Abstract:
:We present a strategy to obtain milligrams of highly post-translationally modified eukaryotic proteins, transiently expressed in mammalian cells as rigid or cleavable fusions with a mammalianized version of bacterial maltose-binding protein (mMBP). This variant was engineered to combine mutations that enhance MBP solubility and affinity purification, as well as provide crystal-packing interactions for increased crystallizability. Using this cell type-independent approach, we could increase the expression of secreted and intracellular human proteins up to 200-fold. By molecular replacement with MBP, we readily determined five novel high-resolution structures of rigid fusions of targets that otherwise defied crystallization.
journal_name
J Struct Bioljournal_title
Journal of structural biologyauthors
Bokhove M,Sadat Al Hosseini H,Saito T,Dioguardi E,Gegenschatz-Schmid K,Nishimura K,Raj I,de Sanctis D,Han L,Jovine Ldoi
10.1016/j.jsb.2016.01.016subject
Has Abstractpub_date
2016-04-01 00:00:00pages
1-7issue
1eissn
1047-8477issn
1095-8657pii
S1047-8477(16)30015-6journal_volume
194pub_type
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