1ALQ

CIRCULARLY PERMUTED BETA-LACTAMASE FROM STAPHYLOCOCCUS AUREUS PC1

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3BLM	PDB ENTRY 3BLM

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		8		PROTEIN WAS CRYSTALLIZED FROM 70% SATURATED AMMONIUM SULFATE SOLUTION, 0.3M KCL, 100MM NAHCO3 AT PH8.0, 0.5% V/V PEG600

Crystal Properties
Matthews coefficient	Solvent content
2.96	57

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 53.9	α = 90
b = 94.2	β = 90
c = 138.3	γ = 90

Symmetry
Space Group	I 2 2 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	300	AREA DETECTOR	SIEMENS	COLLIMATOR	1996-10-21	M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RUH2R

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Net I Over Average Sigma (I)	Redundancy	Number Reflections (All)	Number Reflections (Observed)	Observed Criterion Sigma (F)	Observed Criterion Sigma (I)	B (Isotropic) From Wilson Plot
1	1.8	30	89	0.079	20.4	4.9		29813

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	1.8	1.91	66		0.408	1.8	2.2

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work (Depositor)	R-Free (Depositor)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	DIFFERENCE FOURIER	FREE R-VALUE	PDB ENTRY 3BLM	1.8	30	29777	2981	88.8	0.196	0.191		0.256	EVERY 10TH REFLECTION

Temperature Factor Modeling
Anisotropic B[1][1]	Anisotropic B[1][2]	Anisotropic B[1][3]	Anisotropic B[2][2]	Anisotropic B[2][3]	Anisotropic B[3][3]

Coordinate Error
Structure Solution Method	Refinement High Resolution	Refinement Low Resolution
	2122	2203.5

RMS Deviations
Key	Refinement Restraint Deviation
s_anti_bump_dis_restr	0.118
s_non_zero_chiral_vol	0.109
s_zero_chiral_vol	0.102
s_similar_adp_cmpnt	0.082
s_angle_d	0.04
s_from_restr_planes	0.034
s_bond_d	0.02
s_similar_dist
s_rigid_bond_adp_cmpnt
s_approx_iso_adps

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2033
Nucleic Acid Atoms
Solvent Atoms	212
Heterogen Atoms	9

Software

Software
Software Name	Purpose
SHELXL-97	model building
X-PLOR	model building
SHELXL-97	refinement
X-PLOR	refinement
XENGEN	data reduction
XENGEN	data scaling
SHELXL-97	phasing
X-PLOR	phasing

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), 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 R01GM157729.