1D7Q | pdb_00001d7q

HUMAN TRANSLATION INITIATION FACTOR EIF1A

SOLUTION NMR

---

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	3D_13C-SEPARATED_NOESY	0.8MM U-13C,15N EIF1A, 10MM PHOSPHATE BUFFER, PH 7.5, 500MM NACL, 1MM DTT, 0.1MM EDTA		500mM	7.5	1 atm	298
2	3D_15N-SEPARATED_NOESY	0.5MM U-15N EIF1A, 10MM PHOSPHATE BUFFER, PH 7.5, 500MM NACL, 1MM DTT, 0.1MM EDTA		500mM	7.5	1 atm	298
3	2D NOESY	1.2MM EIF1A, 10MM PHOSPHATE BUFFER, PH 7.5, 500MM NACL, 1MM DTT, 0.1MM EDTA		500mM	7.5	1 atm	298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	INOVA	750
2	Varian	INOVA	500
3	Varian	UNITY	500

NMR Refinement
Method	Details	Software
STRUCTURES WERE CALCULATED USING SIMULATED ANNEALING/MOLECULAR DYNAMICS FROM AN EXTENDED CONFORMATION WITH RANDOM PHI/PSI ANGLES.	CALCULATIONS WERE RESTRAINED WITH THE FOLLOWING NMR DATA. NOE DISTANCE RESTRAINTS INTRA-RESIDUE 607 INTER-RESIDUE SEQUENTIAL (IJ=1) 266 INTER-RESIDUE MEDIUM (IJ <= 4) 105 INTER-RESIDUE LONG (IJ > 4) 342 HYDROGENS BONDS: PROTEIN BACKBONE 40 DIHEDRAL ANGLES: PHI 65 PSI 65 NO NOE VIOLATIONS >0.3 A IN FINAL STRUCTURES. RMS DEVIATIONS OF THE ENSEMBLE SUPERPOSITION TO THE AVERAGE STRUCTURE ARE: BACKBONE 39-131 0.57 A SECONDARY STRUCTURE 0.23 A HEAVY ATOMS 39-131 1.17 A SECONDARY STRUCTURE 0.72 A BOND LENGTHS 0.0016 A BOND ANGLES 0.345 DEGREE IMPROPER ANGLES 0.259 DEGREE. NOTE THAT RESIDUES 1-38 AND 132-143 HAD NO LONG RANGE NOES AND ARE DISORDERED IN THE CALCULATED STRUCTURES.	VNMR

NMR Ensemble Information
Conformer Selection Criteria	structures with the least restraint violations
Conformers Calculated Total Number	50
Conformers Submitted Total Number	20
Representative Model	8 (lowest energy)

Additional NMR Experimental Information

Details

THE PROTEIN WAS ASSIGNED FROM THE TRIPLE RESONANCE EXPERIMENTS HNCA, HN(CO)CA, HNCO, HN(CA)CO, CBCA(CO)NH, HBHA(CBCACO)NH, H(CCCO)NH, (H)C(CCO)NH, AND HCCH- TOCSY. VAL AND LEU METHYL GROUPS WERE STEREOSPECIFICALLY ASSIGNED FROM ANALYSIS OF MULTIPLET COUPLINGS IN AN HSQC OF 10% 13C-LABELED PROTEIN. BACKBONE DIHEDRAL ANGLES WERE ESTIMATED USING THE PROGRAM TALOS AND BACKBONE HETERONUCLEAR CHEMICAL SHIFTS.

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	VNMR	6.1	VARIAN
2	processing	Felix	98	BIOSYM
3	data analysis	XEASY	1.2	C. BARTELS, T. XIA, M. BILLETER, P. GUNTERT, AND K. WUTHRICH
4	structure solution	X-PLOR	3.851	A.T. BRUNGER
5	data analysis	TALOS	1.0	G. CORNILESCU, F. DELAGLIO, AND A. BAX
6	refinement	X-PLOR	3.851	A.T. BRUNGER