Angular momentum and the algebra of current components

It has recently been proposed (1) that the space integrals of all components of the vector current octet Fiα and the axial vector current octet Fiα5 obey the same commutation rules as if the currents were equal to Giα and Giα5, respectively, where, in terms of a quark field q, we have Giα≡iqγαλiq/2, Giα5≡iqγαγ5λiq/2.(1)