1MWQ

Structure of HI0828, a Hypothetical Protein from Haemophilus influenzae with a Putative Active-Site Phosphohistidine

• PDB DOI: https://doi.org/10.2210/pdb1MWQ/pdb

• Classification: STRUCTURAL GENOMICS, UNKNOWN FUNCTION
• Organism(s): Haemophilus influenzae
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2002-09-30 Released: 2003-11-25 
• Deposition Author(s): Willis, M.A., Krajewski, W., Chalamasetty, V.R., Reddy, P., Howard, A., Herzberg, O., Structure 2 Function Project (S2F)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 0.99 Å
• R-Value Free: 0.132 
• R-Value Work: 0.108 
• R-Value Observed: 0.109 

Literature

Structure of YciI from Haemophilus influenzae (HI0828) reveals a ferredoxin-like alpha/beta-fold with a histidine/aspartate centered catalytic site

Willis, M.A., Song, F., Zhuang, Z., Krajewski, W., Chalamasetty, V.R., Reddy, P., Howard, A., Dunaway-Mariano, D., Herzberg, O.

(2005) Proteins 59: 648-652

• PubMed: 15779043 
• DOI: https://doi.org/10.1002/prot.20411
• Primary Citation of Related Structures:  
  1MWQ

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Organizational Affiliation: 

Center for Advanced Research in Biotechnology, University of Maryland Biotechnology Institute, Rockville, Maryland 20850, USA.

Biological Assembly 1  

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

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

Biological Assembly Evidence: light scattering

Biological Assembly 2  

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

Biological assembly 2 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 23.57 kDa 
• Atom Count: 2,076 
• Modelled Residue Count: 200 
• Deposited Residue Count: 202 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
HYPOTHETICAL PROTEIN HI0828	A, B	101	Haemophilus influenzae	Mutation(s): 0
UniProt
Find proteins for P44887 (Haemophilus influenzae (strain ATCC 51907 / DSM 11121 / KW20 / Rd)) Explore P44887  Go to UniProtKB:  P44887

Small Molecules

Ligands 5 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
1PE	I [auth A]	PENTAETHYLENE GLYCOL C10 H22 O6 JLFNLZLINWHATN-UHFFFAOYSA-N
CAC	H [auth A]	CACODYLATE ION C2 H6 As O2 OGGXGZAMXPVRFZ-UHFFFAOYSA-M
PEG	O [auth B]	DI(HYDROXYETHYL)ETHER C4 H10 O3 MTHSVFCYNBDYFN-UHFFFAOYSA-N
ZN	C [auth A], D [auth A], J [auth B], K [auth B]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N
CL	E [auth A], F [auth A], G [auth A], L [auth B], M [auth B], N [auth B]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A, B	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 0.99 Å
• R-Value Free: 0.132 
• R-Value Work: 0.108 
• R-Value Observed: 0.109 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 42.476	α = 90
b = 63.317	β = 90
c = 75.465	γ = 90

Software Package:

Software Name	Purpose
SHELXL-97	refinement
SCALEPACK	data scaling
XPREP	data reduction
SOLVE	phasing
RESOLVE	model building
CNS	refinement
SHELX	model building
DENZO	data reduction
RESOLVE	phasing
CNS	phasing
SHELX	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2003-11-25 
Deposition Author(s): Willis, M.A., Krajewski, W., Chalamasetty, V.R., Reddy, P., Howard, A., Herzberg, O., Structure 2 Function Project (S2F)

Revision History  

• Version 1.0: 2003-11-25
  Type: Initial release
  
• Version 1.1: 2008-04-28
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Non-polymer description, Version format compliance
• Version 1.3: 2017-10-25
  Changes: Author supporting evidence
• Version 1.4: 2019-07-24
  Changes: Data collection, Derived calculations, Refinement description