SPACI score report for 1lks in ASTRAL 1.63:

PDB Entry: 1lks
SPACI score: 0.98
AEROSPACI score: 0.98

Experiment type: XRAY
Resolution: 1.1
R-factor: 0.0989
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 1
WCK1 WHAT_CHECK Packing: -0.318
WCK2 WHAT_CHECK Ramachandran: 0.352
WCK3 WHAT_CHECK Chi angles: 0.734
WCK4 WHAT_CHECK Backbone: -0.002

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).