Fusicoccin affects role of  

a) Auxin

b) GA

c) ABA

d) IPT

TLS Online TPP Program

#Id: 6406

#Unit 2. Cellular Organization

Attenuator riboswitch (Leader sequence) region 1 is translated  till UGA (R1-2) at high trp concentration due to two conditions

 Ribosome quickly crosses codon 10, 11

After crossing codon 10, 11 ribosome prematurely terminated at UGA at the end of Region 1

TLS Online TPP Program

#Id: 6407

#Unit 2. Cellular Organization

During Attenuation, Region 3-4 forms hairpin then second hairpin is formed between Region 1-2

TLS Online TPP Program

#Id: 6408

#Unit 2. Cellular Organization

Dual hairpin formation take place due to ribosome fall from UGA

TLS Online TPP Program

#Id: 6409

#Unit 2. Cellular Organization

Dual hairpin formation (Region 3-4 forms hairpin then second hairpin is formed between Region 1-2) release RNA-DNA hybrid and RNA Polymerase causes seizing transcription of trp operon at high trp concentration.

TLS Online TPP Program

#Id: 6410

#Unit 2. Cellular Organization

TLS Online TPP Program

#Id: 6411

#Unit 2. Cellular Organization

Attenuator riboswitch (Leader sequence) region 1 is translated atleast till codon 10 and 11 in case of Low trp concentration because ribosomes get stalled due to low availability of charged tRNA-trp