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BIOINFORMATIK I UEBUNGEN Regulation of transcription.

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Presentation on theme: "BIOINFORMATIK I UEBUNGEN Regulation of transcription."— Presentation transcript:

1 BIOINFORMATIK I UEBUNGEN http://icbi.at/bioinf

2 Regulation of transcription

3 TF classification by DNA-binding A. Zinc fingersB. Helix-turn-helix C. Leucine zipperD. Helix-loop-helix

4 hetero dimerization homo dimerization Transcription factor dimerization Leucine zippers

5 Protein 3D-structure Example: PPARg::RXRa+Rosi, 9-cis RA, NCOA2 (3dzy) PDB JMol Cn3D POLYVIEW-3D Proteopedia PDB identification code

6 Recombinant DNA technology Protein synthesis In vitro expression Libraries Gene transfer in animals and plants

7 Recombinant DNA technology Polymerases Nucleases

8 restriction enzymes Recombinant DNA technology

9 Ligases

10 Cloning

11 Cloning vector (pBR322) Plasmid Ampicillin resistance Tetracycline resistance Polylinker Origin of replication (ori)

12 Selection by antibiotics

13 Selection by X-gal

14 Exercise 3 1. CLONING EXPERIMENT Starting from a cloning sequence and find out which cloning vector (name, accnr, length) was used (e.g. using the tool VecScreen) Where is the insert in the given sequence located (position from-to, length) Identify the insert (name, accnr, organism, length, amino acid sequence, function) Determine the restriction enzyme (6bp cutter) used for incorporating the insert (name, sequence) Are there homolog proteins in humans (name, accnr, description, conserved domains) 2. PROTEIN 3D-STRUCTURE Show 3D protein structure of a homolog human protein (including DNA binding) (from 1) and give PDB identification code for this structure


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