MSS18 protein (Saccharomyces cerevisiae) - STRING interaction network
"MSS18" - Nuclear encoded protein needed for efficient splicing of mitochondrial COX1 aI5beta intron in Saccharomyces cerevisiae
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Predicted Interactions
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Gene Fusion
MSS18Nuclear encoded protein needed for efficient splicing of mitochondrial COX1 aI5beta intron; mss18 mutations block cleavage of 5’ exon - intron junction; phenotype of intronless strain suggests additional functions; Involved in splicing of intron aI5-beta of the mitochondrial COX1 transcript (268 aa)    
Predicted Functional Partners:
Protein required for the splicing of two mitochondrial group I introns (BI3 in COB and AI5beta in COX1); forms a splicing complex, containing four subunits of Mrs1p and two subunits of the BI3-encoded maturase, that binds to the BI3 RNA; Function in mitochondrial RNA splicing in the excision of mitochondrial group I introns aI5 beta from COX1 and bI3 from COB transcripts and thus would be involved in obtaining the correct structure of the intron, to allow the RNA catalyzed reactions to occur (363 aa)
Mitochondrial inner membrane protein; binds to the 5’ UTR of the COX3 mRNA to activate its translation together with Pet122p and Pet494p; also binds to the COX1 Group I intron AI5 beta to facilitate exon ligation during splicing; Activator of specific mitochondrial mRNAs. PET54 is involved in the excision of intron aI5-beta from pre-mRNA for cytochrome c oxidase I (COX1) and plays a role in promoting the translation of COX3 (293 aa)
ATP-dependent RNA helicase, component of the mitochondrial degradosome along with the RNase Dss1p; the degradosome associates with the ribosome and mediates RNA turnover; also required during splicing of the COX1 AI5_beta intron; Required for intron-independent turnover and processing of mitochondrial RNA. It is a key control element in nuclear- mitochondrial interactions (737 aa)
Protein of unknown function, encoded within an intron of the mitochondrial COX1 gene; translational initiation codon is predicted to be ATA rather than ATG; Mitochondrial DNA endonuclease involved in intron homing (354 aa)
DEAD-box protein required for efficient splicing of mitochondrial Group I and II introns; non-polar RNA helicase that also facilities strand annealing; ATP-dependent RNA helicase required for mitochondrial splicing of group I and II introns. Specifically involved in the ATP-dependent splicing of the bl1 intron of COB. Also required for efficient mitochondrial translation (664 aa)
Core subunit of the ubiquinol-cytochrome c reductase complex (bc1 complex), which is a component of the mitochondrial inner membrane electron transport chain; Component of the ubiquinol-cytochrome c reductase complex (complex III or cytochrome b-c1 complex), which is part of the mitochondrial respiratory chain that generates an electrochemical potential coupled to ATP synthesis. The complex couples electron transfer from ubiquinol to cytochrome c. COR1 may mediate formation of the complex between cytochromes c and c1 (457 aa)
Splicing factor associated with the spliceosome; contains a U-box, a motif found in a class of ubiquitin ligases, and a WD40 domain; Probable ubiquitin-protein ligase involved in pre-mRNA splicing. Acts as a central component of the NTC complex (or PRP19-associated complex) that associates to the spliceosome to mediate conformational rearrangement or to stabilize the structure of the spliceosome after U4 snRNA dissociation, which leads to spliceosome maturation. It is also probably involved in DNA repair (503 aa)
Spliceosome-associated protein that is required for pre-mRNA splicing; necessary for Prp2p function at the first catalytic step of splicing; has similarity to S. pombe Cwf22p; CWC22 is an essential protein; May be involved in pre-mRNA splicing (577 aa)
Mitochondrial protein required for splicing of the group I intron aI5 of the COB pre-mRNA, binds to the RNA to promote splicing; also involved in but not essential for splicing of the COB bI2 intron and the intron in the 21S rRNA gene; Appears to be specifically required for the splicing of the terminal intron (bI5) of the cytochrome b pre-mRNA. Can also stimulates the splicing of the omega intron of the precursor of large ribosomal RNA (630 aa)
Mitochondrial mRNA maturase, forms a complex with Nam2p to mediate splicing of the bI4 intron of the COB gene; encoded by both exon and intron sequences of partially processed COB mRNA; Mitochondrial mRNA maturase required for splicing of intron 4 of the cytochrome b (COB) gene, containing its own coding sequence, and intron 4 in COX1, coding for the related homing endonuclease aI4. In vivo splicing requires in addition the imported mitochondrial leucyl-tRNA synthetase NAM2. Both proteins seem to stimulate the intrinsic ribozyme activity of intron bI4 through binding to and stabilizing [...] (638 aa)
Your Current Organism:
Saccharomyces cerevisiae
NCBI taxonomy Id: 4932
Other names: Candida robusta, Pachytichospora, S. cerevisiae, Saccharomyces, Saccharomyces capensis, Saccharomyces cerevisiae, Saccharomyces italicus, Saccharomyces oviformis, Saccharomyces uvarum var. melibiosus, lager beer yeast, yeast
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