SPACI score report for 2bkp in ASTRAL 1.75:

PDB Entry: 2bkp
SPACI score: 0.49
AEROSPACI score: 0.49

Experiment type: XRAY
Resolution: 2.2
R-factor: 0.225
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: 1.035
WCK2 WHAT_CHECK Ramachandran: -0.109
WCK3 WHAT_CHECK Chi angles: 0.323
WCK4 WHAT_CHECK Backbone: 1.088

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).