Complex sentence: BII was originally founded in 2001 by Dr Rajagopal as a support unit for bioinformatics and IT services but has been redefined into a biological research organisation in August 2007 since the addition of the current executive director, Dr Frank Eisenhaber.
Split into simpler sentences: BII was originally founded in 2001 by Dr Rajagopal as a support unit for bioinformatics and IT services. However, since August 2007, it has been redefined into a biological research organisation since the addition of the current executive director, Dr Frank Eisenhaber.