1E5K

CRYSTAL STRUCTURE OF THE MOLYBDENUM COFACTOR BIOSYNTHESIS PROTEIN MOBA (PROTEIN FA) FROM ESCHERICHIA COLI AT NEAR ATOMIC RESOLUTION

• PDB DOI:  https://doi.org/10.2210/pdb1E5K/pdb

• Classification: MOLYBDOPTERIN NUCLEOTIDYL-TRANSFERASE
• Organism(s): Escherichia coli K-12
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2000-07-27 Released: 2000-11-07 
• Deposition Author(s): Stevenson, C.E.M., Sargent, F., Buchanan, G., Palmer, T., Lawson, D.M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.35 Å
• R-Value Free: 0.213 
• R-Value Work: 0.184 

Literature

Crystal Structure of the Molybdenum Cofactor Biosynthesis Protein Moba from Escherichia Coli at Near Atomic Resolution

Stevenson, C.E.M., Sargent, F., Buchanan, G., Palmer, T., Lawson, D.M.

(2000) Structure 8: 1115

• PubMed: 11080634 
• DOI: https://doi.org/10.1016/s0969-2126(00)00518-9
• Primary Citation of Related Structures:  
  1E5K


• PubMed Abstract: 
  

All mononuclear molybdoenzymes bind molybdenum in a complex with an organic cofactor termed molybdopterin (MPT). In many bacteria, including Escherichia coli, molybdopterin can be further modified by attachment of a GMP group to the terminal phosphate of molybdopterin to form molybdopterin guanine dinucleotide (MGD). This modification reaction is required for the functioning of many bacterial molybdoenzymes, including the nitrate reductases, dimethylsulfoxide (DMSO) and trimethylamine-N-oxide (TMAO) reductases, and formate dehydrogenases. The GMP attachment step is catalyzed by the cellular enzyme MobA.

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Organizational Affiliation: 

Department of Biological Chemistry and John Innes Centre NR4 7UH, Norwich, United Kingdom.

Biological Assembly 1  

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

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

Macromolecule Content

• Total Structure Weight: 22.98 kDa 
• Atom Count: 1,599 
• Modelled Residue Count: 188 
• Deposited Residue Count: 201 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
MOLYBDOPTERIN-GUANINE DINUCLEOTIDE BIOSYNTHESIS PROTEIN A	A	201	Escherichia coli K-12	Mutation(s): 0  Gene Names: mobA, chlB, mob, narB, b3857, JW3829 EC: 2.7.7.77
UniProt
Find proteins for P32173 (Escherichia coli (strain K12)) Explore P32173  Go to UniProtKB:  P32173

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CIT	C [auth A], D [auth A]	CITRIC ACID C6 H8 O7 KRKNYBCHXYNGOX-UHFFFAOYSA-N
LI	B [auth A]	LITHIUM ION Li HBBGRARXTFLTSG-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.35 Å
• R-Value Free: 0.213 
• R-Value Work: 0.184 
• Space Group: P 2₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 76.574	α = 90
b = 41.758	β = 90
c = 54.528	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALA	data scaling
SOLVE	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2000-11-07 
Deposition Author(s): Stevenson, C.E.M., Sargent, F., Buchanan, G., Palmer, T., Lawson, D.M.

Revision History  

• Version 1.0: 2000-11-07
  Type: Initial release
  
• Version 1.1: 2011-05-08
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2019-04-03
  Changes: Data collection, Experimental preparation, Other
• Version 1.4: 2019-05-08
  Changes: Data collection, Experimental preparation