cofactor

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Related to ristocetin cofactor: mixing study

cofactor

 [ko´fak-ter]
an element or principle, e.g., a coenzyme, with which another must unite in order to function.
heparin cofactor II a member of the serpin group that inhibits thrombin.

co·fac·tor

(kō'fak'ter, tōr),
1. Synonym(s): coenzyme
2. An atom or molecule essential for the action of a large molecule, for example, heme in hemoglobin, magnesium in chlorophyll. Solo metal ions are regarded as cofactors for proteins, but not as coenzymes.

cofactor

/co·fac·tor/ (ko´fak-ter) an element or principle, e.g., a coenzyme, with which another must unite in order to function.
heparin cofactor II  a serine proteinase inhibitor of the serpin family that inhibits thrombin.

cofactor

(kō′făk′tər)
n.
1. One of two or more contributing factors.
2. A substance, such as a metallic ion or coenzyme, that must be associated with an enzyme for the enzyme to function.

co·fac·tor

(kō'fak'tŏr)
1. Synonym(s): coenzyme.
2. An atom or molecule essential for the action of a large molecule; e.g., heme in hemoglobin, magnesium in chlorophyll.

cofactor

a substance that is essential for the catalytic activity of some enzymes, binding to the enzyme only during the reaction. Cofactors can be metallic ions, or nonprotein organic molecules (coenzymes) such as vitamins in the B-COMPLEX.

co·fac·tor

(kō'fak'tŏr)
An atom or molecule essential for the action of a large molecule.

cofactor

an element or principle, e.g. a coenzyme, with which another must unite in order to function.

ristocetin cofactor
see ristocetin cofactor.
References in periodicals archive ?
Limitations of the ristocetin cofactor assay in measurement of von Willebrand factor function.
Common VWF exon 28 polymorphism in African Americans affecting the VWF activity assay by ristocetin cofactor.
00 years Patients Col/Epi(s) Col/ADP(s) 1 205 170 2 120 86 3 152 98 4 177 84 5 143 63 6 105 84 7 101 76 8 156 109 9 229 134 10 134 96 11 131 75 12 136 89 13 234 119 14 135 80 Col/ADP: collagen/adenosine diphosphate, Col/Epi: collagen/ epinephrine, vWF:Ag: von Willebrand factor antigen, vWF:RCo: ristocetin cofactor activity.
Use of the collagen-binding assay for von Willebrand factor in the analysis of type 2M von Willebrand disease: a comparison with the ristocetin cofactor assay.
Common VWF exon 28 polymorphisms in African Americans affecting the VWF activity assay by ristocetin cofactor.
Tests for von Willebrand factor antigen and von Willebrand factor ristocetin cofactor showed normal values, thereby excluding von Willebrand disease.
Current functional tests for vWF include the ristocetin cofactor activity assay and the collagen-binding assay.
Use of collagen binding assay for von Willebrand factor in the analysis of type 2M von Willebrand disease: a comparison with the ristocetin cofactor assay.
Jurgen Patzke, Konrad Braun for their work on a ready-to-use ristocetin cofactor test reagent possessing long-term stability;
Ristocetin cofactor activity (RCF) assays were performed on the BCS (Dade Behring).
The ristocetin cofactor is a test to assess VWF activity.