SPACI score report for 1k5c in ASTRAL 2.06:

PDB Entry: 1k5c
SPACI score: 1.07
AEROSPACI score: 1.07

Experiment type: XRAY
Resolution: 0.96
R-factor: 0.114
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: 0.812
WCK2 WHAT_CHECK Ramachandran: -1.899
WCK3 WHAT_CHECK Chi angles: 0.046
WCK4 WHAT_CHECK Backbone: -0.778

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).