ジャーナル: Proteins / 年: 2019 タイトル: Mutation in a flexible linker modulates binding affinity for modular complexes. 著者: Philippa H Stokes / Neil O Robertson / Ana P G Silva / Tanya Estephan / Jill Trewhella / J Mitchell Guss / Jacqueline M Matthews / 要旨: Tandem beta zippers are modular complexes formed between repeated linear motifs and tandemly arrayed domains of partner proteins in which β-strands form upon binding. Studies of such complexes, ...Tandem beta zippers are modular complexes formed between repeated linear motifs and tandemly arrayed domains of partner proteins in which β-strands form upon binding. Studies of such complexes, formed by LIM domain proteins and linear motifs in their intrinsically disordered partners, revealed spacer regions between the linear motifs that are relatively flexible but may affect the overall orientation of the binding modules. We demonstrate that mutation of a solvent exposed side chain in the spacer region of an LHX4-ISL2 complex has no significant effect on the structure of the complex, but decreases binding affinity, apparently by increasing flexibility of the linker.
A: LIM/homeobox protein Lhx4,Insulin gene enhancer protein ISL-2 ヘテロ分子
登録者・ソフトウェアが定義した集合体
根拠: SAXS, Light scattering and SAXS data indicate that the molecule is monomeric ion solution. SAXS data indicates a more elongated structure indicating that the extreme bend in the structure is ...根拠: SAXS, Light scattering and SAXS data indicate that the molecule is monomeric ion solution. SAXS data indicates a more elongated structure indicating that the extreme bend in the structure is a crystallization artefact
The authors state that light scattering and SAXS data indicate that the molecule is monomeric ion solution. SAXS data indicates a more elongated structure indicating that the extreme bend in the structure is a crystallization artifact.
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要素
#1: タンパク質
LIM/homeoboxproteinLhx4,InsulingeneenhancerproteinISL-2 / LIM homeobox protein 4 / Islet-2
解像度: 1.92→25 Å / Cor.coef. Fo:Fc: 0.952 / Cor.coef. Fo:Fc free: 0.929 / SU B: 4.568 / SU ML: 0.125 / 交差検証法: THROUGHOUT / ESU R: 0.154 / ESU R Free: 0.147 / 詳細: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS