Stockholm University

The Oliveberg Group

Protein Folding and Disease

Department of Biochemistry and Biophysics, The Arrhenius Laboratories for Natural Sciences, Stockholm University

Model Proteins Studied by the Group

Ribosomal Protein S6

Ribosomal Protein S6

The ribosomal protein S6 is a small, 101 amino acid, protein from Thermus thermophilus, consisting of two α-helices packed on top of a four stranded β-sheet. The secondary structure elements are arranged in a primary topology that gives a feature of a split β-α-β protein, which makes it a part of a family of proteins with the same fold


Ribosomal Protein L23
Ribosomal Protein L23

L23 from Thermus thermophilus is a small ribosomal protein (96 aminoacids) here used as a model protein when searching for site specific information about the transition state ensemble and the folding reaction. L23 consists of three α-helixes packed against a four stranded β-sheet in a saddle like manner creating a hydrophobic core. Strand 3 and 4 is connected by a long unstructured loop which together with one side of the protein surface consists of a large amount of positively charged residues, probably of importance being a ribosomal protein interacting with RNA.


Cu/Zn Superoxide Dismutase
Cu/Zn Superoxide Dismutase

The SOD1 gene in human encodes a cytosolic copper-zink (Cu/Zn) superoxide dismutase (SOD) responsible for the defence against harmful superoxide radicals. SOD is composed of two identical subunits, forming a stable homodimer. Over 100 mutations in SOD have been identified in patients having the neurodegenerative disease amyotrophic lateral sclerosis (ALS).