9G7U | pdb_00009g7u

Structure of the Tesup-1 proline-rich binding domain in complex with the proline-rich region of Pih1d1

• PDB DOI: https://doi.org/10.2210/pdb9G7U/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: 2.10 Å
• R-Value Free: 
  0.257 (Depositor), 0.256 (DCC) 
• R-Value Work: 
  0.250 (Depositor), 0.250 (DCC) 
• R-Value Observed: 
  0.250 (Depositor) 

Starting Model: in silico

Literature

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

Manolova, T., Falk, S.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: isothermal titration calorimetry

Macromolecule Content 

• Total Structure Weight: 17.6 kDa 
• Atom Count: 1,082 
• Modeled Residue Count: 126 
• Deposited Residue Count: 144 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
LD36051p	A	124	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

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
PIH1 domain containing 1, isoform D	B	20	Drosophila melanogaster	Mutation(s): 0  Gene Names: Pih1D1, Dmel\CG5792, Pih1d1, CG5792, Dmel_CG5792
UniProt
Find proteins for Q9VK58 (Drosophila melanogaster) Explore Q9VK58  Go to UniProtKB:  Q9VK58

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GOL	C [auth A]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free:  0.257 (Depositor), 0.256 (DCC) 
• R-Value Work:  0.250 (Depositor), 0.250 (DCC) 
• R-Value Observed: 0.250 (Depositor) 

Space Group: I 2 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 41.387	α = 90
b = 75.087	β = 90
c = 112.005	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
XDS	data reduction
Aimless	data scaling
PHASER	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