Data Item _pdbx_nmr_exptl_sample.concentration_units
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General 
- Item name
- _pdbx_nmr_exptl_sample.concentration_units
- Category name
- pdbx_nmr_exptl_sample
- Attribute name
- concentration_units
- Required in PDB entries
- no
- Required for PDB deposition
- yes
- Used in current PDB entries
- Yes, in about 3.3 % of entries
Item Description
The concentration units of the component.
Item Example1
mg/mL for mg per milliliter
Item Example2
mM for millimolar
Item Example3
% for percent by volume
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|^-]*
Controlled Vocabulary
| Allowed Value | Details |
|---|---|
| % | percent by volume |
| % v/v | percent volume to volume |
| % w/v | percent weight to volume |
| % w/w | percent weight to weight |
| M | molar |
| g/L | grams per liter |
| mM | millimolar |
| mg | milligrams |
| mg/L | milligrams per liter |
| mg/mL | mg per milliliter |
| mg/uL | milligrams per microliter |
| nM | nanomolar |
| na | |
| pM | picomolar |
| saturated | |
| uM | micromolar |
| ug/mL | microgram per milliter |
| ug/uL | micrograms per microliter |
| v/v | volume to volume |
| w/v | mass-volume percent |
| w/w | weight to weight |
Controlled Vocabulary at Deposition
| Allowed Value | Details |
|---|---|
| % | percent |
| % v/v | |
| % w/v | |
| % w/w | |
| M | Molar |
| g/L | grams per liter |
| mM | millimolar |
| mg/L | |
| mg/mL | mg per milliliter |
| mg/uL | |
| nM | nanomolar |
| na | |
| pM | picomolar |
| saturated | |
| uM | micromolar |
| ug/mL | |
| ug/uL | |
| v/v | volume to volume |
| w/v | weight to volume percent |
| w/w |
Aliases
| Alias Item Name | Dictionary Name | Dictionary Version |
|---|---|---|
| _rcsb_nmr_exptl_sample.concentration_units | cif_rcsb.dic | 1.1 |