8QEA

Ultrafast structural transitions in an azobenzene photoswitch at near-atomic resolution: 96 fs structure

PDB DOI: https://doi.org/10.2210/pdb8QEA/pdb

Classification: CELL CYCLE
Organism(s): Bos taurus, synthetic construct
Expression System: Escherichia coli BL21
Mutation(s): No

Deposited: 2023-08-31 Released: 2024-09-11
Deposition Author(s): Weinert, T., Wranik, M., Seidel, H.-P., Church, J., Steinmetz, M.O., Schapiro, I., Standfuss, J.
Funding Organization(s): Swiss National Science Foundation

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 1.80 Å
R-Value Free: 0.232
R-Value Work: 0.198
R-Value Observed: 0.198

Starting Model: experimental
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Ligand Structure Quality Assessment

This is version 1.0 of the entry. See complete history.

Literature

Ultrafast structural transitions in an azobenzene photoswitch at near-atomic resolution

Weinert, T., Wranik, M., Seidel, H.-P., Church, J., Steinmetz, M.O., Schapiro, I., Standfuss, J.

To be published.

Macromolecule Content

Total Structure Weight: 119.73 kDa
Atom Count: 8,998
Modelled Residue Count: 1,017
Deposited Residue Count: 1,065
Unique protein chains: 3

Macromolecules

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(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Tubulin alpha-1B chain	A	451	Bos taurus	Mutation(s): 0
UniProt
Find proteins for P81947 (Bos taurus) Explore P81947 Go to UniProtKB: P81947
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	P81947
Sequence Annotations Expand
Reference Sequence

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(by identity cutoff) | 3D Structure

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Tubulin beta-2B chain	B	445	Bos taurus	Mutation(s): 0
UniProt
Find proteins for Q6B856 (Bos taurus) Explore Q6B856 Go to UniProtKB: Q6B856
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	Q6B856
Sequence Annotations Expand
Reference Sequence

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(by identity cutoff) | 3D Structure

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Designed Ankyrin Repeat Protein (DARPIN) D1	C [auth F]	169	synthetic construct	Mutation(s): 0
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
GTP Query on GTP Download Ideal Coordinates CCD File SDF format, chain D [auth A] SDF format, chain G [auth B] MOL2 format, chain D [auth A] MOL2 format, chain G [auth B]	D [auth A], G [auth B]	GUANOSINE-5'-TRIPHOSPHATE C₁₀ H₁₆ N₅ O₁₄ P₃ XKMLYUALXHKNFT-UUOKFMHZSA-N		Interactions Focus chain D [auth A] Focus chain G [auth B]
IBL (Subject of Investigation/LOI) Query on IBL Download Ideal Coordinates CCD File SDF format, chain H [auth B] MOL2 format, chain H [auth B]	H [auth B]	Azo-Combretastatin A4 (cis) C₁₆ H₁₈ N₂ O₅ AIRZFEKQGRSBNX-UHFFFAOYSA-N		Interactions Focus chain H [auth B]
CA Query on CA Download Ideal Coordinates CCD File SDF format, chain F [auth A] MOL2 format, chain F [auth A]	F [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N		Interactions Focus chain F [auth A]
MG Query on MG Download Ideal Coordinates CCD File SDF format, chain E [auth A] SDF format, chain I [auth B] MOL2 format, chain E [auth A] MOL2 format, chain I [auth B]	E [auth A], I [auth B]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N		Interactions Focus chain E [auth A] Focus chain I [auth B]

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 1.80 Å
R-Value Free: 0.232
R-Value Work: 0.198
R-Value Observed: 0.198
Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 74.53	α = 90
b = 92.58	β = 96.71
c = 83.99	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
CrystFEL	data reduction
CrystFEL	data scaling
PHENIX	phasing

Structure Validation

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Ligand Structure Quality Assessment

Entry History & Funding Information

Deposition Data

Released Date: 2024-09-11

Deposition Author(s):

Funding Organization	Location	Grant Number
Swiss National Science Foundation	Switzerland	310030_207462
Swiss National Science Foundation	Switzerland	310030_197674
Swiss National Science Foundation	Switzerland	310030_192566
Swiss National Science Foundation	Switzerland	CRSII5_213507