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Appears in Networks 4

In-Edges 15

a(GO:lysosome) increases deg(p(MESH:Proteins, pmod(Ub))) View Subject | View Object

It has recently become appreciated that ubiquitination of proteins by covalent modification tags them for elimination not only through the proteasome (the ubiquitin–proteasome system or UPS) but also through the lysosomal system. PubMed:22908190

bp(GO:"lysosomal protein catabolic process") decreases p(MESH:Proteins, pmod(Ub)) View Subject | View Object

In APP transgenic mouse models of AD, undigested autophagy substrates including LC3-II, p62, and ubiquitinated proteins accumulate in neuronal AVs, establishing that autophagic protein turnover in lysosomes is impeded (Yang et al. 2011). PubMed:22908190

bp(GO:"proteasome-mediated ubiquitin-dependent protein catabolic process") increases deg(p(MESH:Proteins, pmod(Ub))) View Subject | View Object

It has recently become appreciated that ubiquitination of proteins by covalent modification tags them for elimination not only through the proteasome (the ubiquitin–proteasome system or UPS) but also through the lysosomal system. PubMed:22908190

complex(GO:"proteasome complex") increases deg(p(MESH:Proteins, pmod(Ub))) View Subject | View Object

The proteasome selectively degrades normal proteins (mainly those with short half-lives) and abnormal proteins, which are earmarked for elimination by a process involving their conjugation to ubiquitin (Ub; Goldberg 2003). PubMed:22908190

p(MESH:Proteins, pmod(Ub)) increases deg(p(MESH:Proteins, pmod(Ub))) View Subject | View Object

Third, there is ligation of Ub with an epsilon-amino group of lysine in the target protein by an E3 ligase. E3 ligase binds both the target protein and the E2–Ub complex; thousands of substrate- specific E3s ensure selective protein tagging and degradation. PubMed:22908190

complex(a(MESH:Proteins), a(MESH:Ubiquitin), p(HGNC:UBA2), p(HGNC:UBA3)) increases p(MESH:Proteins, pmod(Ub)) View Subject | View Object

Third, there is ligation of Ub with an epsilon-amino group of lysine in the target protein by an E3 ligase. E3 ligase binds both the target protein and the E2–Ub complex; thousands of substrate- specific E3s ensure selective protein tagging and degradation. PubMed:22908190

composite(a(CHEBI:lactacystin), a(CHEBI:sirolimus)) decreases p(MESH:Proteins, pmod(Ub)) View Subject | View Object

Similar results have recently been observed in vitro using the proteasome inhibitor lactacystin, as pre-treatment with rapamycin attenuates lactacystin-induced apoptosis and reduces lactacystin-induced ubiquitinated protein aggregation [74]. PubMed:18930136

p(HGNC:HDAC6) increases tloc(p(MESH:Proteins, pmod(Ub)), fromLoc(GO:cytoplasm), toLoc(GO:lysosome)) View Subject | View Object

HDAC6 activity appears to be important for trafficking ubiquitinated proteins and lysosomes in vitro and this has led to the suggestion that HDAC6 coordinates delivery of substrates to autophagic machinery [64,70,78]. PubMed:18930136

p(HGNC:SQSTM1) increases deg(p(MESH:Proteins, pmod(Ub))) View Subject | View Object

Thus, it has been suggested that p62 provides a key link between autophagy and the UPS by facilitating autophagic degradation of ubiquitinated proteins. PubMed:18930136

Out-Edges 2

p(MESH:Proteins, pmod(Ub)) increases deg(p(MESH:Proteins, pmod(Ub))) View Subject | View Object

Third, there is ligation of Ub with an epsilon-amino group of lysine in the target protein by an E3 ligase. E3 ligase binds both the target protein and the E2–Ub complex; thousands of substrate- specific E3s ensure selective protein tagging and degradation. PubMed:22908190

p(MESH:Proteins, pmod(Ub)) increases complex(a(GO:"proteasome regulatory particle"), p(MESH:Proteins, pmod(Ub))) View Subject | View Object

Ubiquitinated target proteins bind to the 19S cap (RP), which has a Ub binding site and ATPase activity, and this leads to cleavage of Ub moieties from the target by deubiquitinating enzymes, unfolds the polypeptides and sends them to the narrow channel of the 20S core particle. PubMed:22908190

About

BEL Commons is developed and maintained in an academic capacity by Charles Tapley Hoyt and Daniel Domingo-Fernández at the Fraunhofer SCAI Department of Bioinformatics with support from the IMI project, AETIONOMY. It is built on top of PyBEL, an open source project. Please feel free to contact us here to give us feedback or report any issues. Also, see our Publishing Notes and Data Protection information.

If you find BEL Commons useful in your work, please consider citing: Hoyt, C. T., Domingo-Fernández, D., & Hofmann-Apitius, M. (2018). BEL Commons: an environment for exploration and analysis of networks encoded in Biological Expression Language. Database, 2018(3), 1–11.