External Stored Procedure Transformation (Informatica) in SSIS
SSIS treates Stored Procedures no different than any other query. It even lets you parametrize simple SQL queries.
You can use the "Execute SQL Task" to execute it as a part of the workflow.
Or the "OLE DB Command" transformation to execute it as a part of the data flow.
And yes, you can execute SP's and queries on any kind of RDBMS from SSIS as long as you have ODBC connectivity to it.