Component
Human CA2 overall protein fold
Overall crystallographic topology of CA2; distinct from thermal stability and catalytic activity.
1 recorded relationships. Experimental role, claim status and evidence remain attached to each record.
How nutrients influence it
Every nutrient with a recorded effect on this component, credited to the nutrient that acted rather than the chapter that recorded it. Open a nutrient to see the findings and the conditions they were measured under.
Other things that act on it
Enzymes, hormones, genes, and other components with a recorded effect. These are not nutrients, so they do not count toward the arrows above. Each finding names the chapter that recorded it.
How nutrients reach it in more than one step
Chains of two or more recorded steps that end here, grouped by the nutrient they start from. Each step is a separate finding, so a chain is a route a mechanism could take, not proof that it does.
Tracing routes…
What it does
Every recorded relationship this component is part of, grouped by its role. Plain wording comes first; the technical statement follows.
What acts on it
The chelated human CA2 structure retained the overall protein fold relative to zinc-containing CA2.
Experimental context and source evidence
- cross_nutrient
- false
- experimental_model
- Purified recombinant human CA2 expressed in E. coli; chelation, crystallography, DSC and H/D exchange
- exposure
- Chelated CA2 crystallography at 1.26 Å resolution.
- limitations
- Purified recombinant protein; chelation is not dietary deficiency. Approximately 10% zinc remained in the nominal apo preparation.
- nutrient_topic
- Zinc research collection; topical membership is not evidence of a direct dietary effect. · Zinc
- organism
- Homo sapiens
- plain_language
- An enzyme can lose activity before its entire shape collapses.
- primary_references
- [zinc-enz-ca2-apo2009] Apo-human carbonic anhydrase II revisited: implications of the loss of a metal in protein structure, stability, and solvent network. (2009). https://pubmed.ncbi.nlm.nih.gov/19583303/ DOI: 10.1021/bi9007512
- tissue_or_cell_type
- Purified protein; cell-free assay
Zinc: transport, enzyme loading, deficiency and nutrient interactions (2026-09-17) · lines 638–649
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Purified recombinant human CA2 expressed in E. coli; chelation, crystallography, DSC and H/D exchange · source_derived_draft · unverified_draft
### zinc-enz-ca2-fold-preserved The chelated human CA2 structure retained the overall protein fold relative to zinc-containing CA2. Condition category: normal nutrient_topic: Zinc research collection; topical membership is not evidence of a direct dietary effect. plain_language: An enzyme can lose activity before its entire shape collapses. organism: Homo sapiens tissue_or_cell_type: Purified protein; cell-free assay experimental_model: Purified recombinant human CA2 expressed in E. coli; chelation, crystallography, DSC and H/D exchange limitations: Purified recombinant protein; chelation is not dietary deficiency. Approximately 10% zinc remained in the nominal apo preparation. exposure: Chelated CA2 crystallography at 1.26 Å resolution. cross_nutrient: false [zinc-enz-ca2-apo2009] Apo-human carbonic anhydrase II revisited: implications of the loss of a metal in protein structure, stability, and solvent network. (2009). https://pubmed.ncbi.nlm.nih.gov/19583303/ DOI: 10.1021/bi9007512
Complete structured claim and evidence
The events it takes part in
A mechanism often involves more than two components. These are the full events, with every participant and its role.
Situations it appears in
Low-supply and faulty-machinery situations recorded in the chapters where this component plays a part.
In the sources
Preserved passages that mention this component, quoted exactly. Open one to read it in context.
Open hypotheses
Proposed ideas that involve this component. They are labeled as hypotheses and do not change any recorded statement.
This is a research prototype built from draft material. It is not medical advice, and its statements still await verification against the original studies.