3CTT | pdb_00003ctt

Crystal complex of N-terminal Human Maltase-Glucoamylase with Casuarine

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2QMJ	PDB entry 2QMJ

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	293	20% PEG 3350, 0.2M sodium sulfate, 4% 1,1,1,3,3,3-hexafluoro-2-propanol, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.63	53.15

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 86.692	α = 90
b = 109.131	β = 90
c = 109.438	γ = 90

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	CCD	ADSC QUANTUM 4		2007-05-19	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	CHESS BEAMLINE F1	0.9175	CHESS	F1

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	2.1	20	95.6	0.118	11.9	6.3		58131

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	2.1	2.15	97.4		0.432	4.96	5.5	3891

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	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	MOLECULAR REPLACEMENT	THROUGHOUT	PDB entry 2QMJ	2.1	15.65	57768	2932	94.59	0.228	0.225	0.2156	0.278	0.2733	RANDOM	22.542

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]
0.06			-0.02		-0.03

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.313
r_dihedral_angle_4_deg	17.846
r_dihedral_angle_3_deg	14.431
r_dihedral_angle_1_deg	6.843
r_scangle_it	3.275
r_scbond_it	2.224
r_angle_refined_deg	1.527
r_mcangle_it	1.413
r_mcbond_it	0.866
r_nbtor_refined	0.313
r_symmetry_vdw_refined	0.214
r_nbd_refined	0.213
r_xyhbond_nbd_refined	0.164
r_symmetry_hbond_refined	0.133
r_chiral_restr	0.106
r_bond_refined_d	0.014
r_gen_planes_refined	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6905
Nucleic Acid Atoms
Solvent Atoms	352
Heterogen Atoms	101

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
PHASER	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
HKL-2000	data collection