SPACI score report for 2j4z in ASTRAL 1.73:

PDB Entry: 2j4z
SPACI score: 0.43
AEROSPACI score: 0.43

Experiment type: XRAY
Resolution: 2
R-factor: 0.214
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: 0.69
WCK2 WHAT_CHECK Ramachandran: -0.538
WCK3 WHAT_CHECK Chi angles: 0.251
WCK4 WHAT_CHECK Backbone: -2.465

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).