SPACI score report for 2btf in ASTRAL 1.55:

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.

PDB Entry: 2btf
SPACI score: 0.3 (not valid)
AEROSPACI score: 0.3 (not valid)

Experiment type: -
Resolution: 2.55
R-factor: 0.199
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -2.433
WCK2 WHAT_CHECK Ramachandran: -2.642
WCK3 WHAT_CHECK Chi angles: -3.023
WCK4 WHAT_CHECK Backbone: -1.157

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).