OAKLAND, Calif.--Two bioinformatics software providers--Pangea Systems here and Molecular Simulations of San Diego, Calif.--have agreed to integrate certain elements of their respective product lines to enhance both bioinformatics packages. The companies will use Pangea's application programming interface to link the company's data management system with Molecular Simulations' WebLab Gene Explorer application. Gene Explorer is a graphical environment for analyzing and viewing DNA and protein sequences and structures.