protein A chromatography medium
IRI: https://spec.industrialontologies.org/ontology/construct/ProteinAChromatographyMedium
Defined In: https://spec.industrialontologies.org/ontology/biopharma/BiopharmaEquipment/
SubClass Of: affinity chromatography medium
Class Hierarchy
owl:Thing › bfo:entity › bfo:continuant › bfo:independent continuant › bfo:material entity › chromatography medium › affinity chromatography medium › protein A chromatography medium
Definition
affinity chromatography medium which has a protein A as a ligand
Explanatory Notes
1) Protein A is a bacterial cell wall protein derived from Staphylococcus aureus that specifically binds to the Fc region of IgG antibodies. This property enables the selective capture of antibodies from complex mixtures. Affinity chromatography using Protein A ligands is widely employed in the biopharmaceutical industry as a primary capture step in monoclonal antibody purification due to its high selectivity and strong binding capacity 2) It should be noted that the dominant use of protein A resin is IgG capture from a mixture. However, to keep this concept “future proof” and given the predominantly structure-based definitions of the resin this has not been included in the definition. Instead a ‘protein binding capability’ has been introduced and added as an axiom. Since currently there is no protein and antibody hierarchy present this capability has not been expanded to IgG specifically. This will be modeled in a future version
Examples
- Protein A immobilized on cross-linked agarose beads; Recombinant Protein A immobilized on methacrylate beads
Primitive Class
This class is declared primitive and it does not have necessary and sufficient condiftions defined.
Primitive Rationale
There are insufficient constructs in the ontology to create necessary and sufficient conditions. Specifically Protein A ligand is missing
Formal Axioms
First-Order Logic Axioms
ProteinAChromatographyMedium(x) → AffinityChromatographyMedium(x) ∧ ∃c(ProteinBindingCapability(c) ∧ hasCapability(x, c))
Semi-Formal Natural Language Axioms
if x is a ‘protein A chromatography medium’ then x is an ‘affinity chromatography medium’ that has capability some ‘protein binding capability’