transcription factor
Let an agent explain transcription factors and their families, relay mechanisms, classification and examples from molecular biology references, describe roles in development and disease, and route to entries for specific factors.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify
Researched by: Claude
Purpose and description
Let an agent explain transcription factors and their families, relay mechanisms, classification and examples from molecular biology references, describe roles in development and disease, and route to entries for specific factors.
A protein that binds specific DNA sequences to regulate the transcription of genes, activating or repressing RNA polymerase, classified by DNA-binding domains such as zinc fingers, homeodomains, basic helix-loop-helix, bZIP and Myb domains, with thousands of family members across organisms including plant bZIP factors, PR domain zinc finger proteins and Myb-related proteins; transcription factors control development, cell identity and responses to signals, and their mutations underlie many diseases.
What it is for: Not applicable; a class of proteins.
It can be explain mechanism and families; relay classification; describe roles in development and disease; route to specific factors.
Distinguishing features
Sequence-specific binding
Domain-based families
Regulatory networks
Disease relevance
What it looks like
Not a visible object; proteins with DNA-binding and regulatory domains.
Physical character
human transcription factors: about 1600 count - Lambert et al. 2018
largest human family: C2H2 zinc fingers family - about 700 members
How it is recognised
Sequence-specific DNA-binding regulators of transcription
Zinc finger, homeodomain, bHLH, bZIP, Myb and other families
General transcription factors form the polymerase complex; cofactors do not bind DNA directly
Related models
is a kind of - in registry terms
regulates - of genes
binds - at specific motifs
is classified by - of DNA binding
In practice
Families and kinds
zinc finger transcription factors including C2H2, CCCH and PR domain zinc finger proteins
homeodomain factors
basic helix-loop-helix factors
bZIP factors including plant bZIP families
Myb and Myb-related proteins
nuclear receptors
general transcription factors
Identifiers
GO GO:0003700 DNA-binding transcription factor activity
MeSH D014157 transcription factors
Standards and regulation
Gene Ontology and nomenclature standards
Databases such as JASPAR and TFClass
No regulation of the concept
Failure modes and hazards
Confusing sequence-specific and general transcription factors
Overstating single-factor causation
Stale family counts
Also called
+292
Where this came from
wikidata · CC0 1.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.
Understand What transcription factors are.
Science.
Definition
Definition and mechanism.
Definition
Definition.
- What is a transcription factor, and how does it activate or repress genes? definition
- Is the question about sequence-specific factors, general factors or cofactors? boundary
Families
Families.
Families
Families.
- What are the main families by DNA-binding domain, such as zinc finger, bZIP and Myb? definition
- Which entry fits the specific family or protein? action
Biology Roles.
Science.
Development
Development and identity.
Development
Development.
- How do transcription factors control development, cell identity and reprogramming? provenance
- Which references are standard? provenance
Signals
Signal responses.
Signals
Signals.
- How do factors respond to hormones, stress and signals in animals and plants? provenance
- Which entry fits signal transduction? action
Disease Disease and therapy.
Clinical.
Disease
Disease.
Disease
Disease.
- What diseases arise from transcription factor mutations or dysregulation, in general terms? provenance
- Which sources are cited? provenance
Therapy
Therapeutic targeting.
Therapy
Therapy.
- How are transcription factors targeted or used in therapy and research? provenance
- Which entry fits drug target? action
Context Methods and history.
Context.
Methods
Methods.
Methods
Methods.
- How are transcription factors and their binding sites studied, from ChIP-seq to motif databases? provenance
- Which entry fits ChIP sequencing? action
History
History.
History
History.
- How were transcription factors discovered, from the lac repressor onward? provenance
- Which entry fits the history of molecular biology? action
What the second pass must settle
- Should zinc finger protein and bZIP be separate primary entries?
- How should databases be linked?
- The registry entry has merged aliases naming individual proteins; should they be split off?