3jb9

Structural highlights

Function

[RU2B_SCHPO] Involved in pre-mRNA splicing. This protein is associated with snRNP U2. It binds stem loop IV of U2 snRNA (By similarity). [SLT11_SCHPO] Facilitates the cooperative formation of U2/U6 helix II in association with stem II in the spliceosome. Binds to RNA (By similarity). Involved in pre-mRNA splicing. [SMD2_SCHPO] Involved in pre-mRNA splicing. Binds snRNA U1, U2, U4 and U5 which contain a highly conserved structural motif called the Sm binding site (By similarity). [CWC15_SCHPO] Involved in pre-mRNA splicing. [SN114_SCHPO] Component of the U5 snRNP complex required for pre-mRNA splicing. Binds GTP. [SPP42_SCHPO] Involved in pre-mRNA splicing. May be involved in endoplasmic reticulum-associated protein degradation (ERAD) and required for growth at low and high temperatures (By similarity). Required for pre-spliceosome formation, which is the first step of pre-mRNA splicing. This protein is associated with snRNP U5. Has a role in branch site-3' splice site selection. Associates with the branch site-3' splice 3'-exon region.^[1] [PRP19_SCHPO] Probable ubiquitin-protein ligase involved in pre-mRNA splicing where it associates with cdc5 and the other cwf proteins as part of the spliceosome. May also function in DNA repair.[UniProtKB:P32523] [CWF11_SCHPO] Involved in mRNA splicing where it associates with cdc5 and the other cwf proteins as part of the spliceosome. [SPF27_SCHPO] Involved in mRNA splicing. [PRP17_SCHPO] Functions in the second step of pre-mRNA splicing. Involved in splicing intron which are longer than 200 nucleotides.^[2] [CWC2_SCHPO] Involved in the first step of pre-mRNA splicing. Required for cell growth and cell cycle control. Plays a role in the levels of the U1, U4, U5 and U6 snRNAs and the maintenance of the U4/U6 snRNA complex. May provide the link between the "nineteen complex" NTC spliceosome protein complex and the spliceosome through the U6 snRNA. Associates predominantly with U6 snRNAs in assembled active spliceosomes. Binds directly to the internal stem-loop (ISL) domain of the U6 snRNA and to the pre-mRNA intron near the 5' splice site during the activation and catalytic phases of the spliceosome cycle (By similarity). Involved in pre-mRNA splicing.^[3] [CWF14_SCHPO] Involved in mRNA splicing where it associates with cdc5 and the other cwf proteins as part of the spliceosome. [RUXG_SCHPO] Involved in pre-mRNA splicing. Binds snRNA U1, U2, U4 and U5 which contain a highly conserved structural motif called the Sm binding site (By similarity). [RU2A_SCHPO] Involved in pre-mRNA splicing. This protein is associated with sn-RNP U2. It helps the A' protein to bind stem loop IV of U2 snRNA (By similarity). [CWF19_SCHPO] Involved in mRNA splicing where it associates with cdc5 and the other cwf proteins as part of the spliceosome. Involved in mRNA splicing. [PRP45_SCHPO] Involved in pre-mRNA splicing. [PPIL1_SCHPO] PPIases accelerate the folding of proteins. It catalyzes the cis-trans isomerization of proline imidic peptide bonds in oligopeptides (By similarity). [SMD1_SCHPO] Involved in pre-mRNA splicing. Binds snRNA U1, U2, U4 and U5 which contain a highly conserved structural motif called the Sm binding site (By similarity). [RUXF_SCHPO] Involved in pre-mRNA splicing. Binds snRNA U1, U2, U4 and U5 which contain a highly conserved structural motif called the Sm binding site (By similarity). [CWF17_SCHPO] Involved in mRNA splicing where it associates with cdc5 and the other cwf proteins as part of the spliceosome. [RUXE_SCHPO] Involved in pre-mRNA splicing. Binds and is required for the stability of snRNA U1, U2, U4 and U5 which contain a highly conserved structural motif called the Sm binding site. Involved in cap modification (By similarity).[UniProtKB:Q12330] [SMD3_SCHPO] Involved in pre-mRNA splicing. Binds snRNA U1, U2, U4 and U5 which contain a highly conserved structural motif called the Sm binding site (By similarity). [CEF1_SCHPO] Involved in mRNA splicing and cell cycle control.^{[4] [5]} [RSMB_SCHPO] Involved in pre-mRNA splicing. Binds snRNA U1, U2, U4 and U5 which contain a highly conserved structural motif called the Sm binding site (By similarity).

See Also

• Pre-mRNA splicing factors 3D structures

References

1. ↑ Bottner CA, Schmidt H, Vogel S, Michele M, Kaufer NF. Multiple genetic and biochemical interactions of Brr2, Prp8, Prp31, Prp1 and Prp4 kinase suggest a function in the control of the activation of spliceosomes in Schizosaccharomyces pombe. Curr Genet. 2005 Sep;48(3):151-61. Epub 2005 Oct 12. PMID:16133344 doi:http://dx.doi.org/10.1007/s00294-005-0013-6
2. ↑ Sapra AK, Arava Y, Khandelia P, Vijayraghavan U. Genome-wide analysis of pre-mRNA splicing: intron features govern the requirement for the second-step factor, Prp17 in Saccharomyces cerevisiae and Schizosaccharomyces pombe. J Biol Chem. 2004 Dec 10;279(50):52437-46. Epub 2004 Sep 27. PMID:15452114 doi:http://dx.doi.org/10.1074/jbc.M408815200
3. ↑ Potashkin J, Li R, Frendewey D. Pre-mRNA splicing mutants of Schizosaccharomyces pombe. EMBO J. 1989 Feb;8(2):551-9. PMID:2721492
4. ↑ McDonald WH, Ohi R, Smelkova N, Frendewey D, Gould KL. Myb-related fission yeast cdc5p is a component of a 40S snRNP-containing complex and is essential for pre-mRNA splicing. Mol Cell Biol. 1999 Aug;19(8):5352-62. PMID:10409726
5. ↑ Ohi R, McCollum D, Hirani B, Den Haese GJ, Zhang X, Burke JD, Turner K, Gould KL. The Schizosaccharomyces pombe cdc5+ gene encodes an essential protein with homology to c-Myb. EMBO J. 1994 Jan 15;13(2):471-83. PMID:8313892
6. ↑ Yan C, Hang J, Wan R, Huang M, Wong CC, Shi Y. Structure of a yeast spliceosome at 3.6-angstrom resolution. Science. 2015 Sep 11;349(6253):1182-91. doi: 10.1126/science.aac7629. Epub 2015, Aug 20. PMID:26292707 doi:http://dx.doi.org/10.1126/science.aac7629