Databases NCBI GenBank Protein Data Bank - RCSB PubMed Saccharomyces database SWISS-PROT: Expasy TIGR homepage World database of crystallographers Companies Ambion, Inc. - The RNA Company American Type Culture Collection (ATCC) Amersham-Pharmacia Biotech Bio101 Bio-Synthesis Charles Supper Clontech DSMZ (T. maritima) EPICENTRE Hampton Research Invitrogen Molecular Structure Corporation NEB Novagen Operon Oxford Cryosystems Promega Qiagen Roche Sigma Stratagene Servers Crystal twinning server DALI Protein-interaction Restriction enzyme analysis SCOP TOPS Verify3D (3D-1D plot) Softwares CCP4 Suite CNS DOCK GRASP PyMOL SOLVE WWW O Synchrotron beamlines ALS - Advanced Light Source NSLS X-8C NSLS X-12C PF (BL6A, BL6B, BL18B)