINETICS
LIGANDS
MEMBRANE PROTEINS
MEMBRANES
NUCLEI
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
PLACENTA
PROTEINS
RADIOISOTOPES
REACTION KINETICS
RECEPTORS
TRACER TECHNIQUES
59 BASIC BIOLOGICAL SCIENCES
BETA DECAY RADIOISOTOPES
BIOCHEMICAL REACTION KINETICS
CELL CONSTITUENTS
CELL MEMBRANES
DAYS LIVING RADIOISOTOPES
ELECTRON CAPTURE RADIOISOTOPES
ELECTROPHORESIS
FETAL MEMBRANES
HORMONES
INTERMEDIATE MASS NUCLEI
IODINE 125
IODINE ISOTOPES
ISOTOPE APPLICATIONS
ISOTOPES
KINETICS
LIGANDS
MEMBRANE PROTEINS
MEMBRANES
NUCLEI
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
PLACENTA
PROTEINS
RADIOISOTOPES
REACTION KINETICS
RECEPTORS
TRACER TECHNIQUES