SPACI score report for 1sf4 in ASTRAL 1.75:

WARNING! The SPACI score for this entry is not valid. This is not an X-ray structure, so the resolution and R-factor listed may be arbitrary and not valid. The R-factor is not available and an abitrary R-factor has been used.

PDB Entry: 1sf4
SPACI score: 0.29 (not valid)
AEROSPACI score: 0.29 (not valid)

Experiment type: PDIF
Resolution: 2.98
R-factor: 0.25
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 3
WCK1 WHAT_CHECK Packing: -4.692
WCK2 WHAT_CHECK Ramachandran: -3.37
WCK3 WHAT_CHECK Chi angles: -0.314
WCK4 WHAT_CHECK Backbone: -3.686

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).