BIOLOGY 1A03 Lecture Notes - Lecture 3: Nuclear Pore, Endoplasmic Reticulum, Alpha Helix

• School: McMaster University
• Department: Biology
• Course: BIOLOGY 1A03
• Professor: Alastair Tracey Rosa Da Silva

Document Summary

Tata boxes are able to bind to a dna molecule because of a groove that allows for interaction. Porin proteins have a structural hydrophilic pore that allows for transport of water. Soluble proteins are more globular with a hydrophilic exterior and a hydrophobic interior. Genetic information is encoded in our dna. 1st step is to transcribe information into rna (template for synthesis of a polypeptide) 2nd step is the rna is processed to mrna and transported to cytoplasm where translated into the protein by ribosomes. The code for synthesis is in the nucleus. Region in the nucleus called the nucleolus is where the ribosomal rna molecules are transcribed. Before protein synthesis happens, the appropriate dna sequence is read and transcribed into. Double membrane of the nucleus has nuclear pores that allow material to flow in and out of the nucleus. Nuclear pores allow transcribed rna to exit the nucleus. Mrna (transcribed from dna) carries information to make proteins.