4XA2 | pdb_00004xa2

Structure of the Major Type IV pilin of Acinetobacter baumannii

• PDB DOI: https://doi.org/10.2210/pdb4XA2/pdb

• Classification: CELL ADHESION
• Organism(s): Escherichia coli O157:H7, Acinetobacter baumannii 1656-2
• Expression System: Escherichia coli BL21
• Mutation(s): No 


• Deposited: 2014-12-12 Released: 2016-01-20 
• Deposition Author(s): Piepenbrink, K.H., Sundberg, E.J.
• Funding Organization(s): National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.98 Å
• R-Value Free: 
  0.241 (Depositor), 0.241 (DCC) 
• R-Value Work: 
  0.181 (Depositor), 0.182 (DCC) 

Literature

Structure of the Major Type IV pilin of Acinetobacter baumannii

Piepenbrink, K.H., Sundberg, E.J.

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 2  

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

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 108.42 kDa 
• Atom Count: 8,222 
• Modeled Residue Count: 978 
• Deposited Residue Count: 996 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Maltose-binding periplasmic protein,MBP-PilA: c	A, B	498	Escherichia coli O157:H7, Acinetobacter baumannii 1656-2 This entity is chimeric	Mutation(s): 0  Gene Names: malE, Z5632, ECs5017, pilA
UniProt
Find proteins for P0AEX9 (Escherichia coli (strain K12)) Explore P0AEX9  Go to UniProtKB:  P0AEX9

Oligosaccharides

Help  

Entity ID: 2
Molecule	Chains	Length	2D Diagram	Glycosylation	D Interactions
alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose	C, D	3		N/A
Glycosylation Resources
GlyTouCan: G96370VA GlyCosmos: G96370VA GlyGen: G96370VA

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
EDO	E [auth A], F [auth A], G [auth B]	1,2-ETHANEDIOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N

Biologically Interesting Molecules (External Reference) 

1 Unique

Entity ID: 2
ID	Chains	Name	Type/Class	2D Diagram	3D Interactions
PRD_900009	C, D	alpha-maltotriose	Oligosaccharide / Nutrient

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.98 Å
• R-Value Free:  0.241 (Depositor), 0.241 (DCC) 
• R-Value Work:  0.181 (Depositor), 0.182 (DCC) 

Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 41.018	α = 90
b = 128.3	β = 90
c = 92.505	γ = 90

Software Package:

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

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2016-01-20 
Deposition Author(s): Piepenbrink, K.H., Sundberg, E.J.

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Funding Organization	Location	Grant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)	United States	F32AI110045-02

Revision History  

• Version 1.0: 2016-01-20
  Type: Initial release
  
• Version 1.1: 2017-09-13
  Changes: Author supporting evidence, Derived calculations
• Version 1.2: 2017-11-22
  Changes: Refinement description
• Version 1.3: 2019-12-11
  Changes: Author supporting evidence
• Version 2.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Atomic model, Data collection, Derived calculations, Non-polymer description, Structure summary
• Version 2.1: 2024-11-20
  Changes: Data collection, Database references, Structure summary