8KC6 | pdb_00008kc6

X-ray structure of 3-alpha-(Or 20-beta)-hydroxysteroid dehydrogenase

• PDB DOI: https://doi.org/10.2210/pdb8KC6/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Lentilactobacillus kefiri
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2023-08-06 Released: 2023-08-30 
• Deposition Author(s): Song, S.K., Lv, D.Q., Cheng, X.Y., Ma, Q.Q., Hu, Y.L., Su, Z.D.
• Funding Organization(s): Not funded

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.20 Å
• R-Value Free: 
  0.179 (Depositor), 0.190 (DCC) 
• R-Value Work: 
  0.166 (Depositor), 0.180 (DCC) 
• R-Value Observed: 
  0.167 (Depositor) 

Starting Model: in silico

Literature

X-ray structure of 3-alpha-(Or 20-beta)-hydroxysteroid dehydrogenase

Song, S.K., Su, Z.D.

To be published.

Biological Assembly 1  

Global Symmetry: Dihedral - D2  (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4 

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

Macromolecule Content 

• Total Structure Weight: 25.83 kDa 
• Atom Count: 1,990 
• Modeled Residue Count: 250 
• Deposited Residue Count: 250 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
3-alpha-(Or 20-beta)-hydroxysteroid dehydrogenase	A	250	Lentilactobacillus kefiri	Mutation(s): 0

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.20 Å
• R-Value Free:  0.179 (Depositor), 0.190 (DCC) 
• R-Value Work:  0.166 (Depositor), 0.180 (DCC) 
• R-Value Observed: 0.167 (Depositor) 

Space Group: I 2 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 55.496	α = 90
b = 79.538	β = 90
c = 114.365	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
HKL-2000	data scaling
HKL-2000	data reduction
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2023-08-30 
Deposition Author(s): Song, S.K., Lv, D.Q., Cheng, X.Y., Ma, Q.Q., Hu, Y.L., Su, Z.D.

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Funding Organization	Location	Grant Number
Not funded		--

Revision History  

• Version 1.0: 2023-08-30
  Type: Initial release