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NMR processing:
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NOEs:
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UNIO Candid
ASDP
Structure from NMR restraints:
Ab initio:
GeNMR
Cyana
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Fragment-based:
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Template-based:
GeNMR
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Refinement:
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Structure from chemical shifts:
Fragment-based:
WeNMR CS-Rosetta
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Homology-based:
CS23D
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Torsion angles from chemical shifts:
Preditor
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Secondary structure from chemical shifts:
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d2D
PECAN
Flexibility from chemical shifts:
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Interactions from chemical shifts:
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Chemical shifts re-referencing:
Shiftcor
UNIO Shiftinspector
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NMR model quality:
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RDCs:
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MetaMQAPII
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NMR spectrum prediction:
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Flexibility from structure:
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Methyl S2
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Molecular dynamics:
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Chemical shifts prediction:
From structure:
Shiftx2
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ArShift- Aromatic
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Proshift
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From sequence:
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Camcoil
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Disordered proteins:
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Format conversion & validation:
CCPN
From NMR-STAR 3.1
Validate NMR-STAR 3.1
NMR sample preparation:
Protein disorder:
DisMeta
Protein solubility:
camLILA
ccSOL
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camGroEL
Zyggregator
Isotope labeling:
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Solid-state NMR:
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Old 11-19-2010, 08:32 PM
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Default Selective 'unlabeling' of amino acids in fractionally 13C labeled proteins: an approa

Selective 'unlabeling' of amino acids in fractionally 13C labeled proteins: an approach for stereospecific NMR assignments of CH3 groups in Val and Leu residues.

Related Articles Selective 'unlabeling' of amino acids in fractionally 13C labeled proteins: an approach for stereospecific NMR assignments of CH3 groups in Val and Leu residues.

J Biomol NMR. 2001 Mar;19(3):267-72

Authors: Atreya HS, Chary KV

A novel methodology for stereospecific NMR assignments of methyl (CH3) groups of Val and Leu residues in fractionally 13C-labeled proteins is presented. The approach is based on selective 'unlabeling' of specific amino acids in proteins while fractionally 13C-labeling the rest. A 2D [13C-1H] HSQC spectrum recorded on such a sample is devoid of peaks belonging to the 'unlabeled' amino acid residues. Such spectral simplification aids in unambiguous stereospecific assignment of diastereotopic CH3 groups in Val and Leu residues in large proteins. This methodology has been demonstrated on a 15 kDa calcium binding protein from Entamoeba histolytica (Eh-CaBP).

PMID: 11330814 [PubMed - indexed for MEDLINE]



Source: PubMed
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