SPACI score report for 1tx4 in ASTRAL 2.05:

PDB Entry: 1tx4
SPACI score: 0.56
AEROSPACI score: 0.56

Experiment type: XRAY
Resolution: 1.65
R-factor: 0.169
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -1.001
WCK2 WHAT_CHECK Ramachandran: -1.2
WCK3 WHAT_CHECK Chi angles: -0.701
WCK4 WHAT_CHECK Backbone: 0.261

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).