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Molecular Mechanism of CB1 and G-protein using MD simulation and Coevolution approach
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dc.contributor.advisor 유우경 -
dc.contributor.author Sangho Ji -
dc.date.accessioned 2025-02-28T21:00:54Z -
dc.date.available 2025-02-28T21:00:54Z -
dc.date.issued 2025 -
dc.identifier.uri http://hdl.handle.net/20.500.11750/57957 -
dc.identifier.uri http://dgist.dcollection.net/common/orgView/200000841438 -
dc.description CB1, GPCR, MD simulation -
dc.description.tableofcontents Ⅰ. General introduction 1
1.1 G-protein coupled receptor (GPCR) 1
1.2 Cannabinoid receptor type 1 (CB1) 1
1.3 Molecular dynamics simulation 2
1.4 Aim of the research 3

PART Ⅰ. Understanding the role of the CB1 toggle switch in interaction networks using molecular dynamics simulation 5

Ⅰ. Introduction 5
1.1 Introduction: Toggle switch 5
Ⅱ. Method 8
2.1 Molecular dynamics simulation 8
2.1.1 Preparation of ligand-bound CB1 complex structure 8
2.1.2 System building and toggle switch mutation 8
2.1.3 Molecular dynamics simulation 8
2.2 Analysis of the MD simulation trajectory 9
2.2.1 CB1 substructure analysis 9
2.2.2 Calculating energy network 12
2.2.3 Visualization 12
Ⅲ. Results 13
3.1 Toggle switch-dependent molecular dynamics of the CB1 13
3.2 The change of helical orientations by toggle switch mutation 17
3.3 Analysis of interaction among CB1 helices and loops 22
3.4 The residual interaction network around Na+ pocket and extracellular loop 24
Ⅳ. Discussion 31
4.1 Discussion 31

PART Ⅱ. Elucidation molecular mechanism of activation CB1-G protein complex using MD simulation and Coevolution approach 37

Ⅰ. Introduction 37
1.1 Introduction: CB1-G protein 37
1.2 Statistical coupling analysis (SCA) 38
Ⅱ. Method 39
2.1 Molecular dynamics simulation 39
2.1.1 CB1-G protein complex structure preparation 39
2.1.2 Hetero molecule and Membrane system building 39
2.1.3 Molecular dynamics simulation 40
2.2 Analysis of the MD simulation trajectory 41
2.2.1 CB1-Gprotein structure analysis 41
2.2.2 Calculating energy network 44
2.2.3 Visualization 44
2.3 Statistical Coevolution Analysis 44
Ⅲ. Results 46
3.1 Structural dynamics of closed and open CB1-G protein complex 46
3.2 Difference residual interaction within CB1-G protein complex 50
3.2.1 Different interaction network of CB1 between closed and open complex 50
3.2.2 Different interaction network of closed and open Gα protein 55
3.3 Dynamic interaction change around GDP region in closed Gα protein 60
3.4 Identifying functional domains of Gα protein by SCA approach 64
Ⅳ. Discussion 70
4.1 Discussion 70
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dc.format.extent 79 -
dc.language eng -
dc.publisher DGIST -
dc.title Molecular Mechanism of CB1 and G-protein using MD simulation and Coevolution approach -
dc.title.alternative 분자 동역학 시뮬레이션과 공진화 접근법을 활용한 CB1-G 단백질 활성화 메커니즘 이해 -
dc.type Thesis -
dc.identifier.doi 10.22677/THESIS.200000841438 -
dc.description.degree Doctor -
dc.contributor.department Department of Brain Sciences -
dc.identifier.bibliographicCitation Sangho Ji. (2025). Molecular Mechanism of CB1 and G-protein using MD simulation and Coevolution approach. doi: 10.22677/THESIS.200000841438 -
dc.contributor.coadvisor Hyeon-Ae Jeon -
dc.date.awarded 2025-02-01 -
dc.publisher.location Daegu -
dc.description.database dCollection -
dc.citation XT.BD 지52 202502 -
dc.date.accepted 2025-01-20 -
dc.contributor.alternativeDepartment 뇌과학과 -
dc.subject.keyword CB1, GPCR, MD simulation -
dc.contributor.affiliatedAuthor Sangho Ji -
dc.contributor.affiliatedAuthor Wookyung Yu -
dc.contributor.affiliatedAuthor Hyeon-Ae Jeon -
dc.contributor.alternativeName 지상호 -
dc.contributor.alternativeName Wookyung Yu -
dc.contributor.alternativeName 전현애 -
dc.rights.embargoReleaseDate 2026-02-28 -
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