Before revision:  Among three newly identified fast-growing RBD mutations, L452R  and N501T are able to effectively weaken the binding of many known antibodies with the RBD.
After revision:  Among three newly identified fast-growing RBD mutations, L452R , which is now known as part of the California variant B.1.427, and N501T are able to effectively weaken the binding of many known antibodies with the RBD.