Elongation Factor G, Mitochondrial (GFM1) ELISA Kit for Human

Eukaryotes contain two protein translational systems, one in the cytoplasm and one in the mitochondria. Mitochondrial translation is crucial for maintaining mitochondrial function and mutations in this system lead to a breakdown in the respiratory chain-oxidative phosphorylation system and to impaired maintenance of mitochondrial DNA. This gene encodes one of the mitochondrial translation elongation factors. Its role in the regulation of normal mitochondrial function and in different disease states attributed to mitochondrial dysfunction is not known. [provided by RefSeq, Jul 2008]

EFG1: Mitochondrial GTPase that catalyzes the GTP-dependent ribosomal translocation step during translation elongation. During this step, the ribosome changes from the pre-translocational (PRE) to the post-translocational (POST) state as the newly formed A- site-bound peptidyl-tRNA and P-site-bound deacylated tRNA move to the P and E sites, respectively. Catalyzes the coordinated movement of the two tRNA molecules, the mRNA and conformational changes in the ribosome. Does not mediate the disassembly of ribosomes from messenger RNA at the termination of mitochondrial protein biosynthesis. Defects in GFM1 are the cause of combined oxidative phosphorylation deficiency type 1 (COXPD1). It leads to early fatal progressive hepatoencephalopathy. Belongs to the GTP-binding elongation factor family. EF-G/EF-2 subfamily. 2 isoforms of the human protein are produced by alternative splicing.

Protein type: Mitochondrial; RNA-binding; Translation elongation

Chromosomal Location of Human Ortholog: 3q25

Cellular Component: mitochondrial matrix; mitochondrion

Molecular Function: GTPase activity; protein binding; translation elongation factor activity

Disease: Combined Oxidative Phosphorylation Deficiency 1