7XR0 | pdb_00007xr0

Crystal structure of T2R-TTL-27a complex

• PDB DOI: https://doi.org/10.2210/pdb7XR0/pdb

• Classification: STRUCTURAL PROTEIN
• Organism(s): Sus scrofa, Mus musculus, Gallus gallus
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2022-05-09 Released: 2023-05-17 
• Deposition Author(s): Lun, T., Wu, C.Y.
• Funding Organization(s): Not funded

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Free: 
  0.246 (Depositor), 0.244 (DCC) 
• R-Value Work: 
  0.205 (Depositor), 0.206 (DCC) 
• R-Value Observed: 
  0.206 (Depositor) 

Starting Model: experimental

Literature

Crystal structure of T2R-TTL-27a complex

Lun, T., ChengYong, W.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 6-mer - A2B2C1D1 Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Hetero 6-mer - A4B1C1 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: gel filtration

Macromolecule Content 

• Total Structure Weight: 264.45 kDa 
• Atom Count: 17,617 
• Modeled Residue Count: 2,190 
• Deposited Residue Count: 2,317 
• Unique protein chains: 4

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Tubulin alpha-1B chain	A, C	450	Sus scrofa	Mutation(s): 0  Gene Names: TUBA1B EC: 3.6.5
UniProt
Find proteins for Q2XVP4 (Sus scrofa) Explore Q2XVP4  Go to UniProtKB:  Q2XVP4

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Tubulin beta chain	B, D	445	Sus scrofa	Mutation(s): 0  Gene Names: LOC100624785
UniProt
Find proteins for P02554 (Sus scrofa) Explore P02554  Go to UniProtKB:  P02554

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Stathmin-4	E	143	Mus musculus	Mutation(s): 0  Gene Names: Stmn4
UniProt & NIH Common Fund Data Resources
Find proteins for P63042 (Mus musculus) Explore P63042  Go to UniProtKB:  P63042
IMPC:  MGI:1931224

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
TTL	F	384	Gallus gallus	Mutation(s): 0  Gene Names: TTL

Small Molecules

Ligands 7 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GTP	G [auth A], P [auth C]	GUANOSINE-5'-TRIPHOSPHATE C10 H16 N5 O14 P3 XKMLYUALXHKNFT-UUOKFMHZSA-N
GDP	K [auth B], S [auth D]	GUANOSINE-5'-DIPHOSPHATE C10 H15 N5 O11 P2 QGWNDRXFNXRZMB-UUOKFMHZSA-N
GWC (Subject of Investigation/LOI)	O [auth B], T [auth D]	2-chloranyl-5-fluoranyl-N-(4-methoxyphenyl)-N-methyl-quinazolin-4-amine C16 H13 Cl F N3 O RBKSQTIPGBFFEK-UHFFFAOYSA-N
MES	M [auth B], N [auth B]	2-(N-MORPHOLINO)-ETHANESULFONIC ACID C6 H13 N O4 S SXGZJKUKBWWHRA-UHFFFAOYSA-N
CA	I [auth A], R [auth C]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N
CL	J [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M
MG	H [auth A], L [auth B], Q [auth C]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Free:  0.246 (Depositor), 0.244 (DCC) 
• R-Value Work:  0.205 (Depositor), 0.206 (DCC) 
• R-Value Observed: 0.206 (Depositor) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 105.222	α = 90
b = 157.666	β = 90
c = 181.74	γ = 90

Software Package:

Software Name	Purpose
Aimless	data scaling
PHENIX	refinement
PDB_EXTRACT	data extraction
XDS	data reduction
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2023-05-17 
Deposition Author(s): Lun, T., Wu, C.Y.

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Funding Organization	Location	Grant Number
Not funded		--

Revision History  

• Version 1.0: 2023-05-17
  Type: Initial release
  
• Version 1.1: 2023-11-29
  Changes: Data collection, Refinement description
• Version 1.2: 2025-09-17
  Changes: Advisory, Derived calculations, Structure summary