Structural characterization of the Boca/Mesd maturation factors for LDL-receptor-type β propeller domains.
Structural characterization of the Boca/Mesd maturation factors for LDL-receptor-type β propeller domains.
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DOI:
10.1016/j.str.2010.11.017
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发表时间:
2011-03-09
期刊:
影响因子:
5.7
通讯作者:
Hendrickson, Wayne A.
中科院分区:
文献类型:
--
作者:
Collins, Mark N.;Hendrickson, Wayne A.
Folding and trafficking of low density lipoprotein receptor (LDLR) family members, which play essential roles in development and homeostasis, is mediated by specific chaperones. The Boca/Mesd chaperone family specifically promotes folding and trafficking of the YWTD β-propeller-EGF domain pair found in the ectodomain of all LDLR members. Limited proteolysis, NMR spectroscopy, analytical ultracentrifugation and x-ray crystallography were used to define a conserved core comprised of a structured domain that is preceded by a disordered N-terminal region. High-resolution structures of the ordered domain were determined for homologous proteins from three metazoans. Seven independent protomers reveal a novel ferrodoxin-like superfamily fold with two distinct β-sheet topologies. A conserved hydrophobic surface forms a dimer interface in each crystal, but these differ substantially at the atomic level, indicative of non-specific hydrophobic interactions that may play a role in the chaperone activity of Boca/Mesd family.
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影响因子:
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DOI:
10.1107/s0907444904019158
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