SPACI score report for 2ja6 in ASTRAL 2.06:

PDB Entry: 2ja6
SPACI score: 0.02
AEROSPACI score: 0.02

Experiment type: XRAY
Resolution: 4
R-factor: 0.2923
PCK1 PROCHECK Ramachandran: 2
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 3
WCK1 WHAT_CHECK Packing: -2.691
WCK2 WHAT_CHECK Ramachandran: -6.904
WCK3 WHAT_CHECK Chi angles: -4
WCK4 WHAT_CHECK Backbone: -1.883

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).