title: Tight regulation of unstructured proteins: from transcript synthesis to protein degradation.
abstract: Altered abundance of several intrinsically unstructured proteins (IUPs) has been associated with perturbed cellular signaling that may lead to pathological conditions such as cancer. Therefore, it is important to understand how cells precisely regulate the availability of IUPs. We observed that regulation of transcript clearance, proteolytic degradation, and translational rate contribute to controlling the abundance of IUPs, some of which are present in low amounts and for short periods of time. Abundant phosphorylation and low stochasticity in transcription and translation indicate that the availability of IUPs can be finely tuned. Fidelity in signaling may require that most IUPs be available in appropriate amounts and not present longer than needed.
authors.affiliation: Medical Research Council (MRC) Laboratory of Molecular Biology, Hills Road, Cambridge CB2 0QH, UK. jgsponer@mrc-lmb.cam.ac.uk
authors.forename: Jörg
authors.initials: J
authors.lastname: Gsponer
authors.forename: Matthias E
authors.initials: ME
authors.lastname: Futschik
authors.forename: Sarah A
authors.initials: SA
authors.lastname: Teichmann
authors.forename: M Madan
authors.initials: MM
authors.lastname: Babu
mesh_terms: D000595:Amino Acid Sequence; D002453:Cell Cycle; D019295:Computational Biology; D005800:Genes, Fungal; D006801:Humans; D010766:Phosphorylation; D014176:Protein Biosynthesis; D011487:Protein Conformation; D011494:Protein Kinases / Q000378:metabolism; D020543:Proteome / Q000737:chemistry; D012331:RNA, Fungal / Q000235:genetics / Q000378:metabolism; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D012441:Saccharomyces cerevisiae / Q000737:chemistry / Q000166:cytology / Q000235:genetics / Q000378:metabolism*; D029701:Saccharomyces cerevisiae Proteins / Q000737:chemistry* / Q000235:genetics / Q000378:metabolism*; D029702:Schizosaccharomyces pombe Proteins / Q000737:chemistry / Q000378:metabolism; D015398:Signal Transduction; D014158:Transcription, Genetic
chemical_list: D020543:Proteome; D012331:RNA, Fungal; D012333:RNA, Messenger; D029701:Saccharomyces cerevisiae Proteins; D029702:Schizosaccharomyces pombe Proteins; D011494:Protein Kinases