6M4V
Crystal structure of MBP fused split FKBP in complex with rapamycin
Summary for 6M4V
| Entry DOI | 10.2210/pdb6m4v/pdb |
| Descriptor | chimera of Maltose/maltodextrin-binding periplasmic protein and Peptidyl-prolyl cis-trans isomerase FKBP1A, Peptidyl-prolyl cis-trans isomerase FKBP1A, RAPAMYCIN IMMUNOSUPPRESSANT DRUG, ... (5 entities in total) |
| Functional Keywords | rapamycin, complex, kinase, isomerase |
| Biological source | Escherichia coli K-12 More |
| Total number of polymer chains | 4 |
| Total formula weight | 107043.63 |
| Authors | Kikuchi, M.,Wu, D.,Inoue, T.,Umehara, T. (deposition date: 2020-03-09, release date: 2020-08-26, Last modification date: 2023-11-29) |
| Primary citation | Wu, H.D.,Kikuchi, M.,Dagliyan, O.,Aragaki, A.K.,Nakamura, H.,Dokholyan, N.V.,Umehara, T.,Inoue, T. Rational design and implementation of a chemically inducible heterotrimerization system. Nat.Methods, 17:928-936, 2020 Cited by PubMed Abstract: Chemically inducible dimerization (CID) uses a small molecule to induce binding of two different proteins. CID tools such as the FK506-binding protein-FKBP-rapamycin-binding- (FKBP-FRB)-rapamycin system have been widely used to probe molecular events inside and outside cells. While various CID tools are available, chemically inducible trimerization (CIT) does not exist, due to inherent challenges in designing a chemical that simultaneously binds three proteins with high affinity and specificity. Here, we developed CIT by rationally splitting FRB and FKBP. Cellular and structural datasets showed efficient trimerization of split pairs of FRB or FKBP with full-length FKBP or FRB, respectively, by rapamycin. CIT rapidly induced tri-organellar junctions and perturbed intended membrane lipids exclusively at select membrane contact sites. By conferring one additional condition to what is achievable with CID, CIT expands the types of manipulation in single live cells to address cell biology questions otherwise intractable and engineer cell functions for future synthetic biology applications. PubMed: 32747768DOI: 10.1038/s41592-020-0913-x PDB entries with the same primary citation |
| Experimental method | X-RAY DIFFRACTION (2.92 Å) |
Structure validation
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