Catalytic-activity fraction (cat.fr.)
Synonym |
Chemical amount | ||
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Abbreviation |
Cat.fr. | ||
Definition in words |
Catalytic-activity of component B divided by catalytic-activity of system 1 Note 1: Component B is a catalytic component Note 2: Component B can be an isoenzynes of all isoenzymes (system 1) Note 3: System 1 is all isoenzymes of a particular “enzyme family” |
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Definition by equation |
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Systematic terms
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Catalytic-activity fraction of component B in system 1 | ||
Result type |
Rational scale |
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Numerical values from 0-∞ |
Unit |
10-18, 10-15, 10-12, 10-9, 10-6, 10-3, 1 (one), etc. | ||
Special rule(s) in the NPU syntax |
The catalytic entities (component B and system 1) are termed according to the International Enzyme Nomenclature (see Medical and metrological vocabulary). Unit, one (1) is omitted in the NPU syntax “Procedure” is stated in the specification to the kind-of-property in the NPU definition. “Procedure” indicates that the measurement procedure must be stated somewhere else than the NPU code and there may be difficulties in comparing values for the same NPU code. |
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Reference |
Ferard G, Dybkaer R, Fuentes-Arderiu X. Compendium of Terminology and Nomenclature of Properties in Clinical Laboratory Sciences : Recommendations 2016. 1 ed: Royal Society of Chemistry; 2016. 182 p. doi:10.1039/9781782622451. |
Laboratory field |
Example |
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Clinical Chemistry |
Generic abbreviated |
NPU21544 ALP(P)—Alkaline phosphatase, bone type; cat.fr. = ? | T | |
Full result | NPU21544 Alkaline phosphatase(Plasma)—Alkaline phosphatase, bone type; catalytic-activity fraction = 0.45 | |||
Abbreviated result | NPU21544 ALP(P)—Alkaline phosphatase, bone type; cat.fr. = 0.45 | |||
Written expression | The catalytic-activity of Alkaline phosphatase, bone type divided by catalytic-activity of (all) Alkaline phosphatase from Mr. Smith’s plasma is [0.45]. | |||
Equation
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Reference |
NPU database, https://www.ifcc.org/ifcc-scientific-division/sd-committees/c-npu/npusearch/ and http://www.labterm.dk/default.aspx |
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Kind-of-property
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Nominal kind-of-property
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Kind-of-quantity
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Ordinal kind-of-quantity
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Unitary kind-of-quantity
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Rational unitary kind-of-quantity
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Catalytic-activity fraction
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Reference |
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Date | Term | Note |
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1996-01-01 | Catalytic-activity fraction | Term established |
NPU term identifier |
QU50034 |
Date | Notes |
Example |
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2019-06-04 | Catalytic component B is an enzyme, defined by the international enzyme nomenclature (https://www.expasy.org/), and shall be used for catalytic-activity kinds-of-property. Proteins are defined and termed by UNIPROT (https://www.uniprot.org/) and should not be used in relation to catalytic-activity kinds-of-property. Though there are overlaps between these two nomenclatures.. |
The enzyme and protein nomenclatures can have different terms for the same molecule.
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