Experiment: 39PC

Crystal structure of a septum formation protein Maf from Coccidioides immitis (sulfate complex)

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
in silico model	AlphaFold	AF-J3KAP5-F1

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	8.5	291	Morpheus Fusion D6: 20% (v/v) PEG 500 MME; 10 % (w/v) PEG 20000; 0.05M Tris (base); 0.05M BICINE pH 8.5; 0.02 M xylitol, 0.02 M D-(−)-fructose, 0.02 M D-sorbitol, 0.02 M myo-inositol, 0.02 M L-rhamnose monohydrate; 0.03 M Lithium sulfate, 0.03 M Sodium sulfate, 0.03 M Potassium sulfate , CoimA.00961.a.A2.PW39528 at 13.2 mg/mL. plate 21394 D6, Puck: PSL-0105, Cryo: direct.

Crystal Properties
Matthews coefficient	Solvent content
4.75	74.08

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 76.869	α = 90
b = 76.869	β = 90
c = 176.008	γ = 90

Symmetry
Space Group	P 43 21 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	PIXEL	DECTRIS EIGER2 XE 9M		2026-09-26	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS-II BEAMLINE 19-ID	0.9786	NSLS-II	19-ID

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim I (All)	CC (Half)	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	2.46	46.64	100	0.115	0.117	0.023	1	21.5	25.9		19993

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.46	2.56		100	2.273	2.317	0.448	0.879		26.5

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	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)	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	2.46	46.64	1.35	19890	1029	99.8	0.2221	0.2207	0.2218	0.2468	0.2458

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]

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	18.467
f_angle_d	0.806
f_chiral_restr	0.048
f_bond_d	0.008
f_plane_restr	0.007

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1708
Nucleic Acid Atoms
Solvent Atoms	11
Heterogen Atoms	17

Software

Software
Software Name	Purpose
PHENIX	refinement
Aimless	data scaling
XDS	data reduction
PHASER	phasing
PDB_EXTRACT	data extraction