Uploaded January 2025 | Updated September 2026, 19 hours ago
In this video, we look at how the oestrogen receptor acts as a transcription factor. First we explore what is meant by transcription factors and how transcription factors activate transcription of genes. We then look at the oestrogen receptor and how the shape of the oestrogen receptor changes when oestrogen binds. Finally, we look at how the oestrogen receptor acts as a transcription factor.
Image credits:
Human chromosomes
commons.wikimedia.org/wiki/File:Human_karyotype_(263_17)_Karyotype_Human,_45,XY_t13-14.jpg
Doc. RNDr. Josef Reischig, CSc., CC BY-SA 3.0 creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons
Insulin
commons.wikimedia.org/wiki/File:Insulin_struct.png
User:AtikaAtikawa, CC BY-SA 4.0 creativecommons.org/licenses/by-sa/4.0, via Wikimedia Commons
Antibody
commons.wikimedia.org/wiki/File:Antibody_IgG1_surface.png
Tokenzero, CC BY-SA 4.0 creativecommons.org/licenses/by-sa/4.0, via Wikimedia Commons
Oestrogen
commons.wikimedia.org/wiki/File:Estradiol.svg
NEUROtiker, Public domain, via Wikimedia Commons
DNA (modified as part of image of cell)
commons.wikimedia.org/wiki/File:DNA_2_--_Smart-Servier.png
Laboratoires Servier, CC BY-SA 3.0 creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons
In this video, we look at how the oestrogen receptor acts as a transcription factor. First we explore what is meant by transcription factors and how transcription factors activate transcription of genes. We then look at the oestrogen receptor and how the shape of the oestrogen receptor changes when oestrogen binds. Finally, we look at how the oestrogen receptor acts as a transcription factor.
Image credits:
Human chromosomes
commons.wikimedia.org/wiki/File:Human_karyotype_(263_17)_Karyotype_Human,_45,XY_t13-14.jpg
Doc. RNDr. Josef Reischig, CSc., CC BY-SA 3.0 creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons
Insulin
commons.wikimedia.org/wiki/File:Insulin_struct.png
User:AtikaAtikawa, CC BY-SA 4.0 creativecommons.org/licenses/by-sa/4.0, via Wikimedia Commons
Antibody
commons.wikimedia.org/wiki/File:Antibody_IgG1_surface.png
Tokenzero, CC BY-SA 4.0 creativecommons.org/licenses/by-sa/4.0, via Wikimedia Commons
Oestrogen
commons.wikimedia.org/wiki/File:Estradiol.svg
NEUROtiker, Public domain, via Wikimedia Commons
DNA (modified as part of image of cell)
commons.wikimedia.org/wiki/File:DNA_2_--_Smart-Servier.png
Laboratoires Servier, CC BY-SA 3.0 creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons







![GCSE Biology Revision Digestive Enzymes
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In this video, we look at the specific enzymes found in the digestive system. We start by looking at the lock and key theory which explains why enzymes are specific. We then look at each of the three enzymes in digestion.
This video is based on the AQA spec. This video may be appropriate for iGCSE / O Level Biology. Please consult your specification. The Amazon link above is an affiliate link. This provides a small commission which helps to support freesciencelessons. The cost remains the same to you. If you prefer not to use this, you can search Amazon for the Freesciencelessons workbooks.
Deliberate Thought by Kevin MacLeod is licensed under a Creative Commons Attribution licence (https://creativecommons.org/licenses/by/4.0/)
Source: http://incompetech.com/music/royalty-free/?keywords=deliberate+thought
Artist: http://incompetech.com/
Image credits:
Human digestive system Lozzaaa [Public domain], via Wikimedia Commons GCSE Biology Revision Digestive Enzymes](https://i.ytimg.com/vi/ypHpbHfDJsA/mqdefault.jpg)
