title: Resonance assignments of Ca²⁺-bound human S100A11.
abstract: The S100 family belongs to the EF-hand calcium-binding proteins regulating a wide range of important cellular processes via protein-protein interactions. Most S100 proteins adopt a conformation of non-covalent homodimer for their functions. Calcium binding to the EF-hand motifs of S100 proteins is essential for triggering the structural changes, promoting exposure of hydrophobic regions necessary for target protein interactions. S100A11 is a protein found in diverse tissues and possesses multiple functions upon binding to different target proteins. RAGE is a multiligand receptor binding to S100A11 and the interactions at molecular level have not been reported. However, the three-dimensional structure of human S100A11 containing 105 amino acids is still not available for further interaction studies. To determine the solution structure, for the first time we report the (1)H, (15)N and (13)C resonance assignments and protein secondary structure prediction of human S100A11 dimer in complex with calcium using a variety of triple resonance NMR experiments and the chemical shift index (CSI) method, respectively.
authors: Instrumentation Center, National Tsing Hua University, Hsinchu, Taiwan, ROC.
authors: Kuo-Wei
authors: KW
authors: Hung
authors: Yuan-Ming
authors: YM
authors: Chang
authors: Chin
authors: C
authors: Yu
mesh_terms: D002118:Calcium / Q000378:metabolism*; D002135:Calcium-Binding Proteins / Q000737:chemistry*; D006801:Humans; D019906:Nuclear Magnetic Resonance, Biomolecular; D009418:S100 Proteins / Q000737:chemistry*
chemical_list: D002135:Calcium-Binding Proteins; D009418:S100 Proteins; C072337:S100A11 protein, human; D002118:Calcium