2PH5

Crystal structure of the homospermidine synthase hss from Legionella pneumophila in complex with NAD, Northeast Structural Genomics Target LgR54

• PDB DOI: https://doi.org/10.2210/pdb2PH5/pdb

• Classification: TRANSFERASE
• Organism(s): Legionella pneumophila subsp. pneumophila str. Philadelphia 1
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2007-04-10 Released: 2007-05-15 
• Deposition Author(s): Forouhar, F., Hussain, M., Seetharaman, J., Fang, Y., Janjua, H., Xiao, R., Cunningham, K., Ma, L.-C., Owens, L., Liu, J., Baran, M.C., Acton, T.B., Montelione, G.T., Hunt, J.F., Tong, L., Northeast Structural Genomics Consortium (NESG)

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Free: 0.261 
• R-Value Work: 0.202 
• R-Value Observed: 0.202 

Literature

Crystal structure of the homospermidine synthase hss from Legionella pneumophila in complex with NAD.

Forouhar, F., Hussain, M., Seetharaman, J., Fang, Y., Janjua, H., Xiao, R., Cunningham, K., Ma, L.-C., Owens, L., Liu, J., Baran, M.C., Acton, T.B., Montelione, G.T., Hunt, J.F., Tong, L.

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,PQS (software)

Macromolecule Content

• Total Structure Weight: 55.19 kDa 
• Atom Count: 3,856 
• Modelled Residue Count: 459 
• Deposited Residue Count: 480 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Homospermidine synthase	A	480	Legionella pneumophila subsp. pneumophila str. Philadelphia 1	Mutation(s): 8  Gene Names: hss, lpg2495 EC: 2.5.1.44
UniProt
Find proteins for Q5ZSM2 (Legionella pneumophila subsp. pneumophila (strain Philadelphia 1 / ATCC 33152 / DSM 7513)) Explore Q5ZSM2  Go to UniProtKB:  Q5ZSM2

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NAD	C [auth A]	NICOTINAMIDE-ADENINE-DINUCLEOTIDE C21 H27 N7 O14 P2 BAWFJGJZGIEFAR-NNYOXOHSSA-N
SO4	B [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Free: 0.261 
• R-Value Work: 0.202 
• R-Value Observed: 0.202 
• Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 95.848	α = 90
b = 146.902	β = 90
c = 85.685	γ = 90

Software Package:

Software Name	Purpose
CNS	refinement
ADSC	data collection
HKL-2000	data reduction
HKL-2000	data scaling
SnB	phasing
SOLVE	phasing
RESOLVE	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2007-05-15 
Deposition Author(s): Forouhar, F., Hussain, M., Seetharaman, J., Fang, Y., Janjua, H., Xiao, R., Cunningham, K., Ma, L.-C., Owens, L., Liu, J., Baran, M.C., Acton, T.B., Montelione, G.T., Hunt, J.F., Tong, L., Northeast Structural Genomics Consortium (NESG)

Revision History  

• Version 1.0: 2007-05-15
  Type: Initial release
  
• Version 1.1: 2008-05-01
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Derived calculations, Version format compliance
• Version 1.3: 2017-10-18
  Changes: Refinement description
• Version 1.4: 2018-01-24
  Changes: Database references, Structure summary