There are 27 of these repeats in the yeast Pol II CTD, 32 in the worm Caenorhabditis elegans, 45 in the fly Drosophila, and 52 in humans.  YSPTSPS repeats in CTD corresponds to the complexity of the genome.

TLS Online TPP Program

#Id: 2318

#Unit 3. Fundamental Processes

Major U2-type or GU-AG introns

TLS Online TPP Program

#Id: 2319

#Unit 3. Fundamental Processes

Splicing signals for minor introns

TLS Online TPP Program

#Id: 2320

#Unit 3. Fundamental Processes

Minor U12-type with GU-AG introns (hybrid type)

TLS Online TPP Program

#Id: 2321

#Unit 3. Fundamental Processes

Splice sites are directional in nature. 5’ splice site -the left, or donor, site and the 3’ splice site - right, or acceptor, site.

TLS Online TPP Program

#Id: 2322

#Unit 3. Fundamental Processes

Splicing complexes

TLS Online TPP Program

#Id: 2323

#Unit 3. Fundamental Processes

Lariat formation is characterize by 2’-5’ phosphodiester bond