Previous studies using synthetic peptides and monoclonal antibodies have implicated the N-terminal 39-residue segment as a receptor binding region of mouse gamma-interferon (MuIFN gamma). In this work, we report the solution structure of this fragment (dissolved in water with 40% trifluoroethanol) as determined by proton NMR spectroscopy. The proton sequence-specific assignments were determined from TOCSY and NOESY spectra using established procedures. The secondary structure is characterized by two well-defined alpha-helical regions composed of residues 5-16 and 22-37. These two helices are joined by a loop. No NOESY contacts between the two helical regions were detected. Molecular models consistent with the NMR data were generated for MuIFN gamma (1-39) using distance geometry and restrained molecular dynamics/energy minimization calculations. Comparison with similar N-terminal domains in the published NMR and crystallographic studies on the dimeric human and rabbit IFN gamma suggests some similarities in the structures except that the helical regions in the fragment are longer, and considerable variation may exist in the relative orientation of the two helices in the solution phase. The presence of stronger alpha N sequential NOE's suggests that this peptide is flexible. The absence of NOESY contacts involving the N-terminal tripeptide suggests that this region undergoes rapid segmental motion. The data presented here on MuIFN gamma (1-39), combined with the studies on human and rabbit IFN gamma, suggest that the N-terminal receptor binding domain of the protein can undergo structural changes, the understanding of which may provide insight into the basis for receptor interaction by this lymphokine.
[NMR paper] Proton and nitrogen NMR sequence-specific assignments and secondary structure determi
Proton and nitrogen NMR sequence-specific assignments and secondary structure determination of the Bacillus subtilis SPO1-encoded transcription factor 1.
Related Articles Proton and nitrogen NMR sequence-specific assignments and secondary structure determination of the Bacillus subtilis SPO1-encoded transcription factor 1.
Biochemistry. 1994 Jul 26;33(29):8842-52
Authors: Jia X, Reisman JM, Hsu VL, Geiduschek EP, Parello J, Kearns DR
Sequence-specific 1H and 15N NMR1 assignments are reported for the transcription factor 1 (TF1), a 22-kDa type...
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[NMR paper] Sequence-specific 1H NMR assignments and secondary structure of the streptococcal pro
Sequence-specific 1H NMR assignments and secondary structure of the streptococcal protein G B2-domain.
Related Articles Sequence-specific 1H NMR assignments and secondary structure of the streptococcal protein G B2-domain.
Biochemistry. 1992 Apr 14;31(14):3604-11
Authors: Orban J, Alexander P, Bryan P
Two-dimensional NMR spectroscopy has been used to obtain sequence-specific 1H NMR assignments for the IgG-binding B2-domain of streptococcal protein G. Secondary structure elements were identified from analysis of characteristic backbone-backbone...
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[NMR paper] Sequence-specific 1H-NMR assignments and secondary structure of the lipoyl domain of
Sequence-specific 1H-NMR assignments and secondary structure of the lipoyl domain of the Bacillus stearothermophilus pyruvate dehydrogenase multienzyme complex.
http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--www3.interscience.wiley.com-aboutus-images-wiley_interscience_pubmed_logo_FREE_120x27.gif Related Articles Sequence-specific 1H-NMR assignments and secondary structure of the lipoyl domain of the Bacillus stearothermophilus pyruvate dehydrogenase multienzyme complex.
Eur J Biochem. 1991 Oct 1;201(1):203-9
Authors: Dardel F, Laue ED, Perham RN...
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[NMR paper] Sequence-specific 1H NMR assignments, secondary structure, and location of the calciu
Sequence-specific 1H NMR assignments, secondary structure, and location of the calcium binding site in the first epidermal growth factor like domain of blood coagulation factor IX.
Related Articles Sequence-specific 1H NMR assignments, secondary structure, and location of the calcium binding site in the first epidermal growth factor like domain of blood coagulation factor IX.
Biochemistry. 1991 Jul 30;30(30):7402-9
Authors: Huang LH, Cheng H, Pardi A, Tam JP, Sweeney WV
Factor IX is a blood clotting protein that contains three regions,...
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[NMR paper] Sequence-specific 1H NMR assignments, secondary structure, and location of the calciu
Sequence-specific 1H NMR assignments, secondary structure, and location of the calcium binding site in the first epidermal growth factor like domain of blood coagulation factor IX.
Related Articles Sequence-specific 1H NMR assignments, secondary structure, and location of the calcium binding site in the first epidermal growth factor like domain of blood coagulation factor IX.
Biochemistry. 1991 Jul 30;30(30):7402-9
Authors: Huang LH, Cheng H, Pardi A, Tam JP, Sweeney WV
Factor IX is a blood clotting protein that contains three regions,...
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[NMR paper] Sequence-specific 1H NMR assignments and determination of the secondary structure for
Sequence-specific 1H NMR assignments and determination of the secondary structure for the activation domain isolated from pancreatic procarboxypeptidase B.
Related Articles Sequence-specific 1H NMR assignments and determination of the secondary structure for the activation domain isolated from pancreatic procarboxypeptidase B.
Biochemistry. 1990 Aug 14;29(32):7515-22
Authors: Vendrell J, Wider G, Avilés FX, Wüthrich K
Nearly complete sequence-specific 1H NMR assignments are presented for amino acid residues 3-81 in the 81-residue globular...
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[NMR paper] Sequence-specific [1H]NMR resonance assignments and secondary structure identificatio
Sequence-specific NMR resonance assignments and secondary structure identification for 1- and 2-zinc finger constructs from SW15. A hydrophobic core involving four invariant residues.
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FEBS Lett. 1990 Mar 26;262(2):179-84
Authors: Neuhaus D, Nakaseko Y, Nagai K, Klug A
Complete NMR resonance assignments are presented for the second of the three...
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[NMR paper] Sequence-specific 1H NMR assignments and secondary structure of eglin c.
Sequence-specific 1H NMR assignments and secondary structure of eglin c.
Related Articles Sequence-specific 1H NMR assignments and secondary structure of eglin c.
Biochemistry. 1990 Feb 13;29(6):1465-74
Authors: Hyberts SG, Wagner G
Sequence-specific nuclear magnetic resonance assignments were obtained for eglin c, a polypeptide inhibitor of the granulocytic proteinases elastase and cathepsin G and some other proteinases. The protein consists of a single polypeptide chain of 70 residues. All proton resonances were assigned except for some...