Gene Ontology Help

Nascent polypeptide-associated complex, EGD1-EGD2 variant Overview

GO Annotations consist of four mandatory components: a gene product, a term from one of the three Gene Ontology (GO) controlled vocabularies (Molecular Function, Biological Process, and Cellular Component), a reference, and an evidence code.


Summary
Reversibly binds to cytoplasmic ribosomes and interacts with nascent polypeptides emerging from the ribosome to prevent them from incorrect interactions, thus controlling the early protein folding processes and preventing aggregation or degradation of newly synthesized proteins. The EGD1-EGD2 variant appears to be the dominant form of the complex formed in vivo and has a preference for ribosomes translating metabolic enzymes as well as secretory and membrane proteins. By binding to the first 30-50 amino acids to be translated, the complex prevents mitochondrial precursor proteins synthesized in the cytosol from forming a basic, amphipathic helix. This enables this targeting sequence to first bind to chaperones and mitochondrial import stimulating factors and then to the outer membrane translocase complex (CPX-474) on the mitochondrial surface.
GO Slim Terms

The yeast GO Slim terms are higher level terms that best represent the major S. cerevisiae biological processes, functions, and cellular components. The GO Slim terms listed here are the broader parent terms for the specific terms to which this gene product is annotated, and thus represent the more general processes, functions, and components in which it is involved.

unfolded protein binding, protein folding, cytoplasm