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NMR processing:
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Ab initio:
GeNMR
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Fragment-based:
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Structure from chemical shifts:
Fragment-based:
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Torsion angles from chemical shifts:
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Flexibility from chemical shifts:
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Disordered proteins:
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Format conversion & validation:
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From NMR-STAR 3.1
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NMR sample preparation:
Protein disorder:
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Protein solubility:
camLILA
ccSOL
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Default 1H NMR sequential assignments and identification of secondary structural elements in

1H NMR sequential assignments and identification of secondary structural elements in oxidized putidaredoxin, an electron-transfer protein from Pseudomonas.

Related Articles 1H NMR sequential assignments and identification of secondary structural elements in oxidized putidaredoxin, an electron-transfer protein from Pseudomonas.

Biochemistry. 1992 Feb 25;31(7):1961-8

Authors: Ye XM, Pochapsky TC, Pochapsky SS

Sequential 1H resonance assignments and secondary structural features of putidaredoxin (Pdx), a 106-residue globular protein consisting of a single polypeptide chain and a [2Fe-2S] cluster, are reported. No crystal structure has been obtained for Pdx or for any closely homologous protein. The sequentially assigned resonances represent ca. 83% of all the protons in Pdx and a large majority of those protons which are unaffected by the paramagnetism of the iron-sulfur cluster. A total of three alpha-helices, two beta-sheets, and two type I beta-turns have been identified from NOE (nuclear Overhauser effect) patterns. Besides the extensive beta-sheet described previously, a second sheet is identified, consisting of two short antiparallel strands (Ile 89-Thr 91 and Val 21-Leu 23), one of which ends in a tight type I turn (Thr 91-Pro 92-Glu 93-Leu 94). One short helix (Ala 26-Gly 31) and a second longer helical region (Glu 54-Cys 73) are present. This second helical region is discontinuous, breaking at Pro 61, resuming at Glu 65, and ending at Cys 73. The functionally important C-terminal tryptophan residue has been identified, and some structural constraints on this residue are described. Previously reported functional data concerning Pdx are discussed in light of present structural information. Finally, approaches to the determination of a high-resolution solution structure of the protein are discussed.

PMID: 1536837 [PubMed - indexed for MEDLINE]



Source: PubMed
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