Structural Studies of Ion Channel Assembly and Signaling Complexes
离子通道组装和信号复合物的结构研究
基本信息
- 批准号:9318758
- 负责人:
- 金额:$ 54.37万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:2005
- 资助国家:美国
- 起止时间:2005-07-01 至 2022-01-31
- 项目状态:已结题
- 来源:
- 关键词:AddressAdoptedAffectAntibodiesArchitectureArrhythmiaBiochemicalBiophysicsC-terminalCalciumCalmodulinCalorimetryCardiovascular DiseasesCardiovascular systemCell membraneCodeComplexCongestive Heart FailureCytoplasmic TailDevelopmentDiseaseDissectionDrug TargetingDrug usageElectron Spin Resonance SpectroscopyElectronsElectrophysiology (science)ElementsEpilepsyFamilyFoundationsG protein coupled receptor kinaseGated Ion ChannelGoalsHumanHypertensionIon ChannelIon Channel GatingKnowledgeLengthMacromolecular ComplexesMeasurementMembraneMolecularMolecular ConformationMood DisordersMutagenesisMutationNeckNervous system structurePainPhage DisplayPhysiologyPrevalencePropertyProtein EngineeringReactionRegulationResolutionRestRoentgen RaysRoleShapesSignal PathwaySignal TransductionSignaling ProteinSodium ChannelStructureTRP channelTemperatureTestingTherapeutic AgentsTitrationsVoltage-Gated Potassium ChannelWorkX-Ray Crystallographybasechronic paininterdisciplinary approachmembermutantnovelparticleresponsesensorvoltagevoltage gated channel
项目摘要
Project Summary/Abstract
The long‐term goals of this project are to develop a high‐resolution understanding of ion channel function and
regulation. Our studies focus on uncovering the architectural foundations that underlie the modulation of
exemplar classes from the voltage‐gated ion channel (VGIC) superfamily and seek to address the fundamental
question of how conformational changes in channel intracellular domains control and shape VGIC function.
Many VGIC superfamily members, including Kv7 voltage‐gated potassium channels and BacNaV bacterial
voltage‐gated sodium channels, share a common cytoplasmic domain architecture in which the pore domain
and a four‐stranded coiled‐coil frame a metastable membrane proximal domain that acts as a receiver for
modulatory signals. We aim to understand how such metastable domains sense inputs from the calcium
sensor calmodulin in Kv7s and from temperature in BacNaVs and transmit signals to the channel pore. The
prevalence of similar intracellular elements among diverse VGICs suggests that the principles derived from
these studies will have broad impact in defining how such intracellular modules shape channel responses. A
second effort is directed at defining the architecture of a class of intracellular endolysosomal VGICs known as
Two‐Pore‐Channels (TPCs) and that have limited structural characterization. These channels possess a unique
tandem transmembrane architecture and respond to a variety of intracellular signals, including calcium.
Elaboration of the underlying structural framework of exemplar VGICs is essential for understanding how
these and other VGICs are integrated into intracellular signaling pathways and for developing novel ways to
intervene to control channel function. Our efforts encompass a multidisciplinary approach that includes
biochemical, biophysical, X‐ray crystallographic, and cryo‐electronmicroscopy studies to probe structure and
electrophysiological measurements to dissect function. Because of their important role in human physiology,
VGICs are the targets for drugs with great utility for the treatment of cardiac arrhythmias, hypertension,
congestive heart failure, epilepsy, and chronic pain. Thus, understanding their structures and mechanisms of
action at atomic level detail should greatly assist the development of valuable therapeutic agents for a wide
range of human ailments.
