Mapping the morphological identifiers of distinct conformations via the protein translocation current in nanopores

doi:10.1039/d0nr07413f

	Mapping the morphological identifiers of distinct conformations via the protein translocation current in nanopores
	Zhang MK(张明坤)1,2,3,4,5; Chen SB(陈深宝)3,4,5; Hu JR(胡锦荣)3,4,5; Ding QH(丁奇寒)3,4,5; Li LD(李林达)3,4,5; Lv SQ(吕守芹)3,4,5; Long M(龙勉)3,4,5
刊名	NANOSCALE
	2021-03-28
卷号	13 期号:12 页码:14
ISSN号	2040-3364
DOI	10.1039/d0nr07413f
通讯作者	Lu, Shouqin(lsq@imech.ac.cn) ; Long, Mian(mlong@imech.ac.cn)
英文摘要	Conformational changes of proteins play a vital role in implementing their functions and revealing the underlying mechanisms in various biological processes. It is still challenging to monitor protein conformations with temporal fingerprints of current-resistance pulses in the nanopore technique. Here the low-resolution morphologies of different conformations of a typical integrin, alpha(x)beta(2), were estimated via relative blockade currents simulated from all-atom molecular dynamics (MD). Distinct conformational states of alpha(x)beta(2) were directly explained by the volume and shape identifiers. Protein modulation in ionic current was analyzed from the conductivity distribution inside the protein-blocked nanopore. Combining a discrete model with spheroidal approximation, a MD-based approach was developed to theoretically predict the volume and shape of the nanopore for sensing alpha(x)beta(2). This method was also applicable in specifying morphological identifiers of six other proteins, and the theoretical predictions are in good agreement with the experimental measurements. These results potentiated the validity of this method for the conformational identification of proteins in nanopores.
分类号	一类
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
WOS记录号	WOS:000635775000012
其他责任者	Lu, Shouqin ; Long, Mian
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/86443]
专题	力学研究所_国家微重力实验室
作者单位	1.Univ Chinese Acad Sci, Chongqing Sch, Chongqing 400714, Peoples R China 2.Chinese Acad Sci, Chongqing Engn Res Ctr High Resolut & Three Dimen, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China; 3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 4.Chinese Acad Sci, Inst Mech, CAS Ctr Excellence Complex Syst Mech, Beijing 100190, Peoples R China; 5.Chinese Acad Sci, Ctr Biomech & Bioengn, Key Lab Micrograv, Natl Micrograv Lab,Beijing Key Lab Engn Construct, Beijing 100190, Peoples R China;
推荐引用方式 GB/T 7714	Zhang MK,Chen SB,Hu JR,et al. Mapping the morphological identifiers of distinct conformations via the protein translocation current in nanopores[J]. NANOSCALE,2021,13(12):14.
APA	张明坤.,陈深宝.,胡锦荣.,丁奇寒.,李林达.,...&龙勉.(2021).Mapping the morphological identifiers of distinct conformations via the protein translocation current in nanopores.NANOSCALE,13(12),14.
MLA	张明坤,et al."Mapping the morphological identifiers of distinct conformations via the protein translocation current in nanopores".NANOSCALE 13.12(2021):14.