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  • 1
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    Role of the myosin assembly protein UNC-45 as a molecular chaperone for myosin (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-01-26
    Description: The organization of myosin into motile cellular structures requires precise temporal and spatial regulation. Proteins containing a UCS (UNC-45/CRO1/She4p) domain are necessary for the incorporation of myosin into the contractile ring during cytokinesis and into thick filaments during muscle development. We report that the carboxyl-terminal regions of UNC-45 bound and exerted chaperone activity on the myosin head. The amino-terminal tetratricopeptide repeat domain of UNC-45 bound the molecular chaperone Hsp90. Thus, UNC-45 functions both as a molecular chaperone and as an Hsp90 co-chaperone for myosin, which can explain previous findings of altered assembly and decreased accumulation of myosin in UNC-45 mutants of Caenorhabditis elegans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barral, Jose M -- Hutagalung, Alex H -- Brinker, Achim -- Hartl, F Ulrich -- Epstein, Henry F -- New York, N.Y. -- Science. 2002 Jan 25;295(5555):669-71.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, TX 77030, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11809970" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Motifs ; Amino Acid Sequence ; Animals ; Binding Sites ; Caenorhabditis elegans/genetics/*metabolism ; Caenorhabditis elegans Proteins/chemistry/genetics/*metabolism ; Cell Line ; Cloning, Molecular ; HSP70 Heat-Shock Proteins/genetics/metabolism ; HSP90 Heat-Shock Proteins/genetics/metabolism ; Molecular Chaperones/chemistry/genetics/*metabolism ; Molecular Sequence Data ; Myosins/*metabolism ; Peptide Fragments/metabolism ; Protein Binding ; Protein Structure, Tertiary ; Recombinant Proteins/chemistry/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Non-optimal codon usage affects expression, structure and function of clock protein FRQ (2013)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2013-02-19
    Description: Codon-usage bias has been observed in almost all genomes and is thought to result from selection for efficient and accurate translation of highly expressed genes. Codon usage is also implicated in the control of transcription, splicing and RNA structure. Many genes exhibit little codon-usage bias, which is thought to reflect a lack of selection for messenger RNA translation. Alternatively, however, non-optimal codon usage may be of biological importance. The rhythmic expression and the proper function of the Neurospora FREQUENCY (FRQ) protein are essential for circadian clock function. Here we show that, unlike most genes in Neurospora, frq exhibits non-optimal codon usage across its entire open reading frame. Optimization of frq codon usage abolishes both overt and molecular circadian rhythms. Codon optimization not only increases FRQ levels but, unexpectedly, also results in conformational changes in FRQ protein, altered FRQ phosphorylation profile and stability, and impaired functions in the circadian feedback loops. These results indicate that non-optimal codon usage of frq is essential for its circadian clock function. Our study provides an example of how non-optimal codon usage functions to regulate protein expression and to achieve optimal protein structure and function.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3629845/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3629845/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhou, Mian -- Guo, Jinhu -- Cha, Joonseok -- Chae, Michael -- Chen, She -- Barral, Jose M -- Sachs, Matthew S -- Liu, Yi -- GM062591/GM/NIGMS NIH HHS/ -- GM068496/GM/NIGMS NIH HHS/ -- GM47498/GM/NIGMS NIH HHS/ -- P01 GM068087/GM/NIGMS NIH HHS/ -- P30 AG024832/AG/NIA NIH HHS/ -- R01 GM047498/GM/NIGMS NIH HHS/ -- R01 GM062591/GM/NIGMS NIH HHS/ -- R01 GM068496/GM/NIGMS NIH HHS/ -- R01 GM084283/GM/NIGMS NIH HHS/ -- England -- Nature. 2013 Mar 7;495(7439):111-5. doi: 10.1038/nature11833. Epub 2013 Feb 17.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physiology, The University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, Texas 75390, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23417067" target="_blank"〉PubMed〈/a〉
    Keywords: CLOCK Proteins/chemistry/*genetics/metabolism ; Circadian Clocks/genetics/physiology ; Circadian Rhythm/genetics/physiology ; Codon/*genetics ; Feedback, Physiological ; Fungal Proteins/*chemistry/genetics/*metabolism ; *Gene Expression Regulation, Fungal ; *Neurospora crassa/chemistry/genetics/metabolism ; Open Reading Frames ; Phosphorylation ; Protein Conformation ; Protein Stability ; Trypsin/metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 3
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    Protein folding. Translational tuning optimizes nascent protein folding in cells (2015)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2015-04-25
