7LDA | pdb_00007lda

Crystal structure of a ribose-5-phosphate isomerase from Stenotrophomonas maltophilia K279a

• PDB DOI: https://doi.org/10.2210/pdb7LDA/pdb

• Classification: ISOMERASE
• Organism(s): Stenotrophomonas maltophilia K279a
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2021-01-13 Released: 2021-01-20 
• Deposition Author(s): Seattle Structural Genomics Center for Infectious Disease (SSGCID)

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.45 Å
• R-Value Free: 
  0.163 (Depositor), 0.175 (DCC) 
• R-Value Work: 
  0.149 (Depositor) 
• R-Value Observed: 
  0.149 (Depositor) 

Starting Model: experimental

Literature

Crystal structure of a ribose-5-phosphate isomerase from Stenotrophomonas maltophilia K279a

Edwards, T.E., Horanyi, P.S., Lorimer, D.D., Seattle Structural Genomics Center for Infectious Disease

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)

Biological Assembly Evidence: gel filtration

Macromolecule Content 

• Total Structure Weight: 49.46 kDa 
• Atom Count: 4,142 
• Modeled Residue Count: 431 
• Deposited Residue Count: 446 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Ribose-5-phosphate isomerase A	A, B	223	Stenotrophomonas maltophilia K279a	Mutation(s): 0  Gene Names: rpiA, Smlt3868 EC: 5.3.1.6
UniProt
Find proteins for B2FT30 (Stenotrophomonas maltophilia (strain K279a)) Explore B2FT30  Go to UniProtKB:  B2FT30

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	D [auth A], E [auth A], H [auth A], K [auth B], L [auth B]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
EDO	C [auth A], F [auth A], G [auth A], I [auth B], J [auth B]	1,2-ETHANEDIOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.45 Å
• R-Value Free:  0.163 (Depositor), 0.175 (DCC) 
• R-Value Work:  0.149 (Depositor) 
• R-Value Observed: 0.149 (Depositor) 

Space Group: P 4₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 97.41	α = 90
b = 97.41	β = 90
c = 129.28	γ = 90

Software Package:

Software Name	Purpose
XDS	data reduction
XSCALE	data scaling
MOLREP	phasing
PHENIX	refinement
PDB_EXTRACT	data extraction

Structure Validation

Entry History 

Deposition Data

• Released Date: 2021-01-20 
Deposition Author(s): Seattle Structural Genomics Center for Infectious Disease (SSGCID)

Revision History  

• Version 1.0: 2021-01-20
  Type: Initial release
  
• Version 1.1: 2023-10-18
  Changes: Data collection, Database references, Refinement description
• Version 1.2: 2025-10-22
  Changes: Structure summary