SPACI score report for 4j2v in ASTRAL 2.04:

PDB Entry: 4j2v
SPACI score: 0.4
AEROSPACI score: 0.4

Experiment type: XRAY
Resolution: 2.12
R-factor: 0.183
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 3
WCK1 WHAT_CHECK Packing: -0.012
WCK2 WHAT_CHECK Ramachandran: -1.371
WCK3 WHAT_CHECK Chi angles: -2.632
WCK4 WHAT_CHECK Backbone: 4.403

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).