C7150 Regulace metabolických drah

Faculty of Science
Autumn 2006
Extent and Intensity
2/0/0. 2 credit(s) (fasci plus compl plus > 4). Recommended Type of Completion: zk (examination). Other types of completion: k (colloquium).
Teacher(s)
doc. RNDr. Stanislav Pavelka, CSc. (lecturer)
Guaranteed by
doc. RNDr. Stanislav Pavelka, CSc.
Department of Biochemistry – Chemistry Section – Faculty of Science
Contact Person: doc. RNDr. Stanislav Pavelka, CSc.
Timetable
Tue 8:00–9:50 C04/211
Prerequisites (in Czech)
Lze zapsat v 5.,7.,9. semestru po absolvování Biochemie II.
Course Enrolment Limitations
The course is also offered to the students of the fields other than those the course is directly associated with.
fields of study / plans the course is directly associated with
there are 43 fields of study the course is directly associated with, display
Course objectives
An advanced lecture for MSc and PhD students of biochemistry and molecular biology or chemistry and general biology. Overview of basic types of biochemical control mechanisms at the molecular level. Allosteric interactions, reversible covalent modifications of proteins, modulation of enzyme activities by regulatory proteins, proteolytic activation of zymogens. Control of metabolism at the level of whole organism. The coordination of catabolism and biosynthesis.
Syllabus
  • I. Biochemical regulations at the molecular level. 1. Overview of the basic types of biochemical regulation mechanisms. 2. Allosteric regulations - generally. (Models of allosteric interactions - concerted (symmetrical model) and sequential. Cooperative binding, homotropic and heterotropic interactions). 3. Hemoglobin (Hb) as a prototype of an allosteric protein. (Biological function of Hb, differences between Hb and myoglobin. Changes in quaternary structure of Hb on oxygenation. The Bohr effect - the influence of H+ and CO2 concentrations on the affinity of hemoglobin for oxygen. The effect of 2,3-bisphosphoglycerate on the binding of oxygen by Hb). 4. Allosteric control of enzyme activity of aspartate transcarbamoylase (ATCase). (The function of ATCase, biological significance of the allosteric regulation. Dissociation of catalytic and regulatory subunits of ATCase. Structural basis of allosteric interactions in ATCase). 5. Regulation of bacterial biosynthesis of aminoacids. (Types of feedback inhibition of branched metabolic pathways). 6. Reversible covalent modification of enzymes. (The role of phosphorylation and dephosphorylation reactions in control processes. Modulation of glutamine synthetase activity by reversible covalent modification). 7. Modulation of enzyme activity by regulatory proteins. (Control of covalent modification of glutamine synthetase by enzyme cascade). 8. Activation of zymogens by specific proteolytic cleavage. (Activation of trypsinogen and chymotrypsinogen. The cascade of proteolytic activation of zymogens in the process of blood clotting. The role for vitamin K in the biosynthesis of prothrombin. Complex regulation of blood clotting). II. Control of metabolism at the level of whole organism. 9. Overview of the metabolic pathways. (From the macromolecules of food to ATP). 10. Glycolysis. (Allosteric control of key enzymes in glycolysis). 11. Regulation of the metabolism of glycogen. (Overview of the reactions of glycogen biosynthesis and breakdown. Structural basis of the control of enzymes engaged in glycogen metabolism. Integration of control mechanisms - maintaining the blood glucose level constant). 12. Citric acid cycle. The respiratory chain and oxidative phosphorylation. 13. Regulation of ATP synthesis. (ATP synthase. Adenine nucleotide translocase. Na+,K+ -ATPase as an example of ionic pump).
Literature
  • GARRETT, R.H. and C.M. GRISHAM. Biochemistry, 2nd ed. Fort Worth, Orlando: Saunders College Publ., 1999, 1127 pp. info
  • STRYER, L. Biochemistry, 4th ed. New York: Freeman and Co., 1995, 1064 pp. info
  • VOET, D. and J.G. VOET. Biochemistry, 2nd ed. New York: J. Wiley & Sons, 1995, 1361 pp. info
  • Ca. 200 blan k dispozici u přednášejícího.
Language of instruction
Czech
Follow-Up Courses
Further Comments
The course can also be completed outside the examination period.
The course is taught annually.
The course is also listed under the following terms Autumn 2007 - for the purpose of the accreditation, Autumn 1999, Autumn 2010 - only for the accreditation, Autumn 2000, Autumn 2001, Autumn 2002, Autumn 2003, Autumn 2004, Autumn 2005, Autumn 2007, Autumn 2008, Autumn 2009, Autumn 2010, Autumn 2011, Autumn 2011 - acreditation, Autumn 2012, Autumn 2013, Autumn 2014, Autumn 2015, Autumn 2016, autumn 2017, Autumn 2018, Autumn 2019, Autumn 2020, autumn 2021, Autumn 2022, Autumn 2023, Autumn 2024.
  • Enrolment Statistics (Autumn 2006, recent)
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