Data Item _pdbx_nmr_exptl_sample.isotopic_labeling
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General 
- Item name
- _pdbx_nmr_exptl_sample.isotopic_labeling
- Category name
- pdbx_nmr_exptl_sample
- Attribute name
- isotopic_labeling
- Required in PDB entries
- no
- Used in current PDB entries
- Yes, in about 2.6 % of entries
Item Description
The isotopic composition of each component, including
the % labeling level, if known. For example:
1. Uniform (random) labeling with 15N: U-15N
2. Uniform (random) labeling with 13C, 15N at known labeling
levels: U-95% 13C;U-98% 15N
3. Residue selective labeling: U-95% 15N-Thymine
4. Site specific labeling: 95% 13C-Ala18,
5. Natural abundance labeling in an otherwise uniformly labled
biomolecule is designated by NA: U-13C; NA-K,H
Item Example1
U-13C,15N
Item Example2
U-2H
Data Type 
- Data type code
- line
- Data type detail
- char item types / multi-word items ...
- Primitive data type code
- char
- Regular expression
- [][ \t_(),.;:"&<>/\{}'`~!@#$%?+=*A-Za-z0-9|^-]*
Aliases
| Alias Item Name | Dictionary Name | Dictionary Version |
|---|---|---|
| _rcsb_nmr_exptl_sample.isotopic_labeling | cif_rcsb.dic | 1.1 |