158 research outputs found
Basic Cell and Molecular Biology 5e: What We Know and How We Find Out
https://dc.uwm.edu/biosci_facbooks_bergtrom/1014/thumbnail.jp
Annotated Cell and Molecular Biology 5e: What We Know and How We Found Out
https://dc.uwm.edu/biosci_facbooks_bergtrom/1013/thumbnail.jp
Bioinformatics
This book is divided into different research areas relevant in Bioinformatics such as biological networks, next generation sequencing, high performance computing, molecular modeling, structural bioinformatics, molecular modeling and intelligent data analysis. Each book section introduces the basic concepts and then explains its application to problems of great relevance, so both novice and expert readers can benefit from the information and research works presented here
Program and Proceedings: The Nebraska Academy of Sciences 1880-2013
PROGRAM
FRIDAY, APRIL 19, 2013
REGISTRATION FOR ACADEMY, Lobby of Lecture wing, Olin Hall
Aeronautics and Space Science, Session A, Olin 249
Aeronautics and Space Science, Session B, Olin 224
Collegiate Academy, Biology Session A, Olin B
Biological and Medical Sciences, Session A, Olin 112
Biological and Medical Sciences, Session B, Smith Callen Conference Center
NE Chapter, Nat\u27l Council For Geographic Education, Olin 325
Junior Academy, Judges Check-In, Olin 219
Junior Academy, Senior High REGISTRATION, Olin Hall Lobby
Chemistry and Physics, Section A, Chemistry, Olin A
Chemistry and Physics, Section B, Physics, Planetarium
Collegiate Academy, Chemistry and Physics, Session A, Olin 324
Junior Academy, Senior High Competition, Olin 124, Olin 131
Aeronautics and Space Science, Poster Session, Olin 249
Anthropology, Olin 111
NWU Health and Sciences Graduate School Fair, Olin and Smith Curtiss Halls
Aeronautics and Space Science, Poster Session, Olin 249
MAIBEN MEMORIAL LECTURE, OLIN B
Bob Feurer, North Bend High School, Making People Smarter Using Habits of Mind
LUNCH, PATIO ROOM, STORY STUDENT CENTER
(pay and carry tray through cafeteria line, or pay at NAS registration desk)
Aeronautics Group, Sunflower Room
Biological and Medical Sciences, Session C, Olin 112
Biological and Medical Sciences, Session D, Smith Callen Conference Center
Chemistry and Physics, Section A, Chemistry, Olin A
Collegiate Academy, Biology Session A, Olin B
Collegiate Academy, Biology Session B, Olin 249
Collegiate Academy, Chemistry and Physics, Session B, Olin 324
Junior Academy, Judges Check-In, Olin 219
Junior Academy, Junior High REGISTRATION, Olin Hall Lobby
Junior Academy, Senior High Competition, (Final), Olin 110
Anthropology, Olin 111
Teaching of Science and Math, Olin 224
Applied Science and Technology, Olin 325
Junior Academy, Junior High Competition, Olin 124, Olin 131
NJAS Board/Teacher Meeting, Olin 219
BUSINESS MEETING, OLIN B
AWARDS RECEPTION for NJAS, Scholarships, Members, Spouses, and Guests
First United Methodist Church, 2723 N 50th Street, Lincoln, N
Mechanisms and design of Tc1/mariner transposons for genome engineering
Transposons are DNA segments that autonomously move within and between genomes across the tree of life. Tc1/mariners in particular have frequently crossed species boundaries in nature and provide powerful broad-host-range genetic vectors. Among them, the Sleeping Beauty (SB) transposon inserts DNA in vertebrate genomes with extraordinarily high efficiency, making it a prime genetic tool with applications expanding to gene therapy clinical trials. Nevertheless, the molecular principles of SB’s distinctive activity remain elusive, greatly hampering its further development.
In the first part of this thesis, I investigated the molecular mechanisms of the SB transposon in comparison to Human mariner 1 (Hsmar1), a representative transposon of the same superfamily. Using biochemical and biophysical techniques together with fluorescence-based assays, I have characterized the initial steps of SB and Hsmar1 transposition and shown that the two transposons assemble their molecular machineries (or transpososomes) differently. By combining crystallographic data and SAXS-based modelling, I visualized the structural basis of these differences and explained how transpososome assembly is coupled to catalysis in the Hsmar1 transposon. Moreover, the data demonstrated that the unique assembly pathway of SB largely contributes to its exceptional efficiency and that it can be chemically modulated to control insertion rates in living cells. I have further reconstituted in vitro the ordered series of events comprising SB transposition, including transposon end binding, cleavage, and integration, and dissected previously unrevealed molecular features of the process.
In the second part of my work, building on these mechanistic insights, I developed a novel SB transposase variant (hsSB) by employing a structure-based protein design approach. Using hsSB allowed for establishing a new genome engineering method based on the direct delivery of recombinant SB protein to cells. We showed that this new method, named SBprotAct, provides safer and more controlled genome modification of several cell types (including stem cells and human T cells), as compared to the state-of-art technology.
This work sheds first light on the molecular determinants of SB transposition and its hyper-activity, providing a unique resource for the rational design of improved genome engineering platforms for research and medicine
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