Cohomology of Cryo-Electron Microscopy
Cohomology of Cryo-Electron Microscopy
复制标题
冷冻电子显微镜的上同调
DOI:
--
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发表时间:
2016
影响因子:
1.2
通讯作者:
Lek
中科院分区:
文献类型:
--
作者:
Ke Ye;Lek
The goal of cryo-electron microscopy (EM) is to reconstruct the 3-dimensional structure of a molecule from a collection of its 2-dimensional projected images. In this article, we show that the basic premise of cryo-EM --- patching together 2-dimensional projections to reconstruct a 3-dimensional object --- is naturally one of Cech cohomology with SO(2)-coefficients. We deduce that every cryo-EM reconstruction problem corresponds to an oriented circle bundle on a simplicial complex, allowing us to classify cryo-EM problems via principal bundles. In practice, the 2-dimensional images are noisy and a main task in cryo-EM is to denoise them. We will see how the aforementioned insights can be used towards this end.
影响因子:
2.5
作者:
Singer, A.
通讯作者:
Singer, A.
影响因子:
2.2
作者:
RADERMACHER, M
通讯作者:
RADERMACHER, M
影响因子:
2.2
作者:
PENCZEK, P;RADERMACHER, M;FRANK, J
通讯作者:
FRANK, J