3CPA | pdb_00003cpa

X-RAY CRYSTALLOGRAPHIC INVESTIGATION OF SUBSTRATE BINDING TO CARBOXYPEPTIDASE A AT SUBZERO TEMPERATURE

X-RAY DIFFRACTION

---

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1				THE COMPLEX WAS PREPARED BY DIFFUSION OF GLY-TYR INTO CPA CRYSTALS. THE OCCUPANCY OF THE GLY-TYR IS APPROXIMATELY FORTY PERCENT.

Crystal Properties
Matthews coefficient	Solvent content
2.1	41.45

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 51.6	α = 90
b = 60.27	β = 97.27
c = 47.25	γ = 90

Symmetry
Space Group	P 1 21 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work (Depositor)	R-Free (Depositor)	Mean Isotropic B
X-RAY DIFFRACTION		2

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]

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2437
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	18

Software

Software
Software Name	Purpose
PROLSQ	refinement