University:
Swansea University
Course:
PM-133 | Evolutionary and Molecular Genetics
Academic year:

2023
Views:

425

Pages:

2
Author:

Amal J.

expressionRepresible OpeionsTryptophon operon- Biosynthesis operan, repressible opererm- -Tryptophon- corepressorthey can bind+together onlyon the OsiterepressorLeaderveswitche transcription.Attenuator+ve-PromoterLAregion regulates attention mechanismsiseafferOperatorsubdivided into 4 regiontransportationcoupledtFIIIIIIIVcomplanantlystructure - EDCBAto easoltregulate coupled process oftranscription and from no translationIII during transcriptionIIIIUUUUUUUUStandard termination structure 4 terminalRNA pol cannot synthexigenotosynthesise tryptophaIsite14aa-I10ths11th codons -UGG ribosome stuck at th 10th positionwhen truptopher absentTryptoppor.II pairswith IIIRibosIVEPC BAwhen tryptophon presentIIIInot aterminationloop.sibosome aveil doesn't balt at 10th/11th and itoverlaps II region , If III cannot pair, III&IV pairand halt translationIndole 3- 2 GilyceislPsynbooperonSP20LAaEDCBABRAnthronilateTryptophonI II III IVsynthose-syn those (tetramenc)L2B23photo12AnthranilateIndole(trpprecursor)3-glyceool(IGP)3Trypto ph on