SPACI score report for 1nks in ASTRAL 1.61:

PDB Entry: 1nks
SPACI score: 0.33
AEROSPACI score: 0.33

Experiment type: XRAY
Resolution: 2.57
R-factor: 0.164
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 3
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: 1.161
WCK2 WHAT_CHECK Ramachandran: -1.499
WCK3 WHAT_CHECK Chi angles: -2.386
WCK4 WHAT_CHECK Backbone: 0.357

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).