6y4n | pdb_00006y4n

Structure of Tubulin Tyrosine Ligase in Complex with Tb116

spinqualitylabelsall models 6y4n, resolution 2.85Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 6y4n is a 6 chain structure with sequence from Gallus gallus, Rattus norvegicus and Sus scrofa. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: ACP, CA, GDP, GTP, MES, MG, O9B, O9K, O9N, P6S, PEG, PGE, VAL Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function TBA1B_PIG Tubulin is the major constituent of microtubules. It binds two moles of GTP, one at an exchangeable site on the beta chain and one at a non-exchangeable site on the alpha chain. Publication Abstract from PubMed Molecular design, synthesis, and biological evaluation of tubulysin analogues, linker-drugs, and antibody-drug conjugates are described. Among the new discoveries reported is the identification of new potent analogues within the tubulysin family that carry a C11 alkyl ether substituent, rather than the usual ester structural motif at that position, a fact that endows the former with higher plasma stability than that of the latter. Also described herein are X-ray crystallographic analysis studies of two tubulin-tubulysin complexes formed within the alpha/beta interface between two tubulin heterodimers and two highly potent tubulysin analogues, one of which exhibited a different binding mode to the one previously reported for tubulysin M. The X-ray crystallographic analysis-derived new insights into the binding modes of these tubulysin analogues explain their potencies and provide inspiration for further design, synthesis, and biological investigations within this class of antitumor agents. A number of these analogues were conjugated as payloads with appropriate linkers at different sites allowing their attachment onto targeting antibodies for cancer therapies. A number of such antibody-drug conjugates were constructed and tested, both in vivo and in vitro, leading to the identification of at least one promising ADC (Herceptin-LD3), warranting further investigations. Design, Synthesis, and Biological Evaluation of Tubulysin Analogues, Linker-Drugs, and Antibody-Drug Conjugates, Insights into Structure-Activity Relationships, and Tubulysin-Tubulin Binding Derived from X-ray Crystallographic Analysis.,Nicolaou KC, Pan S, Pulukuri KK, Ye Q, Rigol S, Erande RD, Vourloumis D, Nocek BP, Munneke S, Lyssikatos J, Valdiosera A, Gu C, Lin B, Sarvaiaya H, Trinidad J, Sandoval J, Lee C, Hammond M, Aujay M, Taylor N, Pysz M, Purcell JW, Gavrilyuk J J Org Chem. 2021 Feb 19;86(4):3377-3421. doi: 10.1021/acs.joc.0c02755. Epub 2021 , Feb 5. PMID:33544599 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Stathmin-4 3D structures Tubulin 3D Structures Tubulin tyrosine ligase

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