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- PDB-8v3q: Structure of CCP5 class1 -

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Basic information

Entry
Database: PDB / ID: 8v3q
TitleStructure of CCP5 class1
Components
  • Cytosolic carboxypeptidase-like protein 5
  • beta tubulin tail
KeywordsHYDROLASE/SUBSTRATE / carboxypeptidase / deglutamylation / branch glutamate removal / microtubule / HYDROLASE / HYDROLASE-SUBSTRATE complex
Function / homology
Function and homology information


tubulin-glutamate carboxypeptidase / protein deglutamylation / protein side chain deglutamylation / protein branching point deglutamylation / C-terminal protein deglutamylation / Carboxyterminal post-translational modifications of tubulin / intercellular bridge / Hydrolases; Acting on peptide bonds (peptidases); Metallocarboxypeptidases / metallocarboxypeptidase activity / tubulin binding ...tubulin-glutamate carboxypeptidase / protein deglutamylation / protein side chain deglutamylation / protein branching point deglutamylation / C-terminal protein deglutamylation / Carboxyterminal post-translational modifications of tubulin / intercellular bridge / 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 / cytoplasm / cytosol
Similarity search - Function
Cytosolic carboxypeptidase-like protein 5 catalytic domain / Cytosolic carboxypeptidase, N-terminal / Cytosolic carboxypeptidase N-terminal domain / Peptidase family M14 domain profile. / Peptidase M14, carboxypeptidase A / Zinc carboxypeptidase
Similarity search - Domain/homology
GLUTAMIC ACID / Cytosolic carboxypeptidase-like protein 5
Similarity search - Component
Biological speciesHomo sapiens (human)
Sus scrofa (pig)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.1 Å
AuthorsChen, J. / Zehr, E.A. / Gruschus, J.M. / Szyk, A. / Liu, Y. / Tanner, M.E. / Tjandra, N. / Roll-Mecak, A.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)1ZIANS003163 United States
CitationJournal: Nature / Year: 2024
Title: Tubulin code eraser CCP5 binds branch glutamates by substrate deformation
Authors: Chen, J. / Zehr, E.A. / Gruschus, J.M. / Szyk, A. / Liu, Y. / Tanner, M.E. / Tjandra, N. / Roll-Mecak, A.
History
DepositionNov 28, 2023Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jul 17, 2024Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Cytosolic carboxypeptidase-like protein 5
M: beta tubulin tail
hetero molecules


Theoretical massNumber of molelcules
Total (without water)69,2704
Polymers69,0582
Non-polymers2132
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein Cytosolic carboxypeptidase-like protein 5


Mass: 68229.547 Da / Num. of mol.: 1 / Fragment: residues 2-605 / Mutation: E516A
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: AGBL5 / Plasmid: pFastBac / Details (production host): His6_MBP_Asn10_TEV / Cell line (production host): Sf9 / Production host: Spodoptera frugiperda (fall armyworm) / Strain (production host): IPLB-Sf-21-AE / References: UniProt: Q8NDL9
#2: Protein/peptide beta tubulin tail


Mass: 827.967 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Sus scrofa (pig) / Organ: brain
#3: Chemical ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Zn
#4: Chemical ChemComp-GLU / GLUTAMIC ACID


Type: L-peptide linking / Mass: 147.129 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Formula: C5H9NO4
Has ligand of interestY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: CCP5 in complex with beta tubulin tail / Type: COMPLEX
Details: Focused refinement of CCP5:microtubule class#1 structure
Entity ID: #1 / Source: MULTIPLE SOURCES
Molecular weightExperimental value: NO
Buffer solutionpH: 7.4
Buffer component
IDConc.NameFormulaBuffer-ID
120 mMHEPESC8H18N2O4S1
2150 mMpotassium chlorideKCl1
31 mMTCEPC9H15O6P1
SpecimenConc.: 0.3 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: GOLD / Grid mesh size: 300 divisions/in. / Grid type: Au-flat 1.2/1.3
VitrificationInstrument: LEICA EM GP / Cryogen name: ETHANE / Humidity: 90 % / Chamber temperature: 303 K

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal magnification: 135000 X / Nominal defocus max: 2200 nm / Nominal defocus min: 800 nm / Cs: 2.7 mm / C2 aperture diameter: 70 µm / Alignment procedure: COMA FREE
Specimen holderCryogen: NITROGEN
Image recordingAverage exposure time: 1.651 sec. / Electron dose: 53.34 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)
EM imaging opticsEnergyfilter slit width: 20 eV

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Processing

EM software
IDNameVersionCategory
7UCSF Chimeramodel fitting
9PHENIX1.20.1-4487model refinement
13RELION3.0.83D reconstruction
CTF correctionType: NONE
Particle selectionNum. of particles selected: 162521
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 3.1 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 239249 / Num. of class averages: 1 / Symmetry type: POINT
Atomic model buildingProtocol: RIGID BODY FIT / Space: REAL / Target criteria: Cross-correlation coefficient
Atomic model buildingDetails: crystal structure of apo CCP5 / Source name: Other / Type: experimental model
RefinementCross valid method: NONE

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