{"method": "X-RAY DIFFRACTION", "mutation_s_field": "V57N", "ec_number": "", "description": "They mutated cystatin C with the smallest possible structural intervention, that is a single-point mutation replacing hydrophobic V57 from the L1 loop by polar asparagine, known as a stabilizer of a Beta-turn motif. V57N hCC mutant occurred to be stable in its monomeric form and crystallized as a monomer, revealing typical cystatin fold with a five-stranded antiparallel Beta-sheet wrapped around an Alpha-helix.", "ligstr": "SO4:A:O4 S -2:96.06:SULFATE ION:[O-]S(=O)(=O)[O-]:InChI=1S/H2O4S/c1-5(2,3)4/h(H2,1,2,3,4)/p-2:QAOWNCQODCNURD-UHFFFAOYSA-L;SO4:B:O4 S -2:96.06:SULFATE ION:[O-]S(=O)(=O)[O-]:InChI=1S/H2O4S/c1-5(2,3)4/h(H2,1,2,3,4)/p-2:QAOWNCQODCNURD-UHFFFAOYSA-L", "pmid": "21074623", "remarks": "Hinge-loop mutation can be used to control 3D domain swapping and amyloidogenesis of human cystatin C", "amyloid_non_amyloid": "Non-amyloid", "type": "Protein", "inchi": "InChI=1S/H2O4S/c1-5(2,3)4/h(H2,1,2,3,4)/p-2%%InChI=1S/H2O4S/c1-5(2,3)4/h(H2,1,2,3,4)/p-2", "resolution": "2.04", "species": "Homo sapiens", "secondary_structure": "SSPGKPPRLVGGPMDASVEEEGVRRALDFAVGEYNKASNDMYHSRALQVVRARKQINAGVNYFLDVELGRTTCTKTQPNLDNCPFHDQPHLKRKAFCSFQIYAVPWQGTMTLSKSTCQDA#CCCCCCCCCCCCCEECCTTSHHHHHHHHHHHHHHHHHCCCSEEEEEEEEEEEEEEESSSEEEEEEEEEEEEEEETTCSCCSCCCBCSSHHHHCCEEEEEEEEEEGGGTEEEEEEEEEEEC&SSPGKPPRLVGGPMDASVEEEGVRRALDFAVGEYNKASNDMYHSRALQVVRARKQINAGVNYFLDVELGRTTCTKTQPNLDNCPFHDQPHLKRKAFCSFQIYAVPWQGTMTLSKSTCQDA#CCCCCCCCCCCCCEEECTTSHHHHHHHHHHHHHHHHHCCCSEEEEEEEEEEEEEEESSSEEEEEEEEEEEEEEETTSCCSTTSCBCSSHHHHCCEEEEEEEEEEGGGTEEEEEEEEEEEC", "chain_id": "A%%B", "gene_names": "CST3", "r_value_free": "0.225", "pdb_id": "3NX0", "reference": "J Struct Biol. 2011 Feb;173(2):406-13.", "keyword": "Cystatin-C", "protein_name": "Cystatin-C", "ligand_formula": "O4 S -2%%O4 S -2", "peptide_protein_sequence": "chain-ID A: SSPGKPPRLVGGPMDASVEEEGVRRALDFAVGEYNKASNDMYHSRALQVVRARKQINAGVNYFLDVELGRTTCTKTQPNLDNCPFHDQPHLKRKAFCSFQIYAVPWQGTMTLSKSTCQDA; chain-ID B: SSPGKPPRLVGGPMDASVEEEGVRRALDFAVGEYNKASNDMYHSRALQVVRARKQINAGVNYFLDVELGRTTCTKTQPNLDNCPFHDQPHLKRKAFCSFQIYAVPWQGTMTLSKSTCQDA", "entry": "S-0280", "length": "120", "uniprot_ac": "P01034", "author": "Orlikowska, M., Jankowska, E., Kolodziejczyk, R., Jaskolski, M., Szymanska, A.", "ligand_smiles": "[O-]S(=O)(=O)[O-]%%[O-]S(=O)(=O)[O-]", "ligand_mw": "96.06%%96.06", "alternative_name": "Cystatin-3, Gamma-trace, Neuroendocrine basic polypeptide, Post-gamma-globulin", "ligand_name": "SULFATE ION%%SULFATE ION", "pdb_classification": "HYDROLASE INHIBITOR", "global_stoichiometry": "", "inchi_key": "QAOWNCQODCNURD-UHFFFAOYSA-L%%QAOWNCQODCNURD-UHFFFAOYSA-L", "ligand_id": "SO4%%SO4"}