Drs2p Function in Clathrin-coated Vesicle Budding
Drs2p 在网格蛋白包被的囊泡出芽中的功能
基本信息
- 批准号:6525985
- 负责人:
- 金额:$ 24.16万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:2001
- 资助国家:美国
- 起止时间:2001-09-15 至 2005-08-31
- 项目状态:已结题
- 来源:
- 关键词:ADP ribosylation G protein Saccharomyces cerevisiae cell component structure /function cell free system clathrin electron microscopy fungal genetics fungal proteins hydrogen potassium exchanging ATPase intracellular transport membrane lipids membrane reconstitution /synthesis membrane transport proteins molecular site phospholipids posttranslational modifications protein localization protein structure function site directed mutagenesis technology /technique development vesicle /vacuole
项目摘要
DESCRIPTION (APPLICANT'S ABSTRACT): A striking feature of eukaryotic cells,
from yeast to human, is their compartmental organization into membrane-bound
organelles, each with a unique composition and function. The long-term goal of
this research project is to understand how the Goigi complex, a
multi-compartment organelle, performs its essential role in the transport,
modification and sorting of proteins in the secretory pathway. Towards this
goal, the function of ADP-ribosylation factor (ARF) in vesicle-mediated
transport from the Golgi complex is being examined. ARF appears to regulate the
budding of both COPI- and clathrin-coated vesicles from the Golgi complex. The
proposed studies stem from recent discoveries implicating a role for Drs2p, an
integral membrane P-type ATPase and potential lipid translocase (or flippase),
specifically in the ARF-dependent budding of clathrin coated vesicles. The
yeast Saccharomyces cerevisiae will be used for this work because of the
fundamental similarity of the secretory pathway in all eukaryotic cells coupled
with the powerful genetic and molecular approaches available with this organism
make it an ideal model system. The specific goals of this research project are
to determine if Drs2p is required for recruiting ARF and clathrin to Golgi
membranes, thus indicating a direct role for Drs2p in clathrin coated vesicle
budding. The proposed lipid flippase activity of Drs2p will be tested as will
the potential overlap in function between Drs2p and four Drs2p-related proteins
encoded within the yeast genome. There are profound implications to human
health that can be derived from this study. Both Drs2p and clathrin are
required for the normal function of the Golgi complex in the transport and
processing of many proteins. In addition, lipid flippases related to Drs2p are
thought to restrict phosphatidylserine (PS) to the inner leaflet of 'the plasma
membrane. Loss of this asymmetric distribution of PS in blood cells stimulates
clot formation and in apoptotic cells allows for recognition and phagocytosis
by macrophages.
描述(申请人摘要):真核细胞的一个显著特征,
从酵母菌到人类,是它们的隔室组织,
细胞器,每一个都有独特的组成和功能。的长期目标
这个研究项目是为了了解Goigi情结,一个
多室细胞器,在运输中发挥重要作用,
分泌途径中蛋白质的修饰和分选。为实现这一
目的:探讨ADP核糖基化因子(ARF)在囊泡介导的
从高尔基复合体的运输正在研究中。ARF似乎调节了
COPI和网格蛋白包被的囊泡从高尔基复合体中出芽。的
提出的研究源于最近的发现,涉及Drs2p的作用,
整合膜P型ATP酶和潜在脂质转位酶(或翻转酶),
特别是在网格蛋白包被的囊泡的ARF依赖性出芽中。的
酵母酿酒酵母将用于这项工作,因为
所有真核细胞分泌途径的基本相似性
利用强大的基因和分子手段
使其成为理想的模型系统。本研究项目的具体目标是
以确定是否需要Drs2p将ARF和网格蛋白募集到高尔基体
因此,表明Drs2p在网格蛋白包被的囊泡中的直接作用
发芽将测试Drs2p的拟议脂质翻转酶活性,如将在下文中所述。
Drs2p和四种Drs2p相关蛋白之间潜在功能重叠
在酵母基因组中编码。这对人类有着深远的影响,
可以从这项研究中获得的健康。Drs2p和网格蛋白都是
在运输中高尔基复合体的正常功能所需的,
加工许多蛋白质。此外,与Drs2p相关的脂质翻转酶是
被认为限制磷脂酰丝氨酸(PS)的内部小叶的“血浆
膜的PS在血细胞中的这种不对称分布的丧失刺激了
凝块形成和凋亡细胞允许识别和吞噬
巨噬细胞
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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TODD R GRAHAM其他文献
TODD R GRAHAM的其他文献
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{{ truncateString('TODD R GRAHAM', 18)}}的其他基金
Mechanisms of membrane homeostasis through protein and lipid transport
通过蛋白质和脂质运输实现膜稳态的机制
- 批准号:
10544025 - 财政年份:2022
- 资助金额:
$ 24.16万 - 项目类别:
Mechanisms of membrane homeostasis through protein and lipid transport
通过蛋白质和脂质运输实现膜稳态的机制
- 批准号:
10330654 - 财政年份:2022
- 资助金额:
$ 24.16万 - 项目类别:
P4-ATPase mechanism of phospholipid translocation
P4-ATP酶磷脂易位机制
- 批准号:
8724534 - 财政年份:2013
- 资助金额:
$ 24.16万 - 项目类别:
P4-ATPase mechanism of phospholipid translocation
P4-ATP酶磷脂易位机制
- 批准号:
8575204 - 财政年份:2013
- 资助金额:
$ 24.16万 - 项目类别:
Drs2p Function in Clathrin-coated Vesicle Budding
Drs2p 在网格蛋白包被的囊泡出芽中的功能
- 批准号:
8463209 - 财政年份:2001
- 资助金额:
$ 24.16万 - 项目类别:
Drs2p Function in Clathrin-coated Vesicle Budding
Drs2p 在网格蛋白包被的囊泡出芽中的功能
- 批准号:
6655530 - 财政年份:2001
- 资助金额:
$ 24.16万 - 项目类别:
Drs2p Function in Clathrin-coated Vesicle Budding
Drs2p 在网格蛋白包被的囊泡出芽中的功能
- 批准号:
7781106 - 财政年份:2001
- 资助金额:
$ 24.16万 - 项目类别:
Drs2p Function in Clathrin-coated Vesicle Budding
Drs2p 在网格蛋白包被的囊泡出芽中的功能
- 批准号:
6382810 - 财政年份:2001
- 资助金额:
$ 24.16万 - 项目类别:
Drs2p Function in Clathrin-coated Vesicle Budding
Drs2p 在网格蛋白包被的囊泡出芽中的功能
- 批准号:
8272561 - 财政年份:2001
- 资助金额:
$ 24.16万 - 项目类别:
Drs2p Function in Clathrin-coated Vesicle Budding
Drs2p 在网格蛋白包被的囊泡出芽中的功能
- 批准号:
8076284 - 财政年份:2001
- 资助金额:
$ 24.16万 - 项目类别:
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