Run a FASTA or SSEARCH sequence similarity search using the EBI's WSFasta service (see http://www.ebi.ac.uk/Tools/webservices/services/fasta). Note: the WSFasta service used by this workflow is deprecated as of 21st September 2010 and should not be used in any new development. This service is will be retired during 2011. EBI's replacement FASTA services (REST or SOAP) should be used instead.