Gene Ontology Help

bI4 intron splicing factor complex 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.

Self-splicing ribozymal RNA Group I intron splicing factor for mitochondrial introns. A guanosine cofactor docks onto an active G-binding site and hydrolyses the phosphodiester bond at the splice site located in P1, resulting in a free hydroxyl group at the upstream exon and the guanosine cofactor being attached to the 5-prime end of the intron. Then the terminal guanosine of the intron occupies the G-binding site to organize the second ester-transfer reaction leading to the ligation of the adjacent upstream and downstream exons and release of the catalytic intron.
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.

hydrolase activity, nuclease activity, RNA splicing, mRNA processing, mitochondrion, organelle