    Description: In cells, biosynthetic machinery coordinates protein synthesis and folding to optimize efficiency and minimize off-pathway outcomes. However, it has been difficult to delineate experimentally the mechanisms responsible. Using fluorescence resonance energy transfer, we studied cotranslational folding of the first nucleotide-binding domain from the cystic fibrosis transmembrane conductance regulator. During synthesis, folding occurred discretely via sequential compaction of N-terminal, alpha-helical, and alpha/beta-core subdomains. Moreover, the timing of these events was critical; premature alpha-subdomain folding prevented subsequent core formation. This process was facilitated by modulating intrinsic folding propensity in three distinct ways: delaying alpha-subdomain compaction, facilitating beta-strand intercalation, and optimizing translation kinetics via codon usage. Thus, de novo folding is translationally tuned by an integrated cellular response that shapes the cotranslational folding landscape at critical stages of synthesis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kim, Soo Jung -- Yoon, Jae Seok -- Shishido, Hideki -- Yang, Zhongying -- Rooney, LeeAnn A -- Barral, Jose M -- Skach, William R -- P30CA069533/CA/NCI NIH HHS/ -- P30EYE010572/PHS HHS/ -- R01DK51818/DK/NIDDK NIH HHS/ -- R01GM53457/GM/NIGMS NIH HHS/ -- S10OD012246/OD/NIH HHS/ -- S10RR025571/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 2015 Apr 24;348(6233):444-8. doi: 10.1126/science.aaa3974.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Molecular Biology, Oregon Health and Science University (OHSU), Portland, OR 97239, USA. ; Department of Neuroscience and Cell Biology, University of Texas Medical Branch, Galveston, TX 77550-0620, USA. Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, TX 77550-0620, USA. ; Department of Biochemistry and Molecular Biology, Oregon Health and Science University (OHSU), Portland, OR 97239, USA. Cystic Fibrosis Foundation Therapeutics, Bethesda, MD 20814, USA. skachw@ohsu.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25908822" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Codon/chemistry/*metabolism ; Cystic Fibrosis Transmembrane Conductance ; Regulator/*biosynthesis/*chemistry/genetics ; Fluorescence Resonance Energy Transfer ; Humans ; Kinetics ; Molecular Sequence Data ; *Peptide Chain Elongation, Translational ; *Protein Folding ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Ribosomes/chemistry/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 4
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    Ubiquilin-1 regulates amyloid precursor protein maturation and degradation by stimulating K63-linked polyubiquitination of lysine 688 (2012)
    National Academy of Sciences
    Details
    Publication Date: 2012-07-30
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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  • 5
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    Ubiquilin-1 regulates APP trafficking [Neuroscience] (2012)
    National Academy of Sciences
    Details
    Publication Date: 2012-08-15
    Description: The pathogenesis of Alzheimer’s disease (AD) is associated with proteolytic processing of the amyloid precursor protein (APP) to an amyloidogenic peptide termed Aβ. Although mutations in APP and the secretase enzymes that mediate its processing are known to result in familial forms of AD, the mechanisms underlying the more common...
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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  • 6
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    Protein machines and self assembly in muscle organization (1999)
    In:  Other Sources
    Details
    Publication Date: 2011-08-24
    Description: The remarkable order of striated muscle is the result of a complex series of protein interactions at different levels of organization. Within muscle, the thick filament and its major protein myosin are classical examples of functioning protein machines. Our understanding of the structure and assembly of thick filaments and their organization into the regular arrays of the A-band has recently been enhanced by the application of biochemical, genetic, and structural approaches. Detailed studies of the thick filament backbone have shown that the myosins are organized into a tubular structure. Additional protein machines and specific myosin rod sequences have been identified that play significant roles in thick filament structure, assembly, and organization. These include intrinsic filament components, cross-linking molecules of the M-band and constituents of the membrane-cytoskeleton system. Muscle organization is directed by the multistep actions of protein machines that take advantage of well-established self-assembly relationships. Copyright 1999 John Wiley & Sons, Inc.
    Keywords: Life Sciences (General)
    Type: BioEssays : news and reviews in molecular, cellular and developmental biology (ISSN 0265-9247); Volume 21; 10; 813-23
    Format: text
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    NASA TECHNICAL REPORTS
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