2KMG

The structure of the KlcA and ArdB proteins show a novel fold and antirestriction activity against Type I DNA restriction systems in vivo but not in vitro

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-15N HSQC	0.7mM [U-98% 13C; U-98% 15N] KlcA-1, 20mM [U-100% 2H] sodium acetate-2, 0.05% sodium azide-3	90% H2O/10% D2O	20	6.0	ambient	298
2	3D CBCA(CO)NH	0.7mM [U-98% 13C; U-98% 15N] KlcA-1, 20mM [U-100% 2H] sodium acetate-2, 0.05% sodium azide-3	90% H2O/10% D2O	20	6.0	ambient	298
3	3D CBCANH	0.7mM [U-98% 13C; U-98% 15N] KlcA-1, 20mM [U-100% 2H] sodium acetate-2, 0.05% sodium azide-3	90% H2O/10% D2O	20	6.0	ambient	298
4	3D HNCO	0.7mM [U-98% 13C; U-98% 15N] KlcA-1, 20mM [U-100% 2H] sodium acetate-2, 0.05% sodium azide-3	90% H2O/10% D2O	20	6.0	ambient	298
5	3D HNCACO	0.7mM [U-98% 13C; U-98% 15N] KlcA-1, 20mM [U-100% 2H] sodium acetate-2, 0.05% sodium azide-3	90% H2O/10% D2O	20	6.0	ambient	298
6	3D HBHANH	0.7mM [U-98% 13C; U-98% 15N] KlcA-1, 20mM [U-100% 2H] sodium acetate-2, 0.05% sodium azide-3	90% H2O/10% D2O	20	6.0	ambient	298
7	3D HBHA(CO)NH	0.7mM [U-98% 13C; U-98% 15N] KlcA-1, 20mM [U-100% 2H] sodium acetate-2, 0.05% sodium azide-3	90% H2O/10% D2O	20	6.0	ambient	298
8	2D 1H-13C HSQC (Aromatic Selective)	0.7mM [U-98% 13C; U-98% 15N] KlcA-1, 20mM [U-100% 2H] sodium acetate-2, 0.05% sodium azide-3	90% H2O/10% D2O	20	6.0	ambient	298
9	3D H(CCO)NH	0.7mM [U-98% 13C; U-98% 15N] KlcA-1, 20mM [U-100% 2H] sodium acetate-2, 0.05% sodium azide-3	90% H2O/10% D2O	20	6.0	ambient	298
10	3D C(CCO)NH	0.7mM [U-98% 13C; U-98% 15N] KlcA-1, 20mM [U-100% 2H] sodium acetate-2, 0.05% sodium azide-3	90% H2O/10% D2O	20	6.0	ambient	298
11	3D HCCH-TOCSY	0.7mM [U-98% 13C; U-98% 15N] KlcA-1, 20mM [U-100% 2H] sodium acetate-2, 0.05% sodium azide-3	90% H2O/10% D2O	20	6.0	ambient	298
12	2D 1H-13C HSQC	0.7mM [U-98% 13C; U-98% 15N] KlcA-1, 20mM [U-100% 2H] sodium acetate-2, 0.05% sodium azide-3	90% H2O/10% D2O	20	6.0	ambient	298
13	3D 1H-15N NOESY	0.7mM [U-98% 13C; U-98% 15N] KlcA-1, 20mM [U-100% 2H] sodium acetate-2, 0.05% sodium azide-3	90% H2O/10% D2O	20	6.0	ambient	298
14	3D 1H-13C NOESY	0.7mM [U-98% 13C; U-98% 15N] KlcA-1, 20mM [U-100% 2H] sodium acetate-2, 0.05% sodium azide-3	90% H2O/10% D2O	20	6.0	ambient	298
15	2D HBCBCGCDHD	0.7mM [U-98% 13C; U-98% 15N] KlcA-1, 20mM [U-100% 2H] sodium acetate-2, 0.05% sodium azide-3	90% H2O/10% D2O	20	6.0	ambient	298
16	2D HBCBCGCDCEHE	0.7mM [U-98% 13C; U-98% 15N] KlcA-1, 20mM [U-100% 2H] sodium acetate-2, 0.05% sodium azide-3	90% H2O/10% D2O	20	6.0	ambient	298
17	T1	0.7mM [U-98% 15N] KlcA-8, 20mM [U-100% 2H] sodium acetate-9, 0.05% sodium azide-10	90% H2O/10% D2O	20	6.0	ambient	298
18	T2	0.7mM [U-98% 15N] KlcA-8, 20mM [U-100% 2H] sodium acetate-9, 0.05% sodium azide-10	90% H2O/10% D2O	20	6.0	ambient	298
19	Heteronuclear NOE	0.7mM [U-98% 15N] KlcA-8, 20mM [U-100% 2H] sodium acetate-9, 0.05% sodium azide-10	90% H2O/10% D2O	20	6.0	ambient	298
20	IPAP for RDC measurement	0.7mM [U-98% 15N] KlcA-4, 20mM [U-100% 2H] sodium acetate-5, 0.05% sodium azide-6, 6.25mg/mL Pf1 phage-7	90% H2O/10% D2O	20	6.0	ambient	298
21	2D 1H-13C HSQC	0.7mM [U-98% 13C; U-98% 15N] KlcA-1, 20mM [U-100% 2H] sodium acetate-2, 0.05% sodium azide-3	90% H2O/10% D2O	20	6.0	ambient	298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	800
2	Bruker	AVANCE	600

NMR Refinement
Method	Details	Software
torsion angle dynamics, simulated annealing		TopSpin

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	100
Conformers Submitted Total Number	20
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	TopSpin	1.3	Bruker Biospin
2	structure solution	CYANA	2.1	Guntert, Mumenthaler and Wuthrich
3	refinement	CNS	1.1	Brunger, Adams, Clore, Gros, Nilges and Read
4	chemical shift assignment	CcpNmr Analysis	1.0.15	CCPN
5	data analysis	CcpNmr Analysis	1.0.15	CCPN
6	peak picking	CcpNmr Analysis	1.0.15	CCPN
7	processing	Azara	2.7	Boucher
8	structure validation	ProcheckNMR	3.5	Laskowski and MacArthur
9	structure validation	WHAT IF		Vriend
10	data analysis	TALOS		Cornilescu, Delaglio and Bax