项目摘要/摘要
该项目的长期目标是发展对离子通道功能的高分辨率理解和
规定。 我们的研究重点是揭示调制背后的建筑基础
来自电压门控离子通道 (VGIC) 超家族的示例类,并寻求解决基本问题
通道细胞内结构域的构象变化如何控制和塑造 VGIC 功能的问题。
许多 VGIC 超家族成员,包括 Kv7 电压门控钾通道和 BacNaV 细菌
电压门控钠通道具有共同的细胞质结构域,其中孔结构域
和一个四链卷曲螺旋框架,一个亚稳态膜近端域,充当接收器
调制信号。 我们的目标是了解这些亚稳态域如何感知来自钙的输入
Kv7s 中的传感器钙调蛋白和 BacNaVs 中的温度传感器,并将信号传输到通道孔。 这
相似的细胞内元素在不同的 VGIC 中普遍存在,这表明这些原理源自
这些研究将对定义此类细胞内模块如何塑造通道反应产生广泛的影响。 一个
第二项努力旨在定义一类细胞内内溶酶体 VGIC 的结构,称为
双孔通道 (TPC) 和结构表征有限。 这些渠道拥有独特的
串联跨膜结构并响应各种细胞内信号,包括钙。
详细阐述示例 VGIC 的底层结构框架对于理解如何实现这一点至关重要
这些和其他 VGIC 被整合到细胞内信号传导途径中,并用于开发新的方法
干预以控制通道功能。 我们的努力包括多学科方法,其中包括
生物化学、生物物理、X 射线晶体学和冷冻电子显微镜研究,以探测结构和
电生理测量来剖析功能。 由于它们在人类生理学中的重要作用,
VGIC 是治疗心律失常、高血压、
充血性心力衰竭、癫痫和慢性疼痛。 因此,了解它们的结构和机制
原子水平细节的行动应该极大地帮助开发有价值的治疗剂,用于广泛的治疗
一系列人类疾病。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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{{ truncateString('DANIEL L MINOR', 18)}}的其他基金
Genetic and chemical biological studies of K2P structure, function, and modulatio
K2P 结构、功能和调节的遗传和化学生物学研究
- 批准号:
8233320 - 财政年份:2011
- 资助金额:
$ 54.37万 - 项目类别:
Genetic and chemical biological studies of K2P structure, function, andmodulation
K2P 结构、功能和调节的遗传和化学生物学研究
- 批准号:
10612057 - 财政年份:2011
- 资助金额:
$ 54.37万 - 项目类别:
STRUCTURAL AND FUNCTIONAL STUDIES OF ION CHANNELS AND ION CHANNEL DOMAINS
离子通道和离子通道域的结构和功能研究
- 批准号:
8363783 - 财政年份:2011
- 资助金额:
$ 54.37万 - 项目类别:
Genetic and chemical biological studies of K2P structure, function, and modulatio
K2P 结构、功能和调节的遗传和化学生物学研究
- 批准号:
8416387 - 财政年份:2011
- 资助金额:
$ 54.37万 - 项目类别:
Genetic and chemical biological studies of K2P structure, function, and modulation
K2P 结构、功能和调节的遗传和化学生物学研究
- 批准号:
9884602 - 财政年份:2011
- 资助金额:
$ 54.37万 - 项目类别:
Genetic and chemical biological studies of K2P structure, function, and modulatio
K2P 结构、功能和调节的遗传和化学生物学研究
- 批准号:
8611969 - 财政年份:2011
- 资助金额:
$ 54.37万 - 项目类别:
Genetic and chemical biological studies of K2P structure, function, andmodulation
K2P 结构、功能和调节的遗传和化学生物学研究
- 批准号:
10444595 - 财政年份:2011
- 资助金额:
$ 54.37万 - 项目类别:
Genetic and chemical biological studies of K2P structure, function, and modulatio
K2P 结构、功能和调节的遗传和化学生物学研究
- 批准号:
8086057 - 财政年份:2011
- 资助金额:
$ 54.37万 - 项目类别:
STRUCTURAL AND FUNCTIONAL STUDIES OF ION CHANNELS AND ION CHANNEL DOMAINS
离子通道和离子通道域的结构和功能研究
- 批准号:
8169778 - 财政年份:2010
- 资助金额:
$ 54.37万 - 项目类别:
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