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TLS Online TPP Program

#Id: 2970

The M C M 2 - 7 proteins form a six-member ring-shaped complex around DNA. MCM 2, 3, 5 are regulatory, while MCM4,6,7 have helicase activity.


#Unit 3. Fundamental Processes #Fidelity of replication #Part B Pointers
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TLS Online TPP Program

#Id: 7797

#Unit 2. Cellular Organization

Exportin 1

a specific nuclear transport receptor for export mechanism
TLS Online TPP Program

#Id: 7798

#Unit 2. Cellular Organization

Exportin-t
functions to export tRNAs & binds fully processed tRNAs in a complex with Ranâ‹…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.