The electronic transitions of the peptide bond occur in the far UV. The intense peak at 190 nm, and the weaker one at 210–220 nm is due to the p ® p* and n ® p* transitions.

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#Unit 3. Fundamental Processes

Each snRNP contains a single snRNA (100-300 nt) and several (20) proteins. The U4 and U6 snRNPs are usually found together as a di-snRNP (U4/U6) particle.

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#Unit 3. Fundamental Processes

U1 snRNA consist of four hairpins, one intron pairing strands and one sm binding domains.

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#Id: 6683

#Unit 3. Fundamental Processes

More than 90% of the genes expressed in mammals are alternatively spliced

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#Unit 3. Fundamental Processes

Five ways to splice an RNA

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#Unit 3. Fundamental Processes

Steric Hindrance and Combinations of Major and Minor Splice Sites are major reasons behind alternative splicing (Mutually Exclusive Splicing) 

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#Id: 6686

#Unit 3. Fundamental Processes

Alternative splicing is often associated with weak splice sites.