The cowpea mosaic virus RNA 1-encoded 112 kDa protein may function as a VPg precursor in vivo Peters, Sander A. and Mesnard, Jean-Michel and Kooter, Ingeborg M. and Verver, Jan and Wellink, Joan and van Kammen, Ab,, 76, 1807-1813 (1995), doi = https://doi.org/10.1099/0022-1317-76-7-1807, publicationName = Microbiology Society, issn = 0022-1317, abstract= Processing of the 112 kDa (‘112K’) protein encoded by cowpea mosaic virus RNA 1 was examined in cowpea mesophyll protoplasts using a transient expression system. Cleavage of the 112K protein occurred via two alternative pathways either into VPg and 110K (24K + 87K) or into 26K (VPg + 24K) and 87K proteins. The 26K protein can be further cleaved into VPg and 24K proteins. The results support a model in which the 112K protein functions as the precursor of VPg during initiation of replication., language=, type=