Many insect pest species also transmit viruses. The sapsucking species are effective virus vectors, delivering virus particles directly into the vascular tissue, thereby permitting their rapid dissemination throughout the plant

TLS Online TPP Program

#Id: 7798

#Unit 2. Cellular Organization

Exportin-t

functions to export tRNAs & binds fully processed tRNAs in a complex with Ran⋅GTP

TLS Online TPP Program

#Id: 7799

#Unit 2. Cellular Organization

Most mRNAs Are Exported from the Nucleus by a Ran-Independent Mechanism

TLS Online TPP Program

#Id: 7800

#Unit 2. Cellular Organization

The principal nuclear transport receptor of mRNPs out of the nucleus is :

A. mRNP exporter

B. Nuclear export factor 1 (NXF1)

C. Nuclear export transporter 1 (NXT1)

TLS Online TPP Program

#Id: 7801

#Unit 2. Cellular Organization

An RNA helicase (Dbp5) located on the cytoplasmic side of the NPC removes NXF1 and NXT1 from the mRNA in a reaction that is powered by ATP hydrolysis.

TLS Online TPP Program

#Id: 7802

#Unit 2. Cellular Organization

Free NXF1 and NXT1 proteins are recycled back into the nucleus by the Ran-dependent import process.

TLS Online TPP Program

#Id: 7803

#Unit 2. Cellular Organization