7CLF

PigF with SAH

• PDB DOI: https://doi.org/10.2210/pdb7CLF/pdb

• Classification: TRANSFERASE
• Organism(s): Serratia marcescens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2020-07-20 Released: 2021-07-28 
• Deposition Author(s): Qiu, S., Xu, D., Han, N., Sun, B., Ran, T., Wang, W.
• Funding Organization(s): National Natural Science Foundation of China (NSFC)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.98 Å
• R-Value Free: 0.249 
• R-Value Work: 0.188 

Literature

Crystal structures of PigF, an O-methyltransferase involved in the prodigiosin synthetic pathway, reveal an induced-fit substrate-recognition mechanism.

Qiu, S., Xu, D., Xu, M., Zhou, H., Sun, N., Zhang, L., Zhao, M., He, J., Ran, T., Sun, B., Wang, W.

(2022) IUCrJ 9: 316-327

• DOI: https://doi.org/10.1107/S2052252521011696

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: 78.31 kDa 
• Atom Count: 5,644 
• Modelled Residue Count: 670 
• Deposited Residue Count: 692 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Methyltransferase domain-containing protein	A, B	346	Serratia marcescens	Mutation(s): 0  Gene Names: pigF, AR325_07835, E4655_02280, FOT62_11605
UniProt
Find proteins for Q5W249 (Serratia marcescens) Explore Q5W249  Go to UniProtKB:  Q5W249

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SAH (Subject of Investigation/LOI)	D [auth A], F [auth B]	S-ADENOSYL-L-HOMOCYSTEINE C14 H20 N6 O5 S ZJUKTBDSGOFHSH-WFMPWKQPSA-N
ACT (Subject of Investigation/LOI)	C [auth A], E [auth B]	ACETATE ION C2 H3 O2 QTBSBXVTEAMEQO-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.98 Å
• R-Value Free: 0.249 
• R-Value Work: 0.188 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 43.9	α = 90
b = 109.2	β = 93.1
c = 63.9	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
XDS	data reduction
XSCALE	data scaling
CRANK2	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2021-07-28 
Deposition Author(s): Qiu, S., Xu, D., Han, N., Sun, B., Ran, T., Wang, W.

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Funding Organization	Location	Grant Number
National Natural Science Foundation of China (NSFC)	China	31770074
National Natural Science Foundation of China (NSFC)	China	31770050

Revision History  

• Version 1.0: 2021-07-28
  Type: Initial release
  
• Version 1.1: 2022-03-16
  Changes: Database references
• Version 1.2: 2024-05-29
  Changes: Data collection, Derived calculations