scholarly journals Extending chemical perturbations of the ubiquitin fitness landscape in a classroom setting reveals new constraints on sequence tolerance

Biology Open ◽  
2018 ◽  
Vol 7 (7) ◽  
pp. bio036103 ◽  
Author(s):  
David Mavor ◽  
Kyle A. Barlow ◽  
Daniel Asarnow ◽  
Yuliya Birman ◽  
Derek Britain ◽  
...  
2017 ◽  
Author(s):  
David Mavor ◽  
Kyle A. Barlow ◽  
Daniel Asarnow ◽  
Yuliya Birman ◽  
Derek Britain ◽  
...  

AbstractAlthough the primary protein sequence of ubiquitin (Ub) is extremely stable over evolutionary time, it is highly tolerant to mutation during selection experiments performed in the laboratory. We have proposed that this discrepancy results from the difference between fitness under laboratory culture conditions and the selective pressures in changing environments over evolutionary time scales. Building on our previous work (Mavor et al 2016), we used deep mutational scanning to determine how twelve new chemicals (3-Amino-1,2,4-triazole, 5-fluorocytosine, Amphotericin B, CaCl2, Cerulenin, Cobalt Acetate, Menadione, Nickel Chloride, p-fluorophenylalanine, Rapamycin, Tamoxifen, and Tunicamycin) reveal novel mutational sensitivities of ubiquitin residues. We found sensitization of Lys63 in eight new conditions. In total, our experiments have uncovered a sensitizing condition for every position in Ub except Ser57 and Gln62. By determining the Ubiquitin fitness landscape under different chemical constraints, our work helps to resolve the inconsistencies between deep mutational scanning experiments and sequence conservation over evolutionary timescales.Builds onMavor D, Barlow KA, Thompson S, Barad BA, Bonny AR, Cario CL, Gaskins G, Liu Z, Deming L, Axen SD, Caceres E, Chen W, Cuesta A, Gate R, Green EM, Hulce KR, Ji W, Kenner LR, Mensa B, Morinishi LS, Moss SM, Mravic M, Muir RK, Niekamp S, Nnadi CI, Palovcak E, Poss EM, Ross TD, Salcedo E, See S, Subramaniam M, Wong AW, Li J, Thorn KS, Conchúir SÓ, Roscoe BP, Chow ED, DeRisi JL, Kortemme T, Bolon DN, Fraser JS. Determination of Ubiquitin Fitness Landscapes Under Different Chemical Stresses in a Classroom Setting. eLife. 2016.Impact StatementWe organized a project-based course that used deep mutational scanning in multiple chemical conditions to resolve the inconsistencies between tolerance to mutations in laboratory conditions and sequence conservation over evolutionary timescales.


1991 ◽  
Vol 22 (4) ◽  
pp. 277-277 ◽  
Author(s):  
Sharon L. Wadle

Lack of training is only an excuse for not collaborating outside of the therapy room. With our present training, speech-language clinicians have many skills to share in the regular classroom setting. This training has provided skills in task analysis, a language focus, an appreciation and awareness of individual differences in learning, and motivational techniques.


2010 ◽  
Vol 19 (4) ◽  
pp. 108-114 ◽  
Author(s):  
Lisa M. Mellman ◽  
Laura S. DeThorne ◽  
Julie A. Hengst

Abstract The present qualitative study was designed to examine augmentative and alternative communication (AAC) practices, particularly surrounding speech-generating devices (SGDs), in the classroom setting. We focused on three key child participants, their classroom teachers, and associated speech-language pathologists across three different schools. In addition to semi-structured interviews of all participants, six classroom observations per child were completed. Data were coded according to both pre-established and emergent themes. Four broad themes emerged: message-focused AAC use, social interactions within the classroom community, barriers to successful AAC-SGD use, and missed opportunities. Findings revealed a lack of SGD use in the classroom for two children as well as limited social interaction across all cases. We conclude by highlighting the pervasive sense of missed opportunities across these classroom observations and yet, at the same time, the striking resiliency of communicative effort in these cases.


2008 ◽  
Vol 11 (2) ◽  
pp. 61-66
Author(s):  
Jennifer C. Friberg

Abstract The use of podcasting is incredibly widespread, with experts estimating that 60 million Americans will be using podcasting in some form by 2010. The use of podcasting has grown beyond entertainment to become an educational tool, showing promise as a way to disseminate information and create networks of professional learners. However, despite the growing clinical and educational uses of podcasting in other professional disciplines, podcasting is being used primarily as a continuing education tool for speech-language pathologists and audiologists at this time. This article provides guidelines and examines the potential applications for use of podcasting in teaching and learning in communication sciences and disorders.


2016 ◽  
Vol 1 (13) ◽  
pp. 122-129 ◽  
Author(s):  
Wendy Chase ◽  
Lucinda Soares Gonzales

This article will describe the approach to dysphagia education in a classroom setting at the University of Connecticut (UCONN), explore the disparity between student performance in schools vs. health care settings that was discovered at UCONN, and offer suggestions for practicum supervisors in medical settings to enhance student acquisition of competence.


Author(s):  
Witri Handayani

Internet use for promoting students’ autonomy in language learning has been a great phenomenon to discuss. Many researches have been conducted about this issue. Now the tendency is pointed out specifically for improving students’ competency in speaking. Speaking is normally learned in the classroom setting in which learners have interlocutor as their speaking partner and under direct supervision from the lecturer. The discussion bellow will concern about some internet links that can be used for speaking study. The learners can study by using these internet links independently and record their own voice and video for their own self- assessment. They choose their own target and links to access and determine their own learning target. In the meantime, they also collect the recording to their teacher for assessment purpose.


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