Type: Article
Title: Recent
Advances in the
Crank Automated Macromolecular Software Suite
Authors:
Navraj S. Pannu
*, Pavol Skubak, Irakli
Sikharulidze, Jan Pieter Abrahams, R.A.G de Graaff
Affiliations:
Department
of Biophysical Structural Chemistry, Gorlaeus Laboratories, Leiden
University, PO Box 9502, 2300 RA Leiden, The Netherlands;
*
Author to whom correspondence should be addressed. E-mail:
[email protected]
Abstract:
For its first release, the Crank system was shown to effectively detect
and phase anomalous scatterers from SAD data [1]. Since then, Crank's
speed and robustness has improved to build many structures
automatically for SAD, SIRAS, MAD and MAD + native data [2]. One
improvement involves using Luzzati parameters refined in the program
BP3 to validate
the quality and completeness of a substructure obtained. This has
proven to be very effective and reliable in identifying correct
solutions that do not meet the figure of merit levels reported in
substructure detection programs to safely assume a correct solution and
thus can allow for the early termination of the substructure detection
stage. To improve automated model building, an
interface to ARP/wARP and REFMAC has been added to also include SAD
data directly in model refinement. This multivariate SAD likelihood
function, implemented in a modified version of REFMAC has been shown to
extend the resolution and phase quality limits required in automated
model building with iterative refinement [3] and recently shown to be
very effective in combination with the SHELX[C/D/E] pipeline available
in CRANK. The above and other advances are available
in the latest version of Crank which is available
at http://www.bfsc.leidenuniv.nl/software/crank/ and from the CCP4
pre-release zone http://www.ccp4.ac.uk/prerelease_page.php.
[1] Ness
et al.
Structure 2004,
12, 1763-1761.
[2]
http://www.bfsc.leidenuniv.nl/software/crank/tests/pipeline1.html[3] Skubak
et al.
Acta Cryst D 2005, 61, 1626-1635.
Michael Baranowski 1
and Boguslaw Stec 2,*
1 Department of Chemistry, University of Texas
at El Paso, 500 W. University Ave. El Paso, TX 79968, USA
2 Burnham Institute for Medical Research, 10901 N. Torrey Pines Rd. La
Jolla, CA 92037, USA
* Author to whom correspondence should be addressed; E-mail:
[email protected]
Received: 13 July 2007;
in revised form: 15 October 2007 / Accepted: 16 October 2007 /
Published: 23 October 2007
Full Research Paper:
Crystallization
and Characterization of Galdieria sulphuraria RUBISCO in Two Crystal
Forms: Structural Phase Transition Observed in P21 Crystal Form
Int. J. Mol. Sci.
2007,
8, 1039-1051 (PDF
format, 2340K)
Marcelo L. dos Santos 1, Fábio H. R. Fagundes 2, Bruno R. F. Teixeira 1, Marcos H. Toyama 3 and Ricardo Aparicio 1,*1
Laboratório de Biologia Estrutural e Cristalografia, Instituto de
Química, Universidade Estadual de Campinas, CP 6154, 13083-970,
Campinas-SP, Brazil
2 Instituto de Biologia, Universidade Estadual de Campinas, Campinas-SP, Brazil
3 Laboratório de Química de Macromoléculas, UNESP/CLP, São Vicente-SP, Brazil
* Author to whom correspondance should be addressed; E-mail:
[email protected]Received: 4 February 2008; in revised form: 6 March 2008 / Accepted: 22 March 2008 / Published: 8 May 2008
Article: Purification and Preliminary Crystallographic Analysis of a New Lys49-PLA2 from B. JararacussuInt. J. Mol. Sci. 2008,
9, 736-750
(PDF format, 750K)
Wanpeng Sun 1, C. Ronald Geyer 2 and Jian Yang 1,*1
College of Pharmacy and Nutrition, University of Saskatchewan, 110
Science Place, Saskatoon, Saskatchewan, S7N 5C9, Canada; E-maila:
[email protected];
[email protected]2 Department of
Biochemistry, College of Medicine, University of Saskatchewan, 107
Wiggins Road, Saskatoon, Saskatchewan, S7N 5E5, Canada; E-mail:
[email protected]* Author to whom correspondence should be addressed; E-mail:
[email protected]Received: 2 April 2008; in revised form: 28 May 2008 / Accepted: 2 June 2008 / Published: 2 June 2008Article: Cloning, Expression, Purification and Crystallization of the PR Domain
of Human Retinoblastoma Protein-Binding Zinc Finger Protein 1 (RIZ1)Int. J. Mol. Sci. 2008,
9, 943-950 (PDF format, 368K); DOI:
10.3390/ijms9060950Christine Oswald 1, Sander H. J. Smits 1, Erhard Bremer 2 and Lutz Schmitt 1,*1 Institute of Biochemistry, Heinrich Heine University Duesseldorf, Universitaetsstrasse 1, 40225 Duesseldorf, Germany
2 Laboratory for Microbiology, Department of Biology, Philipps University Marbrug, Karl-von-Frisch Str., 35032 Marburg, Germany
*
Author to whom correspondence should be addressed: Tel.
+49-211-81-10773; Fax: +49-211-81-15310; E-mail:
[email protected].
Received: 3 May 2008; in revised form: 5 June 2008 / Accepted: 10 June 2008 / Published: 8 July 2008
Article: Microseeding – A Powerful Tool for Crystallizing Proteins Complexed with Hydrolyzable SubstratesInt. J. Mol. Sci. 2008,
9, 1131-1141 (PDF format, 1313K); DOI:
10.3390/ijms9071131