9G7L | pdb_00009g7l

Structure of the proline-rich binding domain of Tesup-1 in complex with dZfc3h1 peptide

• PDB DOI: https://doi.org/10.2210/pdb9G7L/pdb

• Classification: PROTEIN BINDING
• Organism(s): Drosophila melanogaster
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2024-07-22 Released: 2026-02-04 
• Deposition Author(s): Manolova, T., Falk, S.
• Funding Organization(s): Austrian Science Fund, DOC Fellowship of the Austrian Academy of Sciences

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 
  0.248 (Depositor), 0.246 (DCC) 
• R-Value Work: 
  0.216 (Depositor), 0.217 (DCC) 
• R-Value Observed: 
  0.218 (Depositor) 

Starting Model: in silico

Literature

Cotranscriptional gene silencing by the Piwi-piRNA pathway depends on the nuclear RNA exosome

Yu, C., Manolova, T., Tirian, L., Hohmann, U., Handler, D., Nemcko, F., Portell I De Montserrat, J., Giraud, G., Duchek, P., Roitinger, E., Stark, A., Falk, S., Brennecke, J.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: isothermal titration calorimetry

Macromolecule Content 

• Total Structure Weight: 35.94 kDa 
• Atom Count: 2,352 
• Modeled Residue Count: 262 
• Deposited Residue Count: 304 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
LD36051p,LD02331p	A, B	152	Drosophila melanogaster	Mutation(s): 0  Gene Names: CG10057, CG31510-RA, Dmel-CG31510, CG31510, Dmel_CG31510
UniProt
Find proteins for Q9VBX4 (Drosophila melanogaster) Explore Q9VBX4  Go to UniProtKB:  Q9VBX4
Find proteins for Q9W238 (Drosophila melanogaster) Explore Q9W238  Go to UniProtKB:  Q9W238
UniProt Groups	Q9VBX4Q9W238

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
TLA	C [auth B], E [auth B]	L(+)-TARTARIC ACID C4 H6 O6 FEWJPZIEWOKRBE-JCYAYHJZSA-N
ACT	D [auth B]	ACETATE ION C2 H3 O2 QTBSBXVTEAMEQO-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free:  0.248 (Depositor), 0.246 (DCC) 
• R-Value Work:  0.216 (Depositor), 0.217 (DCC) 
• R-Value Observed: 0.218 (Depositor) 

Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 121.568	α = 90
b = 48.625	β = 113.038
c = 66.579	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
DIALS	data scaling
XDS	data reduction
PHENIX	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2026-02-04 
Deposition Author(s): Manolova, T., Falk, S.

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Funding Organization	Location	Grant Number
Austrian Science Fund	Austria	10.55776 / I6110
Austrian Science Fund	Austria	10.55776 / DOC177
DOC Fellowship of the Austrian Academy of Sciences	Austria	The function of CCDC174 - a novel component of the exon junction complex

Revision History  

• Version 1.0: 2026-02-04
  Type: Initial release