PRDM9: Difference between revisions

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==Function==
==Function==
PRDM9 is thought to mediate the process of [[Recombination_hotspot|meiotic homologous recombination]].<ref name="pmid21460839">{{cite journal | author = Smagulova F, Gregoretti IV, Brick K, Khil P, Camerini-Otero RD, Petukhova GV | title = Genome-wide analysis reveals novel molecular features of mouse recombination hotspots | journal = Nature | volume = 472 | issue = 7343 | pages = 375–8 |date=April 2011 | pmid = 21460839 | doi = 10.1038/nature09869 | pmc=3117304}}</ref>
PRDM9 is thought to mediate the process of [[Recombination hotspot|meiotic homologous recombination]].<ref name="pmid21460839">{{cite journal | author = Smagulova F, Gregoretti IV, Brick K, Khil P, Camerini-Otero RD, Petukhova GV | title = Genome-wide analysis reveals novel molecular features of mouse recombination hotspots | journal = Nature | volume = 472 | issue = 7343 | pages = 375–8 |date=April 2011 | pmid = 21460839 | doi = 10.1038/nature09869 | pmc=3117304}}</ref>


==Recombination hotspots==
==Recombination hotspots==
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*{{cite journal |vauthors=Myers S, Bowden R, Tumian A, etal |title=Drive against hotspot motifs in primates implicates the PRDM9 gene in meiotic recombination. |journal=Science |volume=327 |issue= 5967 |pages= 876–9 |year= 2010 |pmid= 20044541 |doi= 10.1126/science.1182363 }}
*{{cite journal |vauthors=Myers S, Bowden R, Tumian A, etal |title=Drive against hotspot motifs in primates implicates the PRDM9 gene in meiotic recombination. |journal=Science |volume=327 |issue= 5967 |pages= 876–9 |year= 2010 |pmid= 20044541 |doi= 10.1126/science.1182363 }}
*{{cite journal |vauthors=Miyamoto T, Koh E, Sakugawa N, etal |title=Two single nucleotide polymorphisms in PRDM9 (MEISETZ) gene may be a genetic risk factor for Japanese patients with azoospermia by meiotic arrest. |journal=J. Assist. Reprod. Genet. |volume=25 |issue= 11-12 |pages= 553–7 |year= 2008|pmid= 18941885 |doi= 10.1007/s10815-008-9270-x |pmc=2593767}}
*{{cite journal |vauthors=Miyamoto T, Koh E, Sakugawa N, etal |title=Two single nucleotide polymorphisms in PRDM9 (MEISETZ) gene may be a genetic risk factor for Japanese patients with azoospermia by meiotic arrest. |journal=J. Assist. Reprod. Genet. |volume=25 |issue= 11-12 |pages= 553–7 |year= 2008|pmid= 18941885 |doi= 10.1007/s10815-008-9270-x |pmc=2593767}}
*{{cite journal |vauthors=Hussin J, Sinnett D, Casals F, etal |title=Rare allelic forms of PRDM9 associated with childhood leukemogenesis. |journal=Genome Res. |volume=23 |issue= 3 |pages= 419-30 |year= 2013 |pmid= 23222848 |doi= 10.1101/gr.144188.112 }}
*{{cite journal |vauthors=Hussin J, Sinnett D, Casals F, etal |title=Rare allelic forms of PRDM9 associated with childhood leukemogenesis. |journal=Genome Res. |volume=23 |issue= 3 |pages= 419–30 |year= 2013 |pmid= 23222848 |doi= 10.1101/gr.144188.112 }}
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{{refend}}


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[[Category:Transcription factors]]
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Revision as of 08:28, 23 October 2015

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PR domain[note 1] zinc finger protein 9 is a protein that in humans is encoded by the Prdm9 gene.[1] The protein has histone H3K4 trimethyltransferase activity, a KRAB domain, and a DNA-binding domain consisting of multiple tandem C2H2 zinc finger (ZF) domains.[2] PRDM9 specifically trimethylates lysine 4 of histone H3 during meiotic prophase and is essential for proper meiotic progression, but does not have the ability to mono- and dimethylate lysine 4 of histone H3. H3K4 methylation represents a specific tag for epigenetic transcriptional activation which plays a central role in the transcriptional activation of genes during early meiotic prophase.

Function

PRDM9 is thought to mediate the process of meiotic homologous recombination.[3]

Recombination hotspots

In humans and mice, recombination occurs at elevated rates at particular sites along the chromosomes called recombination hotspots. Hotspots are regions of DNA about 1-2kb in length.[4] There are approximately 30,000 to 50,000 hotspots within the human genome corresponding to one for every 50-100kb DNA on average.[4] In humans, the average number of crossover recombination events per hotspot is one per 1,300 meioses, and the most extreme hotspot has a crossover frequency of one per 110 meioses.[4] These hotspots are predicted binding sites for PRDM9 protein.[5]

PRDM9 is a meiosis specific histone methyltransferase and, upon binding to DNA, it catalyzes trimethylation of histone H3 at lysine 4.[6] As a result, local nucleosomes are reorganized. This reorganization is apparently associated with increased probability of recombination.

Notes

  1. ^ positive-regulatory domain

References

  1. ^ "Entrez Gene: PR domain containing 9".
  2. ^ Thomas JH, Emerson RO, Shendure J (2009). "Extraordinary molecular evolution in the PRDM9 fertility gene". PLoS ONE. 4 (12): e8505. doi:10.1371/journal.pone.0008505. PMC 2794550. PMID 20041164.{{cite journal}}: CS1 maint: multiple names: authors list (link) CS1 maint: unflagged free DOI (link) Open access icon
  3. ^ Smagulova F, Gregoretti IV, Brick K, Khil P, Camerini-Otero RD, Petukhova GV (April 2011). "Genome-wide analysis reveals novel molecular features of mouse recombination hotspots". Nature. 472 (7343): 375–8. doi:10.1038/nature09869. PMC 3117304. PMID 21460839.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  4. ^ a b c Myers S, Spencer CC, Auton A, Bottolo L, Freeman C, Donnelly P, McVean G (2006). "The distribution and causes of meiotic recombination in the human genome". Biochem. Soc. Trans. 34 (Pt 4): 526–30. doi:10.1042/BST0340526. PMID 16856851.
  5. ^ de Massy B (2014). "Human genetics. Hidden features of human hotspots". Science. 346 (6211): 808–9. doi:10.1126/science.aaa0612. PMID 25395519.
  6. ^ Baker CL, Kajita S, Walker M, Saxl RL, Raghupathy N, Choi K, Petkov PM, Paigen K (2015). "PRDM9 drives evolutionary erosion of hotspots in Mus musculus through haplotype-specific initiation of meiotic recombination". PLoS Genet. 11 (1): e1004916. doi:10.1371/journal.pgen.1004916. PMC 4287450. PMID 25568937.{{cite journal}}: CS1 maint: unflagged free DOI (link)

Further reading

External links

This article incorporates text from the United States National Library of Medicine, which is in the public domain.