SPACI score report for 1nrc in ASTRAL 2.07:

WARNING! The SPACI score for this entry is not valid. The WHAT_CHECK parameters for this entry could not be obtained, and poor results have been arbitrarily assumed.

PDB Entry: 1nrc
SPACI score: 0.19 (not valid)
AEROSPACI score: 0.19 (not valid) (mutant; see below)

Experiment type: XRAY
Resolution: 2.8
R-factor: 0.22
PCK1 PROCHECK Ramachandran: 4
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 1
WCK1 WHAT_CHECK Packing: N/A
WCK2 WHAT_CHECK Ramachandran: N/A
WCK3 WHAT_CHECK Chi angles: N/A
WCK4 WHAT_CHECK Backbone: N/A

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: "CA-atoms only, mutant protein sequence, domain 1; automated match to d1dz5a_"

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).