Garzón José Ignacio, Kovacs Julio, Abagyan Ruben, Chacón Pablo
Centro de Investigaciones Biológicas, CSIC Ramiro de Maeztu 9, 28040 Madrid, Spain.
Bioinformatics. 2007 Feb 15;23(4):427-33. doi: 10.1093/bioinformatics/btl625. Epub 2006 Dec 6.
Efficient fitting tools are needed to take advantage of a fast growth of atomic models of protein domains from crystallography or comparative modeling, and low-resolution density maps of larger molecular assemblies. Here, we report a novel fitting algorithm for the exhaustive and fast overlay of partial high-resolution models into a low-resolution density map. The method incorporates a fast rotational search based on spherical harmonics (SH) combined with a simple translational scanning.
This novel combination makes it possible to accurately dock atomic structures into low-resolution electron-density maps in times ranging from seconds to a few minutes. The high-efficiency achieved with simulated and experimental test cases preserves the exhaustiveness needed in these heterogeneous-resolution merging tools. The results demonstrate its efficiency, robustness and high-throughput coverage.
http://sbg.cib.csic.es/Software/ADP_EM.
Supplementary data are available at Bioinformatics online.
需要高效的拟合工具来利用来自晶体学或比较建模的蛋白质结构域原子模型的快速增长,以及更大分子组装体的低分辨率密度图。在此,我们报告了一种新颖的拟合算法,用于将部分高分辨率模型详尽且快速地叠加到低分辨率密度图中。该方法结合了基于球谐函数(SH)的快速旋转搜索以及简单的平移扫描。
这种新颖的组合使得能够在几秒到几分钟的时间内将原子结构精确对接至低分辨率电子密度图中。通过模拟和实验测试案例所实现的高效率保留了这些异质分辨率合并工具所需的详尽性。结果证明了其效率、稳健性和高通量覆盖范围。
http://sbg.cib.csic.es/Software/ADP_EM。
补充数据可在《生物信息学》在线获取。