Refinement of Crystal Structures by Computational Methods

نویسندگان

چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Refinement of Underdetermined Crystal Structures

The normal matrix for full matrix least squares contains a wealth of information about the behavior of the problem. In particular, the eigenvalues and eigenvectors contain all of the information concerning precision of parameter determination and correlation of parameters. This information is valid even if the refinement is underdetermined. Full-matrix analysis is likely to prove valuable for l...

متن کامل

Modelling dynamics in protein crystal structures by ensemble refinement

Single-structure models derived from X-ray data do not adequately account for the inherent, functionally important dynamics of protein molecules. We generated ensembles of structures by time-averaged refinement, where local molecular vibrations were sampled by molecular-dynamics (MD) simulation whilst global disorder was partitioned into an underlying overall translation-libration-screw (TLS) m...

متن کامل

Refinement of the Crystal Structures of CuTe2Br and CuTe2I

The crystal structures of CuTe;Br and CuTe2I have been refined on the basis of single crystal data. Both compounds crystallize monoclinically in space group P2,/c. The structures are isotypic with that of CuTe2Cl. The lattice param eters of CuTe2Br are a — 834.5(8) pm. b = 492.8(4) pm, c = 1573.3(5) pm and ß = 135.3(2)°. The unit cell dimensions of C uT eJ are a = 866.5(8) pm, b — 491.4(4) pm, ...

متن کامل

Highly constrained multiple-copy refinement of protein crystal structures.

In the course of refining atomic protein structures, one often encounters difficulty with molecules that are unusually flexible or otherwise disordered. We approach the problem by combining two relatively recent developments: simultaneous refinement of multiple protein conformations and highly constrained refinement. A constrained Langevin dynamics refinement is tested on two proteins: neurotro...

متن کامل

Ensemble refinement of protein crystal structures: validation and application.

X-ray crystallography typically uses a single set of coordinates and B factors to describe macromolecular conformations. Refinement of multiple copies of the entire structure has been previously used in specific cases as an alternative means of representing structural flexibility. Here, we systematically validate this method by using simulated diffraction data, and we find that ensemble refinem...

متن کامل

ذخیره 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: Nihon Kessho Gakkaishi

سال: 2019

ISSN: 0369-4585,1884-5576

DOI: 10.5940/jcrsj.61.224