Two other viral proteins, the phospoprotein and the large protein (L-protein or polymerase) are associated with the RNP. The glycoprotein forms about400 trimeric spikes which are tightly arranged on the surface of the virus. The M protein is associated both with the envelope and the RNP. What does N 1424, P 991, M 805, G 1675, L 6475, 12 kb mean?