bacteriophage lambda
E629012
Bacteriophage lambda is a temperate virus that infects Escherichia coli and serves as a classic model system for studying gene regulation, lysogeny, and molecular genetics.
All labels observed (1)
| Label | Occurrences |
|---|---|
| bacteriophage lambda canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6934380 — 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: bacteriophage lambda Context triple: [Gunther Stent, researchSubject, bacteriophage lambda]
-
A.
Phage Group
The Phage Group was an informal collective of mid-20th-century molecular biologists who used bacteriophages to uncover fundamental principles of genetics and helped lay the foundations of molecular biology.
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B.
A Genetic Switch: Phage Lambda and Higher Organisms
"A Genetic Switch: Phage Lambda and Higher Organisms" is a seminal molecular biology book that explains how gene regulation in bacteriophage lambda illuminates fundamental mechanisms of genetic control in more complex organisms.
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C.
phiC31 integrase system
The phiC31 integrase system is a site-specific recombination tool widely used in genetic engineering to insert DNA precisely into defined genomic locations.
-
D.
TMV
TMV is a deemed university in Pune, India, known for offering a wide range of undergraduate and postgraduate programs with an emphasis on Indian culture, philosophy, and social sciences.
-
E.
TMV
TMV is the stock ticker symbol under which TeamViewer, a global provider of remote connectivity and remote access software, is traded on financial markets.
- 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: bacteriophage lambda Target entity description: Bacteriophage lambda is a temperate virus that infects Escherichia coli and serves as a classic model system for studying gene regulation, lysogeny, and molecular genetics.
-
A.
Phage Group
The Phage Group was an informal collective of mid-20th-century molecular biologists who used bacteriophages to uncover fundamental principles of genetics and helped lay the foundations of molecular biology.
-
B.
A Genetic Switch: Phage Lambda and Higher Organisms
"A Genetic Switch: Phage Lambda and Higher Organisms" is a seminal molecular biology book that explains how gene regulation in bacteriophage lambda illuminates fundamental mechanisms of genetic control in more complex organisms.
-
C.
phiC31 integrase system
The phiC31 integrase system is a site-specific recombination tool widely used in genetic engineering to insert DNA precisely into defined genomic locations.
-
D.
TMV
TMV is a deemed university in Pune, India, known for offering a wide range of undergraduate and postgraduate programs with an emphasis on Indian culture, philosophy, and social sciences.
-
E.
TMV
TMV is the stock ticker symbol under which TeamViewer, a global provider of remote connectivity and remote access software, is traded on financial markets.
- F. None of above. chosen
Statements (61)
| Predicate | Object |
|---|---|
| instanceOf |
Siphoviridae
ⓘ
double-stranded DNA virus ⓘ temperate bacteriophage ⓘ virus ⓘ |
| belongsToFamily | Siphoviridae NERFINISHED ⓘ |
| belongsToOrder | Caudovirales NERFINISHED ⓘ |
| cosSiteLength | 12 nucleotides ⓘ |
| decisionProcess | lysis-lysogeny switch ⓘ |
| discoveredBy | Esther Lederberg NERFINISHED ⓘ |
| discoveryYear | 1950 ⓘ |
| encodes |
CI repressor
ⓘ
CII protein NERFINISHED ⓘ CIII protein ⓘ Cro protein NERFINISHED ⓘ Gam protein NERFINISHED ⓘ Int integrase ⓘ N antiterminator protein ⓘ Q antiterminator protein ⓘ Red recombination proteins ⓘ Xis excisionase ⓘ head and tail structural proteins ⓘ |
| genomeSize | approximately 48.5 kilobase pairs ⓘ |
| genomeType | linear double-stranded DNA ⓘ |
| hasCohesiveEnds | cos sites ⓘ |
| hasGCContent | approximately 50 percent ⓘ |
| hasLifeCycle |
lysogenic cycle
ⓘ
lytic cycle ⓘ |
| hasMorphology | icosahedral head with long noncontractile tail ⓘ |
| hasOperator |
OL operator region
ⓘ
OR operator region ⓘ |
| hasPackagingLimit | approximately 52 kilobase pairs ⓘ |
| hasRegulatoryRegion |
PL promoter
ⓘ
PR promoter ⓘ PRM promoter ⓘ |
| host | Escherichia coli K-12 NERFINISHED ⓘ |
| inducedBy | DNA damage ⓘ |
| inductionMechanism | SOS response mediated CI cleavage ⓘ |
| infects | Escherichia coli NERFINISHED ⓘ |
| integratesInto | E. coli chromosome ⓘ |
| integrationSite |
attB site in E. coli
ⓘ
between gal and bio operons in E. coli ⓘ |
| isTemperate | true ⓘ |
| keyRegulator |
CI repressor
ⓘ
Cro protein NERFINISHED ⓘ |
| keyRegulator |
CII protein
NERFINISHED
ⓘ
N protein ⓘ Q protein NERFINISHED ⓘ |
| prophageForm | integrated into host chromosome ⓘ |
| repressorMaintains | prophage state ⓘ |
| requiresForIntegration | host IHF protein ⓘ |
| requiresForReplication | host DNA replication machinery ⓘ |
| tailType | long noncontractile tail ⓘ |
| taxonRank | species ⓘ |
| usedAs |
cloning vector
ⓘ
phage display vector ⓘ |
| usedAsModelFor |
developmental decision-making in phages
ⓘ
gene regulation ⓘ lysogeny ⓘ molecular genetics ⓘ site-specific recombination ⓘ transcriptional regulation ⓘ |
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: bacteriophage lambda Description of subject: Bacteriophage lambda is a temperate virus that infects Escherichia coli and serves as a classic model system for studying gene regulation, lysogeny, and molecular genetics.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.