4hb0

Crystal structure of CRM1 inhibitor Leptomycin B in complex with CRM1(K541Q,K542Q,R543S,K545Q,K548Q,K579Q)-Ran-RanBP1Crystal structure of CRM1 inhibitor Leptomycin B in complex with CRM1(K541Q,K542Q,R543S,K545Q,K548Q,K579Q)-Ran-RanBP1

Structural highlights 4hb0 is a 3 chain structure with sequence from Homo sapiens and Saccharomyces cerevisiae. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: , , , Related: 4gmx, 4gpt, 4hat, 4hau, 4hav, 4haw, 4hax, 4hay, 4haz, 4hb2, 4hb3, 4hb4 Gene: RAN, ARA24, OK/SW-cl.81 (Homo sapiens), YRB1, CST20, HTN1, SFO1, YDR002W, YD8119.08 (Saccharomyces cerevisiae), CRM1, KAP124, XPO1, YGR218W, G8514 (Saccharomyces cerevisiae) Resources: FirstGlance, OCA, RCSB, PDBsum Publication Abstract from PubMed The polyketide natural product Leptomycin B inhibits nuclear export mediated by the karyopherin protein chromosomal region maintenance 1 (CRM1). Here, we present 1.8- to 2.0-A-resolution crystal structures of CRM1 bound to Leptomycin B and related inhibitors Anguinomycin A and Ratjadone A. Structural and complementary chemical analyses reveal an unexpected mechanism of inhibition involving covalent conjugation and CRM1-mediated hydrolysis of the natural products' lactone rings. Furthermore, mutagenesis reveals the mechanism of hydrolysis by CRM1. The nuclear export signal (NES)-binding groove of CRM1 is able to drive a chemical reaction in addition to binding protein cargos for transport through the nuclear pore complex. Nuclear export inhibition through covalent conjugation and hydrolysis of Leptomycin B by CRM1.,Sun Q, Carrasco YP, Hu Y, Guo X, Mirzaei H, Macmillan J, Chook YM Proc Natl Acad Sci U S A. 2013 Jan 7. PMID:23297231 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Exportin GTP-binding protein

spinqualitylabelsall models 4hb0, resolution 2.20Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image