Complex sentence: They are composed of six positively charged arginine residues and four cysteine residues They are cysteine-rich β-sheet AMPs that display limited sequence similarity to certain defensins and tachyplesins.
Split into simpler sentences: They are composed of six positively charged arginine residues and four cysteine residues. BMC Structural Biology 2007,7:21 doi: 10.1186/1472-6807-7-21 They are cysteine-rich β-sheet AMPs that display limited sequence similarity to certain defensins and tachyplesins.