Reactome: A Curated Pathway Database
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Pathways (7) Reactions (7) Proteins (1) Others (5)
Protein: UniProt:P12755 SKI (Homo sapiens)
Last changed: 2015-03-12 12:55:37

Pathway: Gene Expression (Homo sapiens)
Gene Expression covers the pathways by which genomic DNA is transcribed to yield RNA, the regulation of these transcription processes, and the pathways by which newly-made RNA Transcripts are processed. Most annotation is centered on the generation of messenger RNAs (mRNAs) by regulated RNA polymerase II (PolII) transcription, although the activities of PolI and PolIII are also covered briefly, as are
Last changed: 2015-03-06 23:15:47

Pathway: Signal Transduction (Homo sapiens)
Signal transduction is a process in which extracellular signals elicit changes in cell state and activity. Transmembrane receptors sense changes in the cellular environment by binding ligands, such as hormones and growth factors, or reacting to other types of stimuli, such as light. Stimulation of transmembrane receptors leads to their conformational change which propagates the signal to the intracellu
Last changed: 2015-03-06 23:15:47

Pathway: Signaling by TGF-beta Receptor Complex (Homo sapiens)
The TGF-beta/BMP pathway incorporates several signaling pathways that share most, but not all, components of a central signal transduction engine. The general signaling scheme is rather simple: upon binding of a ligand, an activated plasma membrane receptor complex is formed, which passes on the signal towards the nucleus through a phosphorylated receptor SMAD (R-SMAD). In the nucleus, the activated R-
Last changed: 2015-03-06 18:40:03

Pathway: Signaling by BMP (Homo sapiens)
The TGF-beta/BMP (bone morphogenetic protein) pathway incorporates several signalling pathways that share most, but not all, components of a central signal transduction engine. The general signalling scheme is rather simple: upon binding of a ligand, an activated plasma membrane receptor complex is formed, which passes on the signal towards the nucleus through a phosphorylated receptor-activated SMAD (
Last changed: 2015-03-06 18:40:03

Pathway: Transcriptional activity of SMAD2/SMAD3:SMAD4 heterotrimer (Homo sapiens)
In the nucleus, SMAD2/3:SMAD4 heterotrimer complex acts as a transcriptional regulator. The activity of SMAD2/3 complex is regulated both positively and negatively by association with other transcription factors (Chen et al. 2002, Varelas et al. 2008, Stroschein et al. 1999, Wotton et al. 1999). In addition, the activity of SMAD2/3:SMAD4 complex can be inhibited by nuclear protein phosphatases and ubiq
Last changed: 2015-03-06 18:40:03

Pathway: Generic Transcription Pathway (Homo sapiens)
OVERVIEW OF TRANSCRIPTION REGULATION: Detailed studies of gene transcription regulation in a wide variety of eukaryotic systems has revealed the general principles and mechanisms by which cell- or tissue-specific regulation of differential gene transcription is mediated (reviewed in Naar, 2001. Kadonaga, 2004, Maston, 2006, Barolo, 2002; Roeder, 2005, Rosenfeld, 2006). Of the three maj
Last changed: 2015-03-06 23:15:47

Pathway: Downregulation of SMAD2/3:SMAD4 transcriptional activity (Homo sapiens)
Transcriptional activity of SMAD2/3:SMAD4 heterotrimer can be inhibited by formation of a complex with SKI or SKIL (SNO), where SKI or SKIL recruit NCOR and possibly other transcriptional repressors to SMAD-binding promoter elements (Sun et al. 1999, Luo et al. 1999, Strochein et al. 1999). Higher levels of phosphorylated SMAD2 and SMAD3, however, may target SKI and SKIL for degradation (Strochein et a
Last changed: 2015-03-06 18:40:03

Reaction: SKI/SKIL binds SMAD complex, suppressing TGF-beta signaling (Homo sapiens)
SKI and SKIL (SNO) are able to recruit NCOR and possibly other transcriptional repressors to SMAD2/3:SMAD4 complex, inhibiting SMAD2/3:SMAD4-mediated transcription (Sun et al. 1999, Luo et al. 1999, Strochein et al. 1999). Experimental findings suggest that SMAD2 and SMAD3 may target SKI and SKIL for degradation (Strochein et al. 1999, Sun et al. 1999 PNAS, Bonni et al. 2001), and that the ratio of SMA
Last changed: 2015-03-06 10:40:16

Reaction: Ubiquitination of SKI/SKIL by Rnf11 (Homo sapiens)
Recombinant mouse Rnf111 (Arkadia), recruited to recombinant human SKI/SKIL bound to TGF-beta-activated SMAD2/3, ubiquitinates SKI/SKIL transcriptional repressors (Levy et al. 2007, Nagano et al. 2007)
Last changed: 2012-05-25 18:02:56

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