Crambin Protein

Model of crambin.

"Crambin is a small seed storage protein from the Abyssinian cabbage. It belongs to thionins. It has 46 residues (amino acids). It has been extensively studied by X-ray crystallography since its crystals are unique and diffract to a resolution of 0.48 Å."
--http://en.wikipedia.org/wiki/Crambin

The cysteine residues forming disulfide bonds are represented as spheres. Model based on the Protein Data Bank entry 1CRN:

http://www.rcsb.org/pdb/explore.do?structureId=1crn

Model created using VMD:
http://www.ks.uiuc.edu/Research/vmd/