SPACI score report for 2bkc in ASTRAL 1.73:

PDB Entry: 2bkc
SPACI score: 0.37
AEROSPACI score: 0.37 (mutant; see below)

Experiment type: XRAY
Resolution: 2.3
R-factor: 0.21175
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 1
WCK1 WHAT_CHECK Packing: 2.76
WCK2 WHAT_CHECK Ramachandran: 0.095
WCK3 WHAT_CHECK Chi angles: -2.015
WCK4 WHAT_CHECK Backbone: 0.044

The AEROSPACI score for this entry is lower than the SPACI score because human-curated comments on the entry in SCOP 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).