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Open data
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Basic information
Entry | Database: PDB / ID: 8v3m | ||||||
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Title | CCP5 apo structure | ||||||
![]() | Cytosolic carboxypeptidase-like protein 5 | ||||||
![]() | HYDROLASE / carboxypeptidase deglutamylation branch glutamate removal microtubule | ||||||
Function / homology | ![]() tubulin-glutamate carboxypeptidase / protein deglutamylation / protein side chain deglutamylation / protein branching point deglutamylation / C-terminal protein deglutamylation / Carboxyterminal post-translational modifications of tubulin / Hydrolases; Acting on peptide bonds (peptidases); Metallocarboxypeptidases / metallocarboxypeptidase activity / tubulin binding / mitotic spindle ...tubulin-glutamate carboxypeptidase / protein deglutamylation / protein side chain deglutamylation / protein branching point deglutamylation / C-terminal protein deglutamylation / Carboxyterminal post-translational modifications of tubulin / Hydrolases; Acting on peptide bonds (peptidases); Metallocarboxypeptidases / metallocarboxypeptidase activity / tubulin binding / mitotic spindle / microtubule cytoskeleton / midbody / defense response to virus / proteolysis / zinc ion binding / nucleus / cytosol / cytoplasm Similarity search - Function | ||||||
Biological species | ![]() | ||||||
Method | ![]() ![]() ![]() | ||||||
![]() | Chen, J. / Zehr, E.A. / Gruschus, J.M. / Szyk, A. / Liu, Y. / Tanner, M.E. / Tjandra, N. / Roll-Mecak, A. | ||||||
Funding support | ![]()
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![]() | ![]() Title: Tubulin code eraser CCP5 binds branch glutamates by substrate deformation. Authors: Jiayi Chen / Elena A Zehr / James M Gruschus / Agnieszka Szyk / Yanjie Liu / Martin E Tanner / Nico Tjandra / Antonina Roll-Mecak / ![]() ![]() Abstract: Microtubule function is modulated by the tubulin code, diverse posttranslational modifications that are altered dynamically by writer and eraser enzymes. Glutamylation-the addition of branched ...Microtubule function is modulated by the tubulin code, diverse posttranslational modifications that are altered dynamically by writer and eraser enzymes. Glutamylation-the addition of branched (isopeptide-linked) glutamate chains-is the most evolutionarily widespread tubulin modification. It is introduced by tubulin tyrosine ligase-like enzymes and erased by carboxypeptidases of the cytosolic carboxypeptidase (CCP) family. Glutamylation homeostasis, achieved through the balance of writers and erasers, is critical for normal cell function, and mutations in CCPs lead to human disease. Here we report cryo-electron microscopy structures of the glutamylation eraser CCP5 in complex with the microtubule, and X-ray structures in complex with transition-state analogues. Combined with NMR analysis, these analyses show that CCP5 deforms the tubulin main chain into a unique turn that enables lock-and-key recognition of the branch glutamate in a cationic pocket that is unique to CCP family proteins. CCP5 binding of the sequences flanking the branch point primarily through peptide backbone atoms enables processing of diverse tubulin isotypes and non-tubulin substrates. Unexpectedly, CCP5 exhibits inefficient processing of an abundant β-tubulin isotype in the brain. This work provides an atomistic view into glutamate branch recognition and resolution, and sheds light on homeostasis of the tubulin glutamylation syntax. | ||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 124.6 KB | Display | ![]() |
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PDB format | ![]() | 92.9 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 447.1 KB | Display | ![]() |
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Full document | ![]() | 449.3 KB | Display | |
Data in XML | ![]() | 21.9 KB | Display | |
Data in CIF | ![]() | 31.7 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 8v3nC ![]() 8v3oC ![]() 8v3pC ![]() 8v3qC ![]() 8v3rC ![]() 8v3sC ![]() 8v4kC ![]() 8v4lC ![]() 8v4mC C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
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Assembly
Deposited unit | ![]()
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Unit cell |
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Components
#1: Protein | Mass: 59170.668 Da / Num. of mol.: 1 / Mutation: E516A,residues 339-424 replaced with a SGSGG loop Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() References: UniProt: Q8NDL9, Hydrolases; Acting on peptide bonds (peptidases); Metallocarboxypeptidases, tubulin-glutamate carboxypeptidase | ||||||||
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#2: Chemical | #3: Chemical | #4: Chemical | ChemComp-ZN / | #5: Water | ChemComp-HOH / | Has ligand of interest | N | |
-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 2.39 Å3/Da / Density % sol: 48.48 % |
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Crystal grow | Temperature: 294 K / Method: vapor diffusion, hanging drop / pH: 7 Details: 0.15 M DL-Malic acid, pH7.0, 0.1 M imidazole, pH7.0, 16% PEG MME 550 |
-Data collection
Diffraction | Mean temperature: 93 K / Serial crystal experiment: N |
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Diffraction source | Source: ![]() ![]() ![]() |
Detector | Type: DECTRIS EIGER X 16M / Detector: PIXEL / Date: Feb 10, 2022 |
Radiation | Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 0.9792 Å / Relative weight: 1 |
Reflection | Resolution: 1.8→80.93 Å / Num. obs: 51328 / % possible obs: 99.8 % / Redundancy: 13.2 % / Biso Wilson estimate: 32.95 Å2 / CC1/2: 0.999 / Rmerge(I) obs: 0.085 / Rpim(I) all: 0.034 / Rrim(I) all: 0.091 / Net I/σ(I): 15.4 |
Reflection shell | Resolution: 1.8→1.84 Å / Redundancy: 12.8 % / Rmerge(I) obs: 1.658 / Mean I/σ(I) obs: 1.6 / Num. unique obs: 2975 / CC1/2: 0.669 / Rrim(I) all: 1.801 / % possible all: 99.6 |
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Processing
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Refinement | Method to determine structure: ![]()
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Solvent computation | Shrinkage radii: 0.9 Å / VDW probe radii: 1.1 Å / Solvent model: FLAT BULK SOLVENT MODEL | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refinement step | Cycle: LAST / Resolution: 1.8→55.16 Å
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Refine LS restraints |
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LS refinement shell |
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