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 Results for by Zhang, K. Y. J.
Preparation of input data
Cowtan, K. D., Zhang, K. Y. J. and Main, P., International Tables for Crystallography (2012). Vol. F, Section 15.3.3, pp. 407-408 [ doi:10.1107/97809553602060000849 ]
information. Acta Cryst. B 26, 136–143. Google Scholar Jones, T. A., Zou, J.-Y., Cowan, S. W. & Kjeldgaard, M. (1991). Improved methods for building protein models in electron density maps and the location of errors in these models ...

Density-modification modes
Cowtan, K. D., Zhang, K. Y. J. and Main, P., International Tables for Crystallography (2012). Vol. F, Section 15.3.4.1, pp. 408-409 [ doi:10.1107/97809553602060000849 ]
A 48, 301–312. Google Scholar Lamzin, V. S. & Wilson, K. S. (1997). Automated refinement for protein crystallography. Methods Enzymol. 277, 269–305. Google Scholar Tsao, J., Chapman, M. S. & Rossmann, M. G. (1992 ...
     [more results from section 15.3.4 in volume F]

Scaling
Cowtan, K. D., Zhang, K. Y. J. and Main, P., International Tables for Crystallography (2012). Vol. F, Section 15.3.5.1, pp. 410-411 [ doi:10.1107/97809553602060000849 ]
it is important that this value be entered correctly. However, the volume of the solvent mask may be varied independently of the true solvent content, as discussed in Section 15.3.3 . References Cowtan, K. D. & Main, P. (1998 ...
     [more results from section 15.3.5 in volume F]

DM/DMMULTI software for phase improvement by density modification
Cowtan, K. D., Zhang, K. Y. J. and Main, P., International Tables for Crystallography (2012). Vol. F, ch. 15.3, pp. 407-412 [ doi:10.1107/97809553602060000849 ]
modification. J. Appl. Cryst. 28, 347–351. Google Scholar Wang, B. C. (1985). Resolution of phase ambiguity in macromolecular crystallography . Methods Enzymol. 115, 90–112. Google Scholar Zhang, K. Y. J. & Main, P ...

Program operation
Cowtan, K. D., Zhang, K. Y. J. and Main, P., International Tables for Crystallography (2012). Vol. F, Section 15.3.2, pp. 407-407 [ doi:10.1107/97809553602060000849 ]
These must include the reflection data and solvent content, and may also include averaging operators, solvent mask and averaging domain masks. (2) Select the appropriate density modifications and the phase-combination mode to be used ...

Introduction
Zhang, K. Y. J., Cowtan, K. D. and Main, P., International Tables for Crystallography (2012). Vol. F, Section 15.1.2.1.1, pp. 386-387 [ doi:10.1107/97809553602060000847 ]
content of protein crystals . J. Mol. Biol. 33, 491–497. Google Scholar Reynolds, R. A., Remington, S. J., Weaver, L. H., Fisher, R. G., Anderson, W. F., Ammon, H. L. & Matthews, B. W. (1985). Structure of a serine ...
     [more results from section 15.1.2 in volume F]

Example
Zhang, K. Y. J., Cowtan, K. D. and Main, P., International Tables for Crystallography (2012). Vol. F, Section 15.1.7, pp. 398-399 [ doi:10.1107/97809553602060000847 ]
881–882. Google Scholar Zhang, K. Y. J., Cowtan, K. D. & Main, P. (1997). Combining constraints for electron density modification. In Macromolecular Crystallography, edited by C. W. Carter & R. M. Sweet, Vol. 277, pp. 53–64. New ...

Phase improvement by iterative density modification
Zhang, K. Y. J., Cowtan, K. D. and Main, P., International Tables for Crystallography (2012). Vol. F, ch. 15.1, pp. 385-400 [ doi:10.1107/97809553602060000847 ]
 Scholar Cowtan, K. D. & Main, P. (1998). Miscellaneous algorithms for density modification . Acta Cryst. D 54, 487–493. Google Scholar Cowtan, K. D. & Zhang, K. Y. J. (1999). Density modification for macromolecular ...

Electron powder diffraction
Zuo, J.-M., Lábár, J. L., Zhang, J., Gorelik, T. E. and Kolb, U., International Tables for Crystallography (2019). Vol. H, ch. 2.4, pp. 102-117 [ doi:10.1107/97809553602060000939 ]
least-squares minimization. The number of equations is reduced, while keeping the information content of all equations, by forming matrix A as where summation is performed for all pixels k for the model functions of the i th and j th ...

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