Table 1. Data-collection statistics.

Values in parentheses are for the highest resolution shell.

	NtCPIP1-Δ(1:127)	NtCPIP1-wt
Beamline	BESSY-MX BL14.1
Detector	Rayonics MX-225 3 × 3 CCD detector
Temperature (K)	100
Space group	P21212	C222
Unit-cell parameters (Å, °)	a = 65.6, b = 141.5, c = 50.9, α = β = γ = 90	a = 136.8, b = 260.8, c = 378.2, α = β = γ = 90
Wavelength (Å)	0.9180	0.9180
Resolution range (Å)	35.0–2.38 (2.44–2.38)	20.0–8.00 (8.21–8.00)
Unique reflections	19599 (1409)	6569 (538)
Multiplicity	4.0 (3.8)	3.8 (3.8)
Completeness (%)	99.6 (98.1)	87.2 (95.6)
Mean I/σ(I)	15.8 (2.5)	8.7 (1.6)
Rmeas† (%)	7.6 (61.1)	16.8 (85.3)
Rmrgd-F‡ (%)	13.9 (83.2)	26.6 (110.2)

^† R _meas is defined as (Diederichs & Karplus, 1997 ▶).

^‡ R _mrgd-F is defined as (Diederichs & Karplus, 1997 ▶).