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The Application of Chemoproteomic Techniques to Investigate Protein-Protein Interactions Including but Not Limited to Degradation, Inhibition, and Binding
The Application of Chemoproteomic Techniques to Investigate Protein-Protein Interactions I...
The Application of Chemoproteomic Techniques to Investigate Protein-Protein Interactions Including but Not Limited to Degradation, Inhibition, and Binding

Detailed Information

자료유형  
 학위논문 서양
최종처리일시  
20260202103558
ISBN  
9798288864674
DDC  
540
저자명  
Thomas, Vienna C. J. X. M.
서명/저자  
The Application of Chemoproteomic Techniques to Investigate Protein-Protein Interactions Including but Not Limited to Degradation, Inhibition, and Binding
발행사항  
[Sl] : University of California, Berkeley, 2025
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2025
형태사항  
200 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-01, Section: B.
주기사항  
Includes supplementary digital materials.
주기사항  
Advisor: Nomura, Daniel K.;Doudna, Jennifer A.
학위논문주기  
Thesis (Ph.D.)--University of California, Berkeley, 2025.
초록/해제  
요약Small molecules capable of modulating protein fate and function have expanded the scope of chemical biology. Covalent chemoproteomic strategies offer a means to systematically identify ligandable sites, develop proximity-based modalities, and interrogate protein-level mechanisms with proteome-wide resolution. This dissertation describes three efforts to apply covalent chemistry, structural constraint, and proteomics to probe and perturb protein behavior.First, the impact of stereochemistry on molecular recognition is examined through the synthesis and profiling of all four stereoisomers of vicinal difluorides. These conformationally biased motifs were incorporated into chemical probes and shown to engage distinct protein targets in a stereoselective manner, including TXNRD2, highlighting the influence of geometric constraints on target engagement.Second, chemoproteomic screening identified a covalent ligand for the E3 ligase KLHL20, which was used to develop heterobifunctional degraders. While degradation of the intended target was observed, the responsible ligase could not be conclusively identified, underscoring challenges in mechanistic validation of proximity-based degraders. Third, proximity labelling proteomics was used to characterize the intracellular trafficking of Cas9 ribonucleoprotein complexes delivered by distinct modalities. Time- and delivery-dependent changes in the Cas9 interactome revealed differences in nuclear import and degradation, providing insight into how delivery strategy shapes pharmacokinetic behaviour. Together, these studies integrate covalent ligand discovery, stereochemical design, and proteomic analysis to expand the toolkit for controlling and investigating protein function, and to inform the rational development of proximity-based therapeutic strategies.
일반주제명  
Chemistry
일반주제명  
Biochemistry
일반주제명  
Biology
일반주제명  
Pharmacology
키워드  
CRISPR-Cas9
키워드  
Induced proximity
키워드  
PROTAC
키워드  
Protein-protein interactions
키워드  
Targeted protein degradation
키워드  
TMT-based quantitative proteomics
기타저자  
University of California, Berkeley Chemistry
기본자료저록  
Dissertations Abstracts International. 87-01B.
전자적 위치 및 접속  
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MARC

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■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a540
■1001  ▼aThomas,  Vienna  C.  J.  X.    M.
■24510▼aThe  Application  of  Chemoproteomic  Techniques  to  Investigate  Protein-Protein  Interactions  Including  but  Not  Limited  to  Degradation,  Inhibition,  and  Binding
■260    ▼a[Sl]▼bUniversity  of  California,  Berkeley▼c2025
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2025
■300    ▼a200  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-01,  Section:  B.
■500    ▼aIncludes  supplementary  digital  materials.
■500    ▼aAdvisor:  Nomura,  Daniel  K.;Doudna,  Jennifer  A.
■5021  ▼aThesis  (Ph.D.)--University  of  California,  Berkeley,  2025.
■520    ▼aSmall  molecules  capable  of  modulating  protein  fate  and  function  have  expanded  the  scope  of  chemical  biology.  Covalent  chemoproteomic  strategies  offer  a  means  to  systematically  identify  ligandable  sites,  develop  proximity-based  modalities,  and  interrogate  protein-level  mechanisms  with  proteome-wide  resolution.  This  dissertation  describes  three  efforts  to  apply  covalent  chemistry,  structural  constraint,  and  proteomics  to  probe  and  perturb  protein  behavior.First,  the  impact  of  stereochemistry  on  molecular  recognition  is  examined  through  the  synthesis  and  profiling  of  all  four  stereoisomers  of  vicinal  difluorides.  These  conformationally  biased  motifs  were  incorporated  into  chemical  probes  and  shown  to  engage  distinct  protein  targets  in  a  stereoselective  manner,  including  TXNRD2,  highlighting  the  influence  of  geometric  constraints  on  target  engagement.Second,  chemoproteomic  screening  identified  a  covalent  ligand  for  the  E3  ligase  KLHL20,  which  was  used  to  develop  heterobifunctional  degraders.  While  degradation  of  the  intended  target  was  observed,  the  responsible  ligase  could  not  be  conclusively  identified,  underscoring  challenges  in  mechanistic  validation  of  proximity-based  degraders. Third,  proximity  labelling  proteomics  was  used  to  characterize  the  intracellular  trafficking  of  Cas9  ribonucleoprotein  complexes  delivered  by  distinct  modalities.  Time-  and  delivery-dependent  changes  in  the  Cas9  interactome  revealed  differences  in  nuclear  import  and  degradation,  providing  insight  into  how  delivery  strategy  shapes  pharmacokinetic  behaviour. Together,  these  studies  integrate  covalent  ligand  discovery,  stereochemical  design,  and  proteomic  analysis  to  expand  the  toolkit  for  controlling  and  investigating  protein  function,  and  to  inform  the  rational  development  of  proximity-based  therapeutic  strategies.
■590    ▼aSchool  code:  0028.
■650  4▼aChemistry
■650  4▼aBiochemistry
■650  4▼aBiology
■650  4▼aPharmacology
■653    ▼aCRISPR-Cas9
■653    ▼aInduced  proximity
■653    ▼aPROTAC
■653    ▼aProtein-protein  interactions
■653    ▼aTargeted  protein  degradation
■653    ▼aTMT-based  quantitative  proteomics
■690    ▼a0485
■690    ▼a0487
■690    ▼a0306
■690    ▼a0419
■71020▼aUniversity  of  California,  Berkeley▼bChemistry.
■7730  ▼tDissertations  Abstracts  International▼g87-01B.
■790    ▼a0028
■791    ▼aPh.D.
■792    ▼a2025
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17357770▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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