A novel marker for the platyfish (Xiphophorus maculatus) W chromosome is derived from a Polinton transposon

a.
Biofuture Research Group, Physiologische Chemie I, Biozentrum, University of Würzburg, Würzburg 97074, Germany
b.
Hubei Key Laboratory of Genetic Regulation and Integrative Biology, College of Life Science, Huazhong Normal University, Wuhan 97074, China
c.
Institut für Zoologie, Technische Universität Dresden, Dresden 01062, Germany
d.
Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, Institut Fédératif Biosciences Gerland Lyon Sud, Université Lyon 1, CNRS, INRA, Ecole Normale Supérieure de Lyon, Lyon 69364, France

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Corresponding author: E-mail address: qczhou@mail.ccnu.edu.cn (Qingchun Zhou); E-mail address: Jean-Nicolas.Volff@ens-lyon.fr (Jean-Nicolas Volff)

摘要

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Abstract: A consensus sequence, encoding a putative DNA polymerase type B derived from a Polinton transposon, was assembled from the sex determination region of Xiphophorus maculatus. This predicted protein, which is 1,158 aa in length, contains a DNA_pol_B_2 domain and a DTDS motif. The DNA polymerase type B gene has about 10 copies in the haploid X. maculatus genome with one Y-specific copy. Interestingly, it has specific copies on the W chromosome in the X. maculatus Usumacinta strain (sex determination with female heterogamety), which represent new markers for this type of sex chromosome in platyfish. This marker with W- and Y-specific copies suggests relationship between different types of gonosomes and allows comparing male and female heterogameties in the platyfish. Further molecular analysis of the DNA polymerase type B gene in X. maculatus will shed new light on the evolution of sex chromosomes in platyfish.
- DNA polymerase type B /
- chromosome marker /
- Xiphophorus maculatus

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doi: 10.1016/S1673-8527(09)60036-9

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A novel marker for the platyfish (Xiphophorus maculatus) W chromosome is derived from a Polinton transposon

Corresponding author: E-mail address: qczhou@mail.ccnu.edu.cn (Qingchun Zhou); E-mail address: Jean-Nicolas.Volff@ens-lyon.fr (Jean-Nicolas Volff)

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doi: 10.1016/S1673-8527(09)60036-9

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A novel marker for the platyfish (Xiphophorus maculatus) W chromosome is derived from a Polinton transposon

Corresponding author: E-mail address: qczhou@mail.ccnu.edu.cn (Qingchun Zhou); E-mail address: Jean-Nicolas.Volff@ens-lyon.fr (Jean-Nicolas Volff)

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