SPACI score report for 2b8k in ASTRAL 2.08:

PDB Entry: 2b8k
SPACI score: -0.08
AEROSPACI score: -0.08

Experiment type: XRAY
Resolution: 4.15
R-factor: 0.387
PCK1 PROCHECK Ramachandran: 2
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 3
WCK1 WHAT_CHECK Packing: -2.962
WCK2 WHAT_CHECK Ramachandran: -6.332
WCK3 WHAT_CHECK Chi angles: -3.857
WCK4 WHAT_CHECK Backbone: 0.639

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).