SPACI score report for 2bkc in ASTRAL 2.07:

PDB Entry: 2bkc
SPACI score: 0.36
AEROSPACI score: 0.36 (mutant; see below)

Experiment type: XRAY
Resolution: 2.3
R-factor: 0.212
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 1
WCK1 WHAT_CHECK Packing: 0.985
WCK2 WHAT_CHECK Ramachandran: -0.524
WCK3 WHAT_CHECK Chi angles: -2.843
WCK4 WHAT_CHECK Backbone: 1.745

The AEROSPACI score for this entry is lower than the SPACI score because human-curated comments on the entry in SCOPe contain the phrase mutant. The full comment is: "mutant; automatically matched to 2BKC A:7-156; automated match to d1qgha_"

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).