There are, as of Feb 1992, two e-mail based services for analyzing nucleic acid sequences and predicting gene structure. These services use a variety of analyses and combine them to provide their best "guess" at gene structure.
Geneid is an Artificial Intelligence system for analyzing vertebrate genomic DNA and prediction of exons and gene structure (1). A prototype is implemented as a fast, automatic email-response system.
Grail is an interface to a system which will ultimately provide automated gene assembly from DNA sequence data. Currently the system provides analysis of protein coding potential of a DNA sequence. The coding recognition module (CRM) uses a multiple- sensor neural network approach to identify coding exons than are at least 100 bases long.
Both of these services ask that you register once before using them.