3QNZ

Orthorhombic form of IgG1 Fab fragment (in complex with antigenic tubulin peptide) sharing same Fv as IgA

Experimental procedure

Experimental method	SINGLE WAVELENGTH
Source type	ROTATING ANODE
Source details	RIGAKU MICROMAX-007 HF
Temperature [K]	108
Detector technology	IMAGE PLATE
Collection date	2009-12-14
Detector	MAR scanner 345 mm plate
Wavelength(s)	1.5418
Spacegroup name	P 21 21 21
Unit cell lengths	53.370, 66.450, 137.680
Unit cell angles	90.00, 90.00, 90.00

Refinement procedure

Resolution	28.210 - 2.200
R-factor	0.1982
Rwork	0.196
R-free	0.23510
Structure solution method	MOLECULAR REPLACEMENT
Starting model (for MR)	3qo0
RMSD bond length	0.009
RMSD bond angle	1.220
Data reduction software	XDS
Data scaling software	SCALA (3.3.9)
Phasing software	AMoRE
Refinement software	BUSTER-TNT

Data quality characteristics

	Overall	Inner shell	Outer shell
Low resolution limit [Å]	68.840	28.206	2.320
High resolution limit [Å]	2.200	6.960	2.200
Rmerge		0.021	0.493
Rmeas		0.025	0.586
Rpim		0.014	0.312
Total number of observations		2840	12593
Number of reflections	25641
<I/σ(I)>	14	42.2	2.6
Completeness [%]	99.9	98.2	100
Redundancy	3.4	3.2	3.4

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	VAPOR DIFFUSION, SITTING DROP	5.5	293	0.1M Na citrate, 20% isopropanol, 16% PEG 4000, pH 5.5, vapor diffusion, sitting drop, temperature 293K