Group 3: Transcription & RNA Processing

Transcription

 DNA code transcribed into RNA message

Gene expression

Instructions in DNA are converted into a functional product (protein or functional RNA)

RNA polymerase

Uses DNA as a template to make new RNA (catalyzes transcription0

Coding strand

DNA strand with the same sequence as mRNA

Template strand:

DNA strand that is complementary and antiparallel to mRNA

Transcription factors / Regulators

Regulatory proteins/ Regulators of transcription

Activators

Recruit RNA polymerase

Repressors

Do not let RNA polymerase bind to the promoter

Terminator

DNA sequence where transcription ends

Introns

Sections of mRNA that stay in the nucleus

Exons

Sections of mRNA that have expressed sequences and are used to make proteins

Alternative splicing

Allows different proteins to be made from the same mRNA