Abstract
Many biological signals are processed by the binding of chemicals to cell surface receptors. Signals are switched to intracellular language via guanine nucleotide binding regulatory proteins (G-proteins) which are present in all eukaryotic cells. Thus, G-proteins serve as interfaces between receptor-response coupling. Two forms of G-proteins have been reported: conventional G-proteins which are heterotrimeric and consist of α, β, and γ subunits, and monomeric small molecular weight G-proteins which are generally found as single polypeptides. Recently, high molecular weight G-proteins have also been described. The family of G-proteins contains multiple genes that encode the α, β, or γ subunits. G-proteins play a pivotal role in excitation-contraction coupling in smooth muscle function and control metabolic and secretory processes. In this review article, we have given a brief overview on the characteristics and methodology for the identification of G-proteins. The heterotrimeric G-proteins are generally identified by Western blotting and ADP-ribosylation with bacterial toxins. The monomeric and high molecular weight G-proteins have been identified by [35S]GTPδS overlay technique and photoaffinity labeling, respectively. Recently, the use of molecular genetic probes has made it possible to investigate the expression of the message for various G-proteins.
| Original language | English |
|---|---|
| Pages (from-to) | 187-196 |
| Number of pages | 10 |
| Journal | Journal of Pharmacological and Toxicological Methods |
| Volume | 32 |
| Issue number | 4 |
| DOIs | |
| State | Published - 1994 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Pharmacology
- Toxicology
Cite this
Guanine nucleotide binding regulatory proteins : Their characteristics and identification. / Ali, Nawab; Agrawal, Devendra K.
In: Journal of Pharmacological and Toxicological Methods, Vol. 32, No. 4, 1994, p. 187-196.Research output: Contribution to journal › Review article
}
TY - JOUR
T1 - Guanine nucleotide binding regulatory proteins
T2 - Their characteristics and identification
AU - Ali, Nawab
AU - Agrawal, Devendra K.
PY - 1994
Y1 - 1994
N2 - Many biological signals are processed by the binding of chemicals to cell surface receptors. Signals are switched to intracellular language via guanine nucleotide binding regulatory proteins (G-proteins) which are present in all eukaryotic cells. Thus, G-proteins serve as interfaces between receptor-response coupling. Two forms of G-proteins have been reported: conventional G-proteins which are heterotrimeric and consist of α, β, and γ subunits, and monomeric small molecular weight G-proteins which are generally found as single polypeptides. Recently, high molecular weight G-proteins have also been described. The family of G-proteins contains multiple genes that encode the α, β, or γ subunits. G-proteins play a pivotal role in excitation-contraction coupling in smooth muscle function and control metabolic and secretory processes. In this review article, we have given a brief overview on the characteristics and methodology for the identification of G-proteins. The heterotrimeric G-proteins are generally identified by Western blotting and ADP-ribosylation with bacterial toxins. The monomeric and high molecular weight G-proteins have been identified by [35S]GTPδS overlay technique and photoaffinity labeling, respectively. Recently, the use of molecular genetic probes has made it possible to investigate the expression of the message for various G-proteins.
AB - Many biological signals are processed by the binding of chemicals to cell surface receptors. Signals are switched to intracellular language via guanine nucleotide binding regulatory proteins (G-proteins) which are present in all eukaryotic cells. Thus, G-proteins serve as interfaces between receptor-response coupling. Two forms of G-proteins have been reported: conventional G-proteins which are heterotrimeric and consist of α, β, and γ subunits, and monomeric small molecular weight G-proteins which are generally found as single polypeptides. Recently, high molecular weight G-proteins have also been described. The family of G-proteins contains multiple genes that encode the α, β, or γ subunits. G-proteins play a pivotal role in excitation-contraction coupling in smooth muscle function and control metabolic and secretory processes. In this review article, we have given a brief overview on the characteristics and methodology for the identification of G-proteins. The heterotrimeric G-proteins are generally identified by Western blotting and ADP-ribosylation with bacterial toxins. The monomeric and high molecular weight G-proteins have been identified by [35S]GTPδS overlay technique and photoaffinity labeling, respectively. Recently, the use of molecular genetic probes has made it possible to investigate the expression of the message for various G-proteins.
UR - http://www.scopus.com/inward/record.url?scp=0028593678&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0028593678&partnerID=8YFLogxK
U2 - 10.1016/1056-8719(94)90086-8
DO - 10.1016/1056-8719(94)90086-8
M3 - Review article
VL - 32
SP - 187
EP - 196
JO - Journal of Pharmacological and Toxicological Methods
JF - Journal of Pharmacological and Toxicological Methods
SN - 1056-8719
IS - 4
ER -