4PXG

Crystal Structure of TypeII restriction Enzyme Sau3AI

PDB DOI: https://doi.org/10.2210/pdb4PXG/pdb

Classification: HYDROLASE
Organism(s): Staphylococcus aureus
Expression System: Escherichia coli
Mutation(s): Yes

Deposited: 2014-03-24 Released: 2015-03-25
Deposition Author(s): Xu, C.Y., Yu, F., Hu, X.J., He, J.H.

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 2.45 Å
R-Value Free: 0.263
R-Value Work: 0.224
R-Value Observed: 0.226

wwPDB Validation 3D Report Full Report

This is version 1.0 of the entry. See complete history.

Literature

The 2.45 A Crystal Structure of the Restriction Endonuclease Sau3AI Suggests a Self-Inhibition Mechanism

Xu, C.Y., Yu, F., Hu, X.J., He, J.H.

To be published.

Macromolecule Content

Total Structure Weight: 118.22 kDa
Atom Count: 7,640
Modelled Residue Count: 931
Deposited Residue Count: 1,018
Unique protein chains: 1

Macromolecules

Find similar proteins by:

(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Type-2 restriction enzyme Sau3AI	A, B	509	Staphylococcus aureus	Mutation(s): 1 Gene Names: sau3AIR EC: 3.1.21.4
UniProt
Find proteins for P16667 (Staphylococcus aureus) Explore P16667 Go to UniProtKB: P16667
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	P16667
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
CA Query on CA Download Ideal Coordinates CCD File SDF format, chain C [auth A] MOL2 format, chain C [auth A]	C [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N		Interactions Focus chain C [auth A] Interactions & Density Focus chain C [auth A]

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

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 2.45 Å
R-Value Free: 0.263
R-Value Work: 0.224
R-Value Observed: 0.226
Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 69.648	α = 90
b = 197.673	β = 90
c = 191.145	γ = 90

Software Package:

Software Name	Purpose
HKL-2000	data collection
SOLVE	phasing
REFMAC	refinement
XDS	data reduction
XDS	data scaling

Structure Validation

View Full Validation Report

Entry History

Deposition Data

Released Date: 2015-03-25

Deposition Author(s):

Revision History (Full details and data files)

Version 1.0: 2015-03-25
Type: Initial release

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.