SPACI score report for 2nqk in ASTRAL 1.75:

PDB Entry: 2nqk
SPACI score: 0.24
AEROSPACI score: 0.24 (mutant; see below)

Experiment type: XRAY
Resolution: 2.9
R-factor: 0.201
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 3
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -1.203
WCK2 WHAT_CHECK Ramachandran: -2.42
WCK3 WHAT_CHECK Chi angles: -4.731
WCK4 WHAT_CHECK Backbone: -0.634

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 d1g8la1; automatically matched to d1fc5a2; automatically matched to d1fc5a3; automated match to d1g8la2; automated match to d2nqra3; automated match to d2nqra1"

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).