2G3T

Crystal structure of human spermidine/spermine N1-acetyltransferase (hSSAT)

• PDB DOI: https://doi.org/10.2210/pdb2G3T/pdb

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


• Deposited: 2006-02-21 Released: 2006-03-07 
• Deposition Author(s): Zhu, Y.Q., Yang, N., Wang, D.C.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.260 
• R-Value Work: 0.227 
• R-Value Observed: 0.227 

Literature

Crystal structure of human spermidine/spermine N1-acetyltransferase (hSSAT): the first structure of a new sequence family of transferase homologous superfamily

Zhu, Y.Q., Zhu, D.Y., Yin, L., Zhang, Y., Vonrhein, C., Wang, D.C.

(2006) Proteins 63: 1127-1131

• PubMed: 16544326 
• DOI: https://doi.org/10.1002/prot.20965
• Primary Citation of Related Structures:  
  2F5I, 2G3T

---

Organizational Affiliation: 

National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, People's Republic of China.

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 2  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 42.24 kDa 
• Atom Count: 3,102 
• Modelled Residue Count: 337 
• Deposited Residue Count: 358 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Diamine acetyltransferase 1	A, B	179	Homo sapiens	Mutation(s): 0  EC: 2.3.1.57
UniProt & NIH Common Fund Data Resources
Find proteins for P21673 (Homo sapiens) Explore P21673  Go to UniProtKB:  P21673
PHAROS:  P21673 GTEx:  ENSG00000130066

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.260 
• R-Value Work: 0.227 
• R-Value Observed: 0.227 
• Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 65.43	α = 90
b = 65.666	β = 90
c = 181.065	γ = 90

Software Package:

Software Name	Purpose
HKL-2000	data collection
SCALEPACK	data scaling
OASIS	model building
CNS	refinement
HKL-2000	data reduction
OASIS	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2006-03-07 
Deposition Author(s): Zhu, Y.Q., Yang, N., Wang, D.C.

Revision History  

• Version 1.0: 2006-03-07
  Type: Initial release
  
• Version 1.1: 2008-03-17
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2017-10-18
  Changes: Refinement description
• Version 1.4: 2019-01-23
  Changes: Data collection, Structure summary
• Version 1.5: 2024-03-13
  Changes: Data collection, Database references