Crystal structure of unliganded Fab 399

entry_id	12fe
deposition_date	2026-04-01
last_revision	2026-05-27
title	Crystal structure of unliganded Fab 399
keywords	Antibody, Malaria, IMMUNE SYSTEM; IMMUNE SYSTEM
method	X-RAY DIFFRACTION

rg_guinier	38.60 Å
rg_electron	38.77 Å
i0	133197000.00
molecular_weight	93228.0 kDa
excluded_volume	116740 ų
envelope_volume	160850 ų
shell_volume	36597 ų
envelope_diameter	138.2 Å
shell_rg	41.60 Å
envelope_rg	38.16 Å
shape_rg	38.74 Å
total_rg	39.07 Å
total_atoms	6571
n_residues	840
n_harmonics	20
q_range	— – 0.5000 Å−1
n_points	101
shell_type	directional
solvent_density	0.3340 e/ų
contrast_shell	0.0300 e/ų
crysol_version	4.1.3

dmax	129.9 Å
rg_real	38.99 Å
rg_real_error	1.17 Å
i0_real	1.3320e+08
i0_real_error	2.0730e+06
rg_reciprocal	38.75 Å
i0_reciprocal	133200000.0000
total_estimate	0.8372
solution_quality	GOOD a GOOD solution
n_peaks	2
r_peak_primary	34.8 Å
skewness	0.458
kurtosis	-0.513
angular_range	— – 0.2050 Å−1
current_alpha	0.0000
highest_alpha	10710000.0000
n_real_points	42
gnom_version	4.1.3
quality_criteria	AN1: 0.000; Oscil: 0.793; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.787; Smooth: 0.712

Unit Cell

length_a	63.900 Å
length_b	86.934 Å
length_c	89.765 Å
angle_alpha	90.00 °
angle_beta	100.85 °
angle_gamma	90.00 °
z_pdb	4

Symmetry

space_group	P 1 21 1
int_tables_number	4
crystal_system	—

Refinement

resolution	2.290 Å
resolution_low	39.320 Å
r_factor	0.2436
r_work	0.2418
r_free	0.2795

Diffraction

temperature

100.0 K

Files (7)

• pr_distribution /app/data/pr_computation/2f/12fe/pr_distribution.json
• pr_output /app/data/pr_computation/2f/12fe/12fe.pr.out
• pr_plot /app/data/visualization/pr_computation/2f/12fe/12fe_pr_distribution.png
• saxs_curve_dat /app/data/saxs_computation/2f/12fe/12fe.dat
• saxs_fit /app/data/saxs_computation/2f/12fe/12fe.fit
• saxs_log /app/data/saxs_computation/2f/12fe/12fe.log
• saxs_plot /app/data/visualization/saxs_computation/2f/12fe/12fe_saxs_profile.png

Curves (3)

fit	/app/data/saxs_computation/2f/12fe/12fe.fit
pddf	/app/data/pr_computation/2f/12fe/12fe.pr.out
profile	/app/data/saxs_computation/2f/12fe/12fe.dat