Ef Tu Gtp
Ef Tu Gtp - Related Videos
10:13
Measuring G-protein-coupled Receptor Signaling via Radio-labeled GTP Binding
0 Views •
Cited by 11 •
2017
Guanosine triphosphate (GTP) binding is one of the earliest events in G-Protein-Coupled Receptor (GPCR) activation. This protocol describes how to pharmacologically characterize specific GPCR-ligand interactions by monitoring the binding of the radio-labeled GTP analog, [35S]guanosine-5'-O-(3-thio)triphosphate ([35S]GTPγS), in response to a ligand of interest.
02:07
Improving Translational Accuracy
0 Views •
2020
Base complementarity between the three base pairs of mRNA codon and the tRNA anticodon is not a failsafe mechanism. Inaccuracies can range from a single mismatch to no correct base pairing at all. The free energy difference between the correct and nearly correct base pairs can be as small as 3 kcal/ mol. With complementarity being the only proofreading step, the estimated error frequency would be one wrong amino acid in every 100 amino acids incorporated. However, error frequencies observed in...
01:58
Mechanical Protein Functions
0 Views •
2020
Proteins perform many mechanical functions in a cell. These proteins can be classified into two general categories- proteins that generate mechanical forces and proteins that are subjected to mechanical forces. Proteins providing mechanical support to the structure of the cell, such as keratin, are subjected to mechanical force, whereas proteins involved in cell movement and transport of molecules across cell membranes, such as an ion pump, are examples of generating mechanical force.
13:51
Detection of Small GTPase Prenylation and GTP Binding Using Membrane Fractionation and GTPase-linked Immunosorbent Assay
0 Views •
Cited by 6 •
2018
Here we describe a protocol to investigate the prenylation and guanosine-5'-triphosphate (GTP)-loading of Rho GTPase. This protocol consists of two detailed methods, namely membrane fractionation and a GTPase-linked immunosorbent assay. The protocol can be used for measuring the prenylation and GTP loading of different other small GTPases.
07:38
Adult Zebrafish Injury Models to Study the Effects of Prednisolone in Regenerating Bone Tissue
0 Views •
Cited by 13 •
2018
Here, we describe 3 adult zebrafish injury models and their combined use with immunosuppressive drug treatment. We provide guidance on imaging of regenerating tissues and on detecting bone mineralization therein.
FAQs
Accurate codon–anticodon pairing provides the ribosome with a fidelity checkpoint before peptide-bond formation. When pairing is correct, it stimulates GTP hydrolysis by EF-Tu. This nucleotide reaction changes the protein’s conformation and permits aminoacyl-tRNA release, so the ribosome preferentially advances correctly matched tRNAs while limiting errors during bacterial protein synthesis.
GTP hydrolysis functions as a molecular switch rather than merely supplying energy. Before hydrolysis, EF-Tu holds the aminoacyl-tRNA in a state suitable for delivery to the ribosomal A site. Hydrolysis changes EF-Tu’s conformation, weakening that delivery state and releasing the tRNA so it can participate in peptide-bond formation.
The complex couples a chemical signal, the GTP-bound state, to a specific translation decision at the ribosome. Codon recognition determines whether hydrolysis occurs, and hydrolysis determines whether the tRNA is released for the next step. This coupling coordinates delivery, timing, and fidelity instead of allowing tRNA entry to proceed independently of decoding.
Researchers can examine the relationship among GTP binding, aminoacyl-tRNA delivery, codon–anticodon pairing, hydrolysis, conformational change, and tRNA release. Considering these events as a sequence helps connect molecular recognition with the final accuracy of protein synthesis. Such analysis contributes to broader studies of ribosome function and the mechanisms that support efficient bacterial translation.
Bacterial growth depends on producing proteins from genetic information, making translation a central biological process. EF-Tu-GTP contributes to that process by coordinating accurate aminoacyl-tRNA use at the ribosome. Investigating its activity therefore helps relate molecular events in protein synthesis to the broader capacity of bacteria to grow and maintain cellular functions.
Interfering with EF-Tu-GTP could disrupt a translation step that bacteria require for protein production. Because the complex connects aminoacyl-tRNA delivery, decoding accuracy, and GTP-dependent release, changes in its function may affect both efficiency and fidelity. Studying these vulnerabilities supports antimicrobial research aimed at limiting bacterial protein synthesis and, consequently, growth.