Nucleic Acids Research, 2003, Vol. 31, No. 13 3356-3358
© 2003 Oxford University Press
SEM (Symmetry Equivalent Molecules): a web-based GUI to generate and visualize the macromolecules
Bioinformatics Centre, Supercomputer Education and Research Centre, Indian Institute of Science, Bangalore, 560 012, India
*To whom correspondence should be addressed. Tel: +91 803601409; Fax: +91 803600683; Email: sekar{at}physics.iisc.ernet.in
SEM, Symmetry Equivalent Molecules, is a web-based graphical user interface to generate and visualize the symmetry equivalent molecules (proteins and nucleic acids). In addition, the program allows the users to save the three-dimensional atomic coordinates of the symmetry equivalent molecules in the local machine. The widely recognized graphics program RasMol has been deployed to visualize the reference (input atomic coordinates) and the symmetry equivalent molecules. This program is written using CGI/Perl scripts and has been interfaced with all the three-dimensional structures (solved using X-ray crystallography) available in the Protein Data Bank. The program, SEM, can be accessed over the World Wide Web interface at http://dicsoft2.physics.iisc.ernet.in/sem/ or http://144.16.71.11/sem/.