Biotechnology and Biological Sciences Research Council (BBSRC)
BB/P026397/1
英国
Wellcome Trust
108466/Z/15/Z
英国
引用
ジャーナル: iScience / 年: 2021 タイトル: Cryo-EM structure of human mitochondrial HSPD1. 著者: David P Klebl / Matthew C Feasey / Emma L Hesketh / Neil A Ranson / Heiko Wurdak / Frank Sobott / Robin S Bon / Stephen P Muench / 要旨: Chaperonins play an important role in folding newly synthesized or translocated proteins in all organisms. The bacterial chaperonin GroEL has served as a model system for the understanding of these ...Chaperonins play an important role in folding newly synthesized or translocated proteins in all organisms. The bacterial chaperonin GroEL has served as a model system for the understanding of these proteins. In comparison, its human homolog, known as mitochondrial heat shock protein family member D1 (HSPD1) is poorly understood. Here, we present the structure of HSPD1 in the apo state determined by cryo-electron microscopy (cryo-EM). Unlike GroEL, HSPD1 forms mostly single ring assemblies in the absence of co-chaperonin (HSPE1). Comparison with GroEL shows a rotation and increased flexibility of the apical domain. Together with published structures of the HSPD1/HSPE1 co-chaperonin complex, this work gives insight into the structural changes that occur during the catalytic cycle. This new understanding of HSPD1 structure and its rearrangements upon complex formation may provide new insights for the development of HSPD1-targeting treatments against a diverse range of diseases including glioblastoma.
名称: human mitochondrial heat shock protein family member D1 (HSPD1) タイプ: COMPLEX 詳細: produced by heterologous expression, mature HSPD1, apo state Entity ID: all / 由来: RECOMBINANT
分子量
実験値: NO
由来(天然)
生物種: Homo sapiens (ヒト)
由来(組換発現)
生物種: Escherichia coli (大腸菌)
緩衝液
pH: 7.7
試料
濃度: 2.3 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES
急速凍結
装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 90 % / 凍結前の試料温度: 293 K / 詳細: blot time 6 s blot force 6