3FM2

CRYSTAL STRUCTURE OF A PUTATIVE HEME-BINDING PROTEIN (AVA_4353) FROM ANABAENA VARIABILIS ATCC 29413 AT 1.80 A RESOLUTION

• PDB DOI: https://doi.org/10.2210/pdb3FM2/pdb

• Classification: HEME-BINDING PROTEIN
• Organism(s): Trichormus variabilis ATCC 29413
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2008-12-19 Released: 2009-01-13 
• Deposition Author(s): Joint Center for Structural Genomics (JCSG)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.219 
• R-Value Work: 0.196 
• R-Value Observed: 0.197 

Literature

Crystal structure of uncharacterized protein, distantly related to a heme binding/degrading HemS (PF05171) family (YP_324846.1) from Anabaena variabilis ATCC 29413 at 1.80 A resolution

Joint Center for Structural Genomics (JCSG)

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: 31.44 kDa 
• Atom Count: 2,275 
• Modelled Residue Count: 266 
• Deposited Residue Count: 270 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Uncharacterized protein, distantly related to a heme binding/degrading HemS (PF05171) family	A, B	135	Trichormus variabilis ATCC 29413	Mutation(s): 0  Gene Names: Ava_4353, YP_324846.1
UniProt
Find proteins for Q3M4Y5 (Trichormus variabilis (strain ATCC 29413 / PCC 7937)) Explore Q3M4Y5  Go to UniProtKB:  Q3M4Y5

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ZN	C [auth A], F [auth B]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N
ACT	D [auth A], E [auth A], G [auth B]	ACETATE ION C2 H3 O2 QTBSBXVTEAMEQO-UHFFFAOYSA-M

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

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.219 
• R-Value Work: 0.196 
• R-Value Observed: 0.197 
• Space Group: P 2₁ 2₁ 2₁
• Diffraction Data: https://doi.org/10.18430/M33FM2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 51.23	α = 90
b = 61.75	β = 90
c = 84.51	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
PHENIX	refinement
SHELX	phasing
MolProbity	model building
XSCALE	data scaling
PDB_EXTRACT	data extraction
MAR345	data collection
XDS	data reduction
SHELXD	phasing
autoSHARP	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2009-01-13 
Deposition Author(s): Joint Center for Structural Genomics (JCSG)

Revision History  

• Version 1.0: 2009-01-13
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Advisory, Version format compliance
• Version 1.2: 2017-10-25
  Changes: Author supporting evidence, Refinement description
• Version 1.3: 2019-07-24
  Changes: Data collection, Derived calculations, Refinement description
• Version 1.4: 2023-02-01
  Changes: Database references, Derived calculations