How many disulfide bridges has the protein hepcidin got?
[' hepcidin, containing four disulfide bridges', "Cshepc has eight cysteines formed four conserved disulfide bridges, similarly to that of human's", 'The native peptide of 25 amino acids (Hepc25) contains four disulfide bridges that maintain a β-hairpin motif.', 'Hepcidin, a 25 amino acid peptide hormone containing a complex network of four disulfide bonds is the hormone regulator of iron homeostasis', 'Molecular mass measurements of the native peptide and the reduced and alkylated peptide confirmed the sequence with four intramolecular disulfide bridges. ', 'Hepcidin contains eight cysteine residues that form four disulfide bridges, which stabilize a hairpin-shaped structure with two beta sheets.']
['Hepcidin contains eight cysteine residues that form four disulfide bridges.']
['Hepcidin contains eight cysteine residues that form four disulfide bridges']