Structure Factor and Electron Density Formulæ
نویسندگان
چکیده
منابع مشابه
Fingerprint-based structure retrieval using electron density.
We present a computational approach that can quickly search a large protein structural database to identify structures that fit a given electron density, such as determined by cryo-electron microscopy. We use geometric invariants (fingerprints) constructed using 3D Zernike moments to describe the electron density, and reduce the problem of fitting of the structure to the electron density to sim...
متن کاملRealizing arithmetical formulæ
Correct (for the execution) program might be untypable : let stupid n =. if n=n+1 then 27 else trué Etienne Miquey Realizing arithmetical formulae Classical realizability Realizability game Zoology Gender equality Introduction Curry-Howard Correct (for the execution) program might be untypable : let stupid n =. if n=n+1 then 27 else trué Etienne Miquey Realizing arithmetical formulae Classical ...
متن کاملOn the functional significance of electron density protein structure alignments.
Electron density protein alignments are analyzed in terms of their underlying similarity measure, the density overlap. These alignments are conceptually unrelated to biochemical structural elements and, therefore, are appropriate in structure-only similarity studies. The analysis is focused on the low sequence similarity subset of protein domains. A remarkable association is found between simpl...
متن کاملFrom Electron Density and Sequence to Structure: Integrating Protein Image Analysis and Threading for Structure Determination
This paper presents a computational methodology for integrating techniques from protein image interpretation and protein sequence threading, applied to the problem of structure determination from experimental X-ray crystallographic electron density maps. In the proposed architecture, image interpretation of an electron density map produces candidate structural segments; threading is applied to ...
متن کاملThree-dimensional structure of low density lipoproteins by electron cryomicroscopy.
Human low density lipoproteins (LDL) are the major cholesterol carriers in the blood. Elevated concentration of LDL is a major risk factor for atherosclerotic disease. Purified LDL particles appear heterogeneous in images obtained with a 400-kV electron cryomicroscope. Using multivariate statistical and cluster analyses, an ensemble of randomly oriented particle images has been subdivided into ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature
سال: 1936
ISSN: 0028-0836,1476-4687
DOI: 10.1038/138627a0