Category:SO:0000603 ! group II intron

From SO Wiki
Jump to: navigation, search

DAG for SO:0000603id: SO:0000603
name: group_II_intron
def: "Group II introns are found in rRNA, tRNA and mRNA of organelles in fungi, plants and protists, and also in mRNA in bacteria. They are large self-splicing ribozymes and have 6 structural domains (usually designated dI to dVI). A subset of group II introns also encode essential splicing proteins in intronic ORFs. The length of these introns can therefore be up to 3kb. Splicing occurs in almost identical fashion to nuclear pre-mRNA splicing with two transesterification steps. The 2' hydroxyl of a bulged adenosine in domain VI attacks the 5' splice site, followed by nucleophilic attack on the 3' splice site by the 3' OH of the upstream exon. Protein machinery is required for splicing in vivo, and long range intron-intron and intron-exon interactions are important for splice site positioning. Group II introns are further sub-classified into groups IIA and IIB which differ in splice site consensus, distance of bulged A from 3' splice site, some tertiary interactions, and intronic ORF phylogeny." [1]
comment: GO:0000373.
subset: SOFA
synonym: "group II intron" EXACT []
xref: "wiki"
is_a: SO:0000588 ! autocatalytically_spliced_intron

Sequence Ontology Home
miSO ontology browser

History of this term:

Date CreatedDate Last EditedDate ObsoletedDate Last Checked

The edit history for SO:0000603
Term Tracker Entries
If you would like to create a new tracker item, please follow this link


GFF3 files containing this term:

This term is used by the following projects:
Royal Society of Chemistry - project prospect.

The contents of this box are automatically generated. You can help by adding information to the Notes



This category has the following 2 subcategories, out of 2 total.

Personal tools