SPACI score report for 2co3 in ASTRAL 2.08:

WARNING! The SPACI score for this entry is not valid. The R-factor is not available and an abitrary R-factor has been used. The PROCHECK parameters for this entry could not be obtained, and poor results have been arbitrarily assumed.

PDB Entry: 2co3
SPACI score: 0.37 (not valid)
AEROSPACI score: 0.37 (not valid) (mutant; see below)

Experiment type: XRAY
Resolution: 1.78
R-factor: 0.25
PCK1 PROCHECK Ramachandran: N/A
PCK2 PROCHECK Chi-1 angle: N/A
WCK1 WHAT_CHECK Packing: -1.118
WCK2 WHAT_CHECK Ramachandran: -0.552
WCK3 WHAT_CHECK Chi angles: -0.84
WCK4 WHAT_CHECK Backbone: 2.238

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: "forms swapped dimer through the extra N-terminal strand (included); mutant; automatically matched to 2CO3 A:10-142; automated match to d2co3a1"

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).