|
GO_0000369
|
GO_0000369 |
|
|
mRNA alternative trans-splicing
|
GO_0000366 |
[The joining together of two independently transcribed RNAs from two different genes, each of which also produces mRNA(s) via cis-splicing.] |
|
mRNA trans splicing, via spliceosome
|
GO_0000365 |
[The joining together of exons from two different primary transcripts of messenger RNA (mRNA) via a spliceosomal mechanism, so that mRNA consisting only of the joined exons is produced.] |
|
obsolete second U12-type spliceosomal transesterification activity
|
GO_0000367 |
[OBSOLETE. Catalysis of the second transesterification reaction of U12-type spliceosomal mRNA splicing. Ligation of the two exons occurs via a transesterification reaction where the free 3'-hydroxyl group of the 5' exon is the nucleophile attacking the 3' splice site. Non-expressed sequences are now detached from the exons. In cis splicing, the intron is in a lariat structure. The catalytic site is thought to be formed by U6 and/or U2 snRNAs and/or associated proteins.] |
|
obsolete second U2-type spliceosomal transesterification activity
|
GO_0000364 |
[OBSOLETE. Catalysis of the second transesterification reaction of U2-type spliceosomal mRNA splicing. Ligation of the two exons occurs via a transesterification reaction where the free 3'-hydroxyl group of the 5' exon is the nucleophile attacking the 3' splice site. Non-expressed sequences are now detached from the exons. In cis splicing, the intron is in a lariat structure. The catalytic site is thought to be formed by U6 and/or U2 snRNAs and/or associated proteins.] |
|
obsolete first U2-type spliceosomal transesterification activity
|
GO_0000362 |
[OBSOLETE. Catalysis of the first transesterification reaction of U2-type spliceosomal mRNA splicing. The intron branch site adenosine is the nucleophile attacking the 5' splice site, resulting in cleavage at this position. In cis splicing, this is the step that forms a lariat structure of the intron RNA, which is still joined to the 3' exon. The catalytic site is thought to be formed by U6 and/or U2 snRNA, and/or associated proteins.] |
|
obsolete first U12-type spliceosomal transesterification activity
|
GO_0000363 |
[OBSOLETE. Catalysis of the first transesterification reaction of U12-type spliceosomal mRNA splicing. The intron branch site adenosine is the nucleophile attacking the 5' splice site, resulting in cleavage at this position. In cis splicing, this is the step that forms a lariat structure of the intron RNA, which is still joined to the 3' exon. The catalytic site is thought to be formed by U6atac snRNA and/or U2atac snRNA, and/or associated proteins.] |
|
GO_0000360
|
GO_0000360 |
|
|
GO_0000361
|
GO_0000361 |
|
|
GO_0000359
|
GO_0000359 |
|
|
GO_0000357
|
GO_0000357 |
|
|
GO_0000358
|
GO_0000358 |
|
|
GO_0000355
|
GO_0000355 |
|
|
GO_0000356
|
GO_0000356 |
|
|
formation of quadruple SL/U4/U5/U6 snRNP
|
GO_0000353 |
[Formation of a quadruple snRNP complex composed of the spliced leader (SL) RNA along with the U4/U6-U5 tri-snRNP complex. Interactions that may facilitate this include a duplex between the SL and U6 RNAs and interactions between the U5 RNA and the exon sequence at the 5' splice site within the SL RNA.] |
|
cis assembly of pre-catalytic spliceosome
|
GO_0000354 |
[Assembly of a spliceosomal complex containing the intact pre-mRNA and all of the spliceosomal snRNPs. This occurs when the tri-snRNP associates with the pre-mRNA and associated snRNPs in an ATP-dependent manner.] |
|
GO_0000351
|
GO_0000351 |
|
|
trans assembly of SL-containing precatalytic spliceosome
|
GO_0000352 |
[Assembly of a spliceosomal complex containing the SL RNA and the pre-mRNA to be joined, as well as all the spliceosomal snRNPs involved in trans leader splicing. Formation of the trans leader spliceosome brings together the quadruple SL/U4/U5/U6 snRNP and the complex of the U2 snRNP with the splice site of the pre-mRNA.] |
|
generation of catalytic spliceosome for second transesterification step
|
GO_0000350 |
[Conformational rearrangement of the spliceosomal complex containing the RNA products from the 1st step of splicing to form the catalytic site for the second step of splicing.] |
|
mRNA branch site recognition
|
GO_0000348 |
[Recognition of the pre-mRNA branch site sequence by components of the assembling spliceosome.] |
