5u52

2 helix minimized version of the B-domain from Protein A (Z34C0 bound to IgG1 Fc (monoclinic form)2 helix minimized version of the B-domain from Protein A (Z34C0 bound to IgG1 Fc (monoclinic form)

Structural highlights 5u52 is a 4 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: , , , Related: 1l6x, 5u4y, 5u66 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed The well-studied B-domain from Staphylococcal protein A is a 59 amino acid three-helix bundle that binds the Fc portion of IgG with a dissociation constant of ~35 nM. The B-domain variant bearing a Gly to Ala mutation (=Z-domain) has been the subject of efforts to minimize a domain's size while retaining its function. We report X-ray crystallographic characterization of three steps in such a process using complexes with Fc: the full three-helix Z-domain, a 34 amino acid two-helix version called Z34C and a 13 amino acid single helix stabilized with an exo-helix tether, called LH1. 3-2-1: Structural insights from stepwise shrinkage of a three-helix Fc-binding domain to a single helix.,Ultsch M, Braisted A, Maun HR, Eigenbrot C Protein Eng Des Sel. 2017 May 5:1-7. doi: 10.1093/protein/gzx029. PMID:28475752 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

spinqualitylabelsall models 5u52, resolution 1.94Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image