2FHF | pdb_00002fhf

Crystal Structure Analysis of Klebsiella pneumoniae pullulanase complexed with maltotetraose

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6	293	Crystallization details15-25% polyethyleneglycol 6000 in 0.2 M magnesium acetate and 0.2 M sodium acetate buffer. The crystal was soaked with 300 mM maltotetraose for 30 min at 20 deg.C, followed by flash-freezing in a nitrogen gas stream at 100 K without any cryo-protectant., pH 6.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.42	49.18

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 150.159	α = 90
b = 60.509	β = 111.87
c = 134.664	γ = 90

Symmetry
Space Group	C 1 2 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	IMAGE PLATE	RIGAKU RAXIS V		2000-12-10	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SPRING-8 BEAMLINE BL24XU	0.836	SPring-8	BL24XU

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	1.6	15	83.9	0.077	18.2	2.76	149159	125174		1	20.5

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)
	1.6	1.65	72.2		0.27	3.9	2.34	9411

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MIR	THROUGHOUT	1.65	14.98	115604	11574	85.7	0.178	0.178	0.19	0.206	0.21	RANDOM	27.5

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]
-4.56		0.73	4.61		-0.05

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	23.5
c_scangle_it	2.31
c_scbond_it	1.67
c_mcangle_it	1.52
c_angle_deg	1.3
c_mcbond_it	1.02
c_improper_angle_d	0.73
c_bond_d	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	8126
Nucleic Acid Atoms
Solvent Atoms	1197
Heterogen Atoms	118

Software

Software
Software Name	Purpose
CNS	refinement
PHASES	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.