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| Content Provider | PubMed Central |
|---|---|
| Author | Feher, V. A. Zapf, J. W. Hoch, J. A. Dahlquist, F. W. Whiteley, J. M. Cavanagh, J. |
| Abstract | Spo0F, sporulation stage 0 F protein, a 124-residue protein responsible, in part, for regulating the transition of Bacillus subtilis from a vegetative state to a dormant endospore, has been studied by high-resolution NMR. The 1H, 15N, and 13C chemical shift assignments for the backbone residues have been determined from analyses of 3D spectra, 15N TOCSY-HSQC, 15N NOESY-HSQC, HNCA, and HN(CO)CA. Assignments for many sidechain proton resonances are also reported. The secondary structure, inferred from short- and medium-range NOEs, 3JHN alpha coupling constants, and hydrogen exchange patterns, define a topology consistent with a doubly wound (alpha/beta)5 fold. Interestingly, comparison of the secondary structure of Spo0F to the structure of the Escherichia coli response regulator, chemotaxis Y protein (CheY) (Volz K, Matsumura P, 1991, J Biol Chem 266:15511-15519; Bruix M et al., 1993, Eur J Biochem 215:573-585), show differences in the relative length of secondary structure elements that map onto a single face of the tertiary structure of CheY. This surface may define a region of binding specificity for response regulators. Magnesium titration of Spo0F, followed by amide chemical shift changes, gives an equilibrium dissociation constant of 20 +/- 5 mM. Amide resonances most perturbed by magnesium binding are near the putative site of phosphorylation, Asp 54. |
| Related Links | http://dx.doi.org/10.1002/pro.5560040915 |
| Ending Page | 1814 |
| Page Count | 14 |
| Starting Page | 1801 |
| File Format | |
| ISSN | 09618368 |
| e-ISSN | 1469896X |
| Journal | Protein Science : A Publication of the Protein Society |
| Issue Number | 9 |
| Volume Number | 4 |
| Language | English |
| Publisher | Cold Spring Harbor Laboratory Press |
| Publisher Date | 1995-09-01 |
| Access Restriction | Open |
| Rights Holder | Cold Spring Harbor Laboratory Press |
| Subject Keyword | Biochemistry Molecular Biology Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Medicine Molecular Biology Biochemistry |
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