midterm
Terms
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- prokaryotes
- bacteria and bacteria like organisms
- eukaryotes
- plants and animals
- polypeptide
- polymer of alpha-amino acids formed by linking through peptide (amide) bonds
- enzyme
- a protein that catalyzes bond-forming or breaking reactions alone or with a "cofactor"
- cofactor
- a molecule required for catalysis (metal ion, heterocycle)
- holoenzyme
- protein + cofactor
- apoenzyme
- protein - cofactor
- prosthetic group
- tightly bound cofactor
- active site
- location in protein where biological function occurs
- ____ are usually located at active site
- metal ions
- alpha helix
- provides mobility and are important in converting processes that occur at the metal site into conformational changes.
- beta sheet
- region that confers rigidity and can provide strain to modify the properties of the metal ion.
- zn finger domain
- contains alpha and beta. can bind to DNA and affect transcription.
- passive ion transport uses
- ion channels
- active ion transport uses
- ion pumps