SPACI score report for 2b59 in ASTRAL 1.75:

PDB Entry: 2b59
SPACI score: 0.5
AEROSPACI score: 0.5

Experiment type: XRAY
Resolution: 2.11
R-factor: 0.205
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -1.299
WCK2 WHAT_CHECK Ramachandran: -1.133
WCK3 WHAT_CHECK Chi angles: -0.756
WCK4 WHAT_CHECK Backbone: -0.238

Note: Here are links to pages about PROCHECK and WHAT_CHECK.

Here is the full WHAT_CHECK report on this protein (linked from the WHAT_CHECK site).