5SV6

Crystal structure of MxaJ from Methlophaga aminisulfidivorans MPT

• PDB DOI: https://doi.org/10.2210/pdb5SV6/pdb

• Classification: UNKNOWN FUNCTION
• Organism(s): Methylophaga aminisulfidivorans MP
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2016-08-04 Released: 2017-07-12 
• Deposition Author(s): Choi, J.M., Lee, S.H.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.92 Å
• R-Value Free: 0.239 
• R-Value Work: 0.178 
• R-Value Observed: 0.184 

Literature

MxaJ structure reveals a periplasmic binding protein-like architecture with unique secondary structural elements

Choi, J.M., Cao, T.P., Kim, S.W., Lee, K.H., Lee, S.H.

(2017) Proteins 85: 1379-1386

• PubMed: 28295618 
• DOI: https://doi.org/10.1002/prot.25283
• Primary Citation of Related Structures:  
  5SV6


• PubMed Abstract: 
  

  MxaJ is a component of type II methanol dehydrogenase (MDH) that mediates electron transfer during methanol oxidation in methanotrophic bacteria. However, little is known about how MxaJ structurally cooperates with MDH and Cytochrome c _L . Here, we report for the first time the crystal structure of MxaJ. MxaJ consists of eight α-helices and six β-strands, and resembles the "bi-lobate" folding architecture found in periplasmic binding proteins. Distinctive features of MxaJ include prominent loops and a β-strand around the hinge region supporting the ligand-binding cavity, which might provide a more favorable framework for interacting with proteins rather than small molecules. Proteins 2017; 85:1379-1386. © 2017 Wiley Periodicals, Inc.

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Organizational Affiliation: 

Department of Cellular and Molecular Medicine, Chosun University School of Medicine, Gwangju, 61452, Korea.

Biological Assembly 1  

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

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

Macromolecule Content

• Total Structure Weight: 32.92 kDa 
• Atom Count: 2,226 
• Modelled Residue Count: 246 
• Deposited Residue Count: 291 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Extracellular solute-binding protein, family 3	A	291	Methylophaga aminisulfidivorans MP	Mutation(s): 0  Gene Names: mxaJ
UniProt
Find proteins for A3FJ49 (Methylophaga aminisulfidivorans MP) Explore A3FJ49  Go to UniProtKB:  A3FJ49

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
BR	B [auth A]	BROMIDE ION Br CPELXLSAUQHCOX-UHFFFAOYSA-M

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

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.92 Å
• R-Value Free: 0.239 
• R-Value Work: 0.178 
• R-Value Observed: 0.184 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 37.127	α = 90
b = 63.761	β = 90
c = 99.246	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
HKL-2000	data reduction
HKL-2000	data scaling
PHENIX	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2017-07-12 
Deposition Author(s): Choi, J.M., Lee, S.H.

Revision History  

• Version 1.0: 2017-07-12
  Type: Initial release