BIOC 2580 Lecture Notes - Lecture 27: Enzyme Inhibitor, Molecular Biology, Escherichia Coli

• School: University of Guelph
• Department: Biochemistry
• Course: BIOC 2580
• Professor: Enoka Wijekoon

Document Summary

Day 27: metabolic pathways [march 17] introduction to metabolism. A ox / a red : redox couple half reaction. O 2 + 4e - + 4h + 2h 2 o n value n = 1 n = 2 n = 4. E 0 " = standard reduction potential at ph 7. 0 and 25 c. 2 cysteine + fumarate cystine + succinate fumarate + 2h + + 2e - succinate i) +0. 03 v (electron acceptor) cysteine + 2h + + 2e - 2 cysteine ii) -0. 34 v (electron donor) 2 cysteine cystine + 2h + + 2e - iii) +0. 34 v cysteine will reduce fumarate (or fumarate will oxidize cysteine) with a e 0 " of +0. 37 v. 2 cysteine + fumarate cystine + succinate (i + iii) = +0. 37 alternatively, e 0 " can be calculated by: E 0 " = e 0 " of the electron acceptor - e 0 " of electron donor energetics of electrochemical reactions.