X-ray diffraction images of DNA
E312146
X-ray diffraction images of DNA are high-resolution photographic patterns that revealed the helical structure of DNA and were crucial in determining its double-helix model.
All labels observed (1)
| Label | Occurrences |
|---|---|
| X-ray diffraction images of DNA canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2938526 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: X-ray diffraction images of DNA Context triple: [Rosalind Franklin, notableWork, X-ray diffraction images of DNA]
-
A.
X-rays and Crystal Structure
"X-rays and Crystal Structure" is a foundational scientific work by Lawrence Bragg that explains how X-ray diffraction can be used to determine the atomic structure of crystals.
-
B.
The Double Helix (scientific contribution, not the book author)
The Double Helix is the iconic structural model of DNA, revealing its two-stranded, twisted-ladder configuration that underpins modern molecular biology and genetics.
-
C.
Protein and Nucleic Acid Chemistry (historical division)
Protein and Nucleic Acid Chemistry (historical division) was a former research division at the MRC Laboratory of Molecular Biology focused on the structure, function, and interactions of proteins and nucleic acids in molecular biology.
-
D.
Molecular Biology of the Gene
Molecular Biology of the Gene is a landmark molecular biology textbook, co-authored by James Watson, that helped define and systematize modern understanding of DNA structure, gene function, and genetic regulation.
-
E.
Acta Crystallographica Section D
Acta Crystallographica Section D is a peer-reviewed scientific journal focusing on biological crystallography, including the structure determination and analysis of biological macromolecules.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: X-ray diffraction images of DNA Target entity description: X-ray diffraction images of DNA are high-resolution photographic patterns that revealed the helical structure of DNA and were crucial in determining its double-helix model.
-
A.
X-rays and Crystal Structure
"X-rays and Crystal Structure" is a foundational scientific work by Lawrence Bragg that explains how X-ray diffraction can be used to determine the atomic structure of crystals.
-
B.
The Double Helix (scientific contribution, not the book author)
The Double Helix is the iconic structural model of DNA, revealing its two-stranded, twisted-ladder configuration that underpins modern molecular biology and genetics.
-
C.
Protein and Nucleic Acid Chemistry (historical division)
Protein and Nucleic Acid Chemistry (historical division) was a former research division at the MRC Laboratory of Molecular Biology focused on the structure, function, and interactions of proteins and nucleic acids in molecular biology.
-
D.
Molecular Biology of the Gene
Molecular Biology of the Gene is a landmark molecular biology textbook, co-authored by James Watson, that helped define and systematize modern understanding of DNA structure, gene function, and genetic regulation.
-
E.
Acta Crystallographica Section D
Acta Crystallographica Section D is a peer-reviewed scientific journal focusing on biological crystallography, including the structure determination and analysis of biological macromolecules.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
biophysical evidence
ⓘ
experimental data ⓘ scientific image ⓘ |
| allowMeasurementOf |
DNA fiber density
ⓘ
distance between stacked base pairs ⓘ helical repeat distance ⓘ number of base pairs per turn ⓘ |
| analyzedBy |
Fourier methods
ⓘ
Patterson function analysis ⓘ helical diffraction theory ⓘ |
| areInterpretedUsing |
helical diffraction theory of Cochran Crick and Vand
ⓘ
model building constrained by diffraction data ⓘ |
| basedOn |
X-ray diffraction
ⓘ
elastic scattering of X-rays by electrons ⓘ |
| canBeProducedBy |
X-ray free-electron laser experiments
ⓘ
fiber diffraction techniques ⓘ single-crystal X-ray diffraction of DNA fragments ⓘ |
| contributedTo |
The Double Helix (scientific contribution, not the book author)
ⓘ
surface form:
Watson and Crick DNA model
understanding of genetic material ⓘ |
| documentedIn | scientific journals ⓘ |
| historicallyImportantFor |
development of molecular genetics
ⓘ
discovery of DNA double helix ⓘ |
| influenced | design of later nucleic acid experiments ⓘ |
| providedEvidenceFor |
DNA diameter
ⓘ
DNA double helix model ⓘ DNA helical pitch ⓘ DNA repeating units ⓘ base pairing regularity ⓘ |
| relatedTo |
DNA A-form
ⓘ
DNA ⓘ
surface form:
DNA B-form
DNA ⓘ
surface form:
DNA Z-form
|
| require |
X-ray source
ⓘ
crystalline or oriented DNA fibers ⓘ detector or photographic film ⓘ |
| revealed | helical structure of DNA ⓘ |
| showCharacteristic |
X-shaped diffraction pattern
ⓘ
equatorial reflections ⓘ layer lines ⓘ meridional reflections ⓘ |
| storedAs |
archival photographic plates
ⓘ
digital image files ⓘ |
| usedFor |
determining DNA structure
ⓘ
inferring double helix geometry ⓘ measuring helical parameters of DNA ⓘ |
| usedIn |
crystallography
ⓘ
molecular biology ⓘ structural biology ⓘ |
| visualizedAs |
diffraction pattern
ⓘ
photographic plate image ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: X-ray diffraction images of DNA Description of subject: X-ray diffraction images of DNA are high-resolution photographic patterns that revealed the helical structure of DNA and were crucial in determining its double-helix model.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.