It marks a radical move away

It marks a radical move away ?

How "mark" can "move a radical away"?

（Hmm, I've got something: It presents a distinguishable move from other methods)

Context:

Known as solid state nanopore sequencing, the technique identifies DNA base pairs by measuring their electrical properties as they pass through a tiny hole – relying on the fact that DNA nucleotides each possess distinct electrical signatures. It marks a radical move away from the traditional biochemical and optical approaches to genome sequencing, and according to IBM and Roche Applied Science, who are teaming up to develop the technology, it could slash the cost of sequencing a genome from over $10,000 to as little as $100.