4ODJ

Crystal structure of a putative S-adenosylmethionine synthetase from Cryptosporidium hominis in complex with S-adenosyl-methionine

• PDB DOI: https://doi.org/10.2210/pdb4ODJ/pdb

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


• Deposited: 2014-01-10 Released: 2014-03-05 
• Deposition Author(s): Seattle Structural Genomics Center for Infectious Disease (SSGCID), Seattle Structural Genomics Center for Infectious Disease (SSGCID)

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.60 Å
• R-Value Free: 0.165 
• R-Value Work: 0.144 
• R-Value Observed: 0.146 

Starting Model: experimental

Literature

Crystal structure of a putative S-adenosylmethionine synthetase from Cryptosporidium hominis in complex with S-adenosyl-methionine

Seattle Structural Genomics Center for Infectious Disease (SSGCID), Abendroth, J., Arakaki, T., Lorimer, D., Edewars, T.E.

To be published.

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)

Macromolecule Content

• Total Structure Weight: 46.66 kDa 
• Atom Count: 3,382 
• Modelled Residue Count: 386 
• Deposited Residue Count: 414 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
S-adenosylmethionine synthase	A	414	Cryptosporidium hominis	Mutation(s): 0  Gene Names: Chro.70301 EC: 2.5.1.6

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SAM	B [auth A]	S-ADENOSYLMETHIONINE C15 H22 N6 O5 S MEFKEPWMEQBLKI-FCKMPRQPSA-N
3PO	C [auth A]	TRIPHOSPHATE H5 O10 P3 UNXRWKVEANCORM-UHFFFAOYSA-N
MG	D [auth A], E [auth A]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.60 Å
• R-Value Free: 0.165 
• R-Value Work: 0.144 
• R-Value Observed: 0.146 
• Space Group: P 3₂ 2 1
• Diffraction Data: https://doi.org/10.18430/M34ODJ

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 117.86	α = 90
b = 117.86	β = 90
c = 54.04	γ = 120

Software Package:

Software Name	Purpose
XSCALE	data scaling
PHASER	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
XDS	data reduction

Structure Validation

Entry History 

Deposition Data

• Released Date: 2014-03-05 
Deposition Author(s): Seattle Structural Genomics Center for Infectious Disease (SSGCID), Seattle Structural Genomics Center for Infectious Disease (SSGCID)

Revision History  

• Version 1.0: 2014-03-05
  Type: Initial release
  
• Version 1.1: 2017-11-22
  Changes: Refinement description
• Version 1.2: 2018-01-24
  Changes: Structure summary
• Version 1.3: 2023-09-20
  Changes: Data collection, Database references, Derived calculations, Refinement description