8E1C | pdb_00008e1c

Crystal Structure of Nanobody VHH222 Specific for PA14 Cif

• PDB DOI: https://doi.org/10.2210/pdb8E1C/pdb

• Classification: IMMUNE SYSTEM
• Organism(s): Vicugna pacos
• Expression System: Escherichia coli BL21
• Mutation(s): No 


• Deposited: 2022-08-10 Released: 2023-10-04 
• Deposition Author(s): Simard, A.R., Taher, N.M., Balsam, S.S., Madden, D.R.
• Funding Organization(s): National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID), National Institutes of Health/National Institute of Diabetes and Digestive and Kidney Disease (NIH/NIDDK), National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS), Cystic Fibrosis Foundation

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 
  0.224 (Depositor), 0.224 (DCC) 
• R-Value Work: 
  0.212 (Depositor), 0.212 (DCC) 
• R-Value Observed: 
  0.213 (Depositor) 

Literature

Crystal Structure of Nanobody VHH222 Specific for PA14 Cif

Simard, A.R., Madden, D.R.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly Evidence: gel filtration

Macromolecule Content 

• Total Structure Weight: 13.53 kDa 
• Atom Count: 939 
• Modeled Residue Count: 117 
• Deposited Residue Count: 126 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Nanobody VHH222	A	126	Vicugna pacos	Mutation(s): 0

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free:  0.224 (Depositor), 0.224 (DCC) 
• R-Value Work:  0.212 (Depositor), 0.212 (DCC) 
• R-Value Observed: 0.213 (Depositor) 

Space Group: P 3₁ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 58.006	α = 90
b = 58.006	β = 90
c = 75.935	γ = 120

Software Package:

Software Name	Purpose
XDS	data reduction
XSCALE	data scaling
PHASER	phasing
PHENIX	refinement
Coot	model building

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2023-10-04 
Deposition Author(s): Simard, A.R., Taher, N.M., Balsam, S.S., Madden, D.R.

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Funding Organization	Location	Grant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)	United States	R01-AI091699
National Institutes of Health/National Institute of Diabetes and Digestive and Kidney Disease (NIH/NIDDK)	United States	P30-DK117469
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)	United States	P20-GM113132
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)	United States	T32AI007519
Cystic Fibrosis Foundation	United States	STANTO19R0

Revision History  

• Version 1.0: 2023-10-04
  Type: Initial release
  
• Version 1.1: 2024-10-16
  Changes: Structure summary
• Version 1.2: 2025-09-17
  Changes: Structure summary