← Back to search

12ss

Crystal Structure of Superoxide dismutase from Cryptosporidium parvum

Method: X-RAY DIFFRACTION D_max: 111.6 Å Quality: GOOD

SAXS Profile

P(r) Distribution

▼

1. Structure Basics

entry_id	12ss
deposition_date	2026-04-16
last_revision	2026-04-29
title	Crystal Structure of Superoxide dismutase from Cryptosporidium parvum
keywords	;SSGCID, STRUCTURAL GENOMICS, SEATTLE STRUCTURAL GENOMICS CENTER FOR INFECTIOUS DISEASE, Superoxide dismutase, Cryptosporidium parvum, OXIDOREDUCTASE ;; OXIDOREDUCTASE
method	X-RAY DIFFRACTION

▼

Download Data

SAXS curve (.dat) P(r) distribution (.pr.out) Structure (CIF)

▼

2. SAXS Parameters (CRYSOL)

rg_guinier	36.90 Å
rg_electron	36.37 Å
i0	256444000.00
molecular_weight	132290.0 kDa
excluded_volume	165980 Å³
envelope_volume	212350 Å³
shell_volume	48135 Å³
envelope_diameter	112.2 Å
shell_rg	43.22 Å
envelope_rg	35.59 Å
shape_rg	36.33 Å
total_rg	36.92 Å
total_atoms	9369
n_residues	1173
n_harmonics	20
q_range	— – 0.5000 Å⁻¹
n_points	101
shell_type	directional
solvent_density	0.3340 e/Å³
contrast_shell	0.0300 e/Å³
crysol_version	4.1.3

▼

3. P(r) Analysis (GNOM)

dmax	111.6 Å
rg_real	36.69 Å
rg_real_error	0.70 Å
i0_real	2.5640e+08
i0_real_error	4.0000e+06
rg_reciprocal	36.82 Å
i0_reciprocal	256500000.0000
total_estimate	0.8401
solution_quality	GOOD a GOOD solution
n_peaks	1
r_peak_primary	49.3 Å
skewness	0.029
kurtosis	-0.704
angular_range	— – 0.2150 Å⁻¹
current_alpha	0.0000
highest_alpha	22610000.0000
n_real_points	44
gnom_version	4.1.3
quality_criteria	AN1: 0.000; Oscil: 0.973; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.999; Smooth: 0.000

▶

4. Crystallography & Experiment

▶

5. Entities & Polymer Info (5)

Entity 1 polymer

description	Superoxide dismutase
formula_weight	23549.3 kDa
src_method	man
entity_count	6

Polymer

type	polypeptide(L)
strand_id	A,B,C,D,E,F
atom_count	9621

MAHHHHHHPFELPPLPYDKKALEPVISPETLDYHYGKHHAGYVTKLNSLIKSTEFENETDLMKVIMKSSGPIYNNASQIWNHTFYWSCLRSPSETNKPTSKVSKLIEESFGSFESFKESFTANATGHFGSGWIWVVIDPINNQKLKIVQTHDGDNPEKLGLGKPVLTCDVWEHAYYIDYRNNRGSYVDQFFSIINWDFVESNLS

Source

organism	Cryptosporidium parvum Iowa II
ncbi_taxonomy_id	353152
host_organism	Escherichia coli BL21(DE3)

Entity 2 non-polymer

description	MANGANESE (II) ION
formula_weight	54.9 kDa
src_method	syn
entity_count	6

Entity 3 non-polymer

description	1,2-ETHANEDIOL
formula_weight	62.1 kDa
src_method	syn
entity_count	1

Entity 4 non-polymer

description	DI(HYDROXYETHYL)ETHER
formula_weight	106.1 kDa
src_method	syn
entity_count	1

Entity 5 water

description	water
formula_weight	18.0 kDa
src_method	nat
entity_count	243

▶

6. Citations (1)

▶

length_a	92.805 Å
length_b	92.805 Å
length_c	125.765 Å
angle_alpha	90.00 °
angle_beta	90.00 °
angle_gamma	120.00 °
z_pdb	18

space_group	P 31
int_tables_number	144
crystal_system	—

resolution	2.010 Å
resolution_low	46.400 Å
r_factor	0.1562
r_work	0.1486
r_free	0.1965

fit	/app/data/saxs_computation/2s/12ss/12ss.fit
pddf	/app/data/pr_computation/2s/12ss/12ss.pr.out
profile	/app/data/saxs_computation/2s/12ss/12ss.dat