Concept 15 DNA and proteins are key molecules of the cell nucleus.
Thomas Sakmar
Thomas Sakmar is a professor at Rockefeller University. His lab works on the role of several proteins involved in photochemistry, specifically how protein structure is related to function. Dr. Sakmar has a personal interest in the work done by Phoebus Levene.
- Comments on some of the prevailing theories of the time and Phoebus Levene's basic hypothesis
- Phoebus Levene's contributions -- the distinction between DNA and RNA.
- The work of Erwin Chargaff and how it contributed to the downfall of Levene's tetranucleotide theory.
- Did Levene's tetranucleotide theory affect the development of ideas in the field of nucleic acid research?
DNA and proteins are key molecules of the cell nucleus.
One gene makes one protein.
A gene is made of DNA.
Bacteria and viruses have DNA too.
The DNA molecule is shaped like a twisted ladder.
A half DNA ladder is a template for copying the whole.
RNA is an intermediary between DNA and protein.
DNA words are three letters long.
A gene is a discrete sequence of DNA nucleotides.
The RNA message is sometimes edited.
Some viruses store genetic information in RNA.
RNA was the first genetic molecule.
Mutations are changes in genetic information.
Some types of mutations are automatically repaired.