Structural Studies of Ion Channel Assembly and Signaling Complexes
Structural Studies of Ion Channel Assembly and Signaling Complexes
批准号:
9318758
负责人:
DANIEL L MINOR
金额:
$54.37万
依托单位国家:
美国
项目类别:
财政年份:
2005
资助国家:
美国
项目状态:
已结题
起止时间:
2005-07-01 至 2022-01-31
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
中文摘要
项目摘要/摘要:
本项目的主要长期目标是对离子通道的功能和功能发展一个高分辨率的理解框架。
监管。在我们的研究中,我们的重点将放在如何揭示建筑基础设施的基础上,这些基础设施是基础设施的基础。
来自全球电压门控离子交换通道(VGIC)的示范课程和超级家庭成员寻求解决这一根本问题的方法。
关于细胞内结构域的构象变化是如何控制VGIC功能的问题。
许多VGIC超级家族成员,包括KV7电压门控钾离子通道和细菌芽胞杆菌。
电压门控的钠离子通道共享一个常见的细胞质离子域结构,在这个体系结构中,胞质离子域是一个重要的结构域。
并建立了一个由四股螺旋线圈组成的框架,在近端区域形成了一个亚稳定的细胞膜,起到了接收器的作用。
调节性信号。我们的目标是进一步了解这种亚稳定的结构域是如何感知来自钙离子的输入的。
Kv7中的感应器和细菌中的钙调素从温度变化中将信号传递给细菌和细菌的毛孔。
在各种不同的VGIC中,类似的细胞内元件的流行程度表明,这些原理是从中衍生出来的。
这些研究还将对定义这些细胞内信号模块如何塑造通道响应产生广泛的影响。
第二项工作是为了定义一种新的体系结构,即一种新的细胞内内溶酶体和VGIC的体系结构。
双孔孔道(TPC)是一种结构性能有限的孔道,这些孔道具有一种独特的力学特性。
Tandem是一种跨膜生物结构,可以对多种细胞内信号做出反应,包括钙。
对示范的VGIC的基本结构和框架框架的阐述对于理解如何实现这一目标是至关重要的。
这些信号和其他VGIC信号被整合到细胞内信号通路中,并用于开发新的信号通路。
干预是为了控制渠道的功能。我们的努力将包括一种新的多学科的管理方法,这包括。
生化、生物物理、X射线、结晶学、电子显微镜和超低温电子显微镜的研究有助于探索它们的结构和功能。
电生理学测量需要仔细分析其功能,因为它们在人类生理中扮演着非常重要的角色。
VGICs是新药的主要靶点,在治疗常见心律失常和高血压方面具有巨大的实用价值。
充血性心力衰竭、癫痫、慢性疼痛等。因此,我们需要了解它们的结构和作用机制。
原子层面和细节层面的行动计划应该在很大程度上帮助世界范围内有价值的治疗性药物的进一步发展。
一系列人类疾病。
英文摘要
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.
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会议论文
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批准号:8233320
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批准号:10444595
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Genetic and chemical biological studies of K2P structure, function, and modulatio
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批准号:8611969
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资助金额:$38.63万
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财政年份:2011
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负责人:DANIEL L MINOR
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依托单位:
Genetic and chemical biological studies of K2P structure, function, and modulatio
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批准号:8086057
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资助金额:$38.63万
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财政年份:2011
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负责人:DANIEL L MINOR
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依托单位:
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批准号:8169778
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项目类别:
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资助金额:$0.18万
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财政年份:2010
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负责人:DANIEL L MINOR
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依托单位:
STRUCTURAL AND FUNCTIONAL STUDIES OF ION CHANNELS AND ION CHANNEL DOMAINS
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批准号:7957418
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资助金额:$0.01万
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依托单位:
Structural studies of CaV alpha2delta subunits and interaction with anti-nocicept
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Structural studies of ion channel assembly and signalin*
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依托单位:
Structural studies of ion channel assembly and signaling
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资助金额:$35.91万
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财政年份:2005
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负责人:DANIEL L MINOR
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依托单位:
Structure and function of voltage-gated calcium channels
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批准号:7392405
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资助金额:$35.91万
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财政年份:2005
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负责人:DANIEL L MINOR
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依托单位:
Structural studies of ion channel assembly and signaling
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批准号:7455189
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Structural Studies of Ion Channel Assembly and Signaling Complexes
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负责人:DANIEL L MINOR
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资助金额:$32.5万
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依托单位:
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负责人:DANIEL L MINOR
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依托单位:
海外基金