1TPY

Structure of the cyclopropane synthase MmaA2 from Mycobacterium tuberculosis

• PDB DOI: https://doi.org/10.2210/pdb1TPY/pdb

• Classification: TRANSFERASE
• Organism(s): Mycobacterium tuberculosis
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2004-06-16 Released: 2004-10-19 
• Deposition Author(s): Smith, C.V., Sacchettini, J.C.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.232 
• R-Value Work: 0.194 
• R-Value Observed: 0.198 

Starting Model: experimental

Literature

Structure of the cyclopropane synthase MmaA2 from Mycobacterium tuberculosis

Smith, C.V., Sacchettini, J.C.

To be published.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 33.49 kDa 
• Atom Count: 2,534 
• Modelled Residue Count: 285 
• Deposited Residue Count: 287 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
methoxy mycolic acid synthase 2	A	287	Mycobacterium tuberculosis	Mutation(s): 0  Gene Names: mmaA2 EC: 2.1.1.79
UniProt
Find proteins for Q79FX6 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)) Explore Q79FX6  Go to UniProtKB:  Q79FX6

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SAH	C [auth A]	S-ADENOSYL-L-HOMOCYSTEINE C14 H20 N6 O5 S ZJUKTBDSGOFHSH-WFMPWKQPSA-N
16A	D [auth A]	CETYL-TRIMETHYL-AMMONIUM C19 H42 N RLGQACBPNDBWTB-UHFFFAOYSA-N
CO3	B [auth A]	CARBONATE ION C O3 BVKZGUZCCUSVTD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.232 
• R-Value Work: 0.194 
• R-Value Observed: 0.198 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 42.587	α = 90
b = 58.42	β = 90
c = 133.683	γ = 90

Software Package:

Software Name	Purpose
HKL-2000	data collection
SCALEPACK	data scaling
AMoRE	phasing
CNS	refinement
HKL-2000	data reduction

Structure Validation

Entry History 

Deposition Data

• Released Date: 2004-10-19 
Deposition Author(s): Smith, C.V., Sacchettini, J.C.

Revision History  

• Version 1.0: 2004-10-19
  Type: Initial release
  
• Version 1.1: 2008-04-30
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2023-08-23
  Changes: Data collection, Database references, Derived calculations, Refinement description