SPACI score report for 1nby in ASTRAL 1.71:

PDB Entry: 1nby
SPACI score: 0.48
AEROSPACI score: 0.48 (mutant; see below)

Experiment type: XRAY
Resolution: 1.8
R-factor: 0.216
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: 1.666
WCK2 WHAT_CHECK Ramachandran: 0.076
WCK3 WHAT_CHECK Chi angles: -1.229
WCK4 WHAT_CHECK Backbone: -4.558

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: "part of anti-lysozyme Fab HYHEL-63; mutant; complexed with HYHEL-63"

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).