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-Structure paper
Title | Cryo-EM of multiple cage architectures reveals a universal mode of clathrin self-assembly. |
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Journal, issue, pages | Nat Struct Mol Biol, Vol. 26, Issue 10, Page 890-898, Year 2019 |
Publish date | Oct 3, 2019 |
Authors | Kyle L Morris / Joseph R Jones / Mary Halebian / Shenping Wu / Michael Baker / Jean-Paul Armache / Amaurys Avila Ibarra / Richard B Sessions / Alexander D Cameron / Yifan Cheng / Corinne J Smith / |
PubMed Abstract | Clathrin forms diverse lattice and cage structures that change size and shape rapidly in response to the needs of eukaryotic cells during clathrin-mediated endocytosis and intracellular trafficking. ...Clathrin forms diverse lattice and cage structures that change size and shape rapidly in response to the needs of eukaryotic cells during clathrin-mediated endocytosis and intracellular trafficking. We present the cryo-EM structure and molecular model of assembled porcine clathrin, providing insights into interactions that stabilize key elements of the clathrin lattice, namely, between adjacent heavy chains, at the light chain-heavy chain interface and within the trimerization domain. Furthermore, we report cryo-EM maps for five different clathrin cage architectures. Fitting structural models to three of these maps shows that their assembly requires only a limited range of triskelion leg conformations, yet inherent flexibility is required to maintain contacts. Analysis of the protein-protein interfaces shows remarkable conservation of contact sites despite architectural variation. These data reveal a universal mode of clathrin assembly that allows variable cage architecture and adaptation of coated vesicle size and shape during clathrin-mediated vesicular trafficking or endocytosis. |
External links | Nat Struct Mol Biol / PubMed:31582853 / PubMed Central |
Methods | EM (single particle) |
Resolution | 4.69 - 23.68 Å |
Structure data | EMDB-0114: EMDB-0115: EMDB-0116: EMDB-0118: EMDB-0120: EMDB-0121: EMDB-0122: EMDB-0123: EMDB-0124: EMDB-0125: |
Source |
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Keywords | TRANSPORT PROTEIN / clathrin / coat protein / endocytosis / trafficking |