Isolation of the human ePAB and ePABP2 cDNAs and analysis of the expression patterns

  • N. Sakugawa
  • T. Miyamoto
  • H. Sato
  • M. Ishikawa
  • M. Horikawa
  • H. Hayashi
  • M. Ishikawa
  • K. Sengoku



Identification of the unique genes playing critical roles in human embryo cleavage.


Isolation of human ePAB cDNA using human ovary cDNA libraries and mouse ePAB amino acid sequences, followed by analysis of its expression pattern in various adult tissues and stages during early oocyte development excluding ePABP2.


Human ePAB encodes a 330-aa protein and is located on chromosome 20q12-q13.1. The amino acid sequence is 72% homologous with that of mouse ePab. Human ePAB has only three RRMs and lacks a PABP domain; the expression pattern is nonspecific in adult tissues and detected in all stages, from oocyte to blastocyst. Human ePABP2 encodes a 282-aa protein and is located on chromosome 16q24.3. The amino acid sequence is 68% homologous with mouse ePabp2.


We identified human ePAB and ePABP2 cDNA. Human ePAB cDNA is not expressed specific to the ovary. Biological discrepancies exist between the human and the mouse.


Cleavage Embryo ePAB ePABP2 


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Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • N. Sakugawa
    • 1
  • T. Miyamoto
    • 1
  • H. Sato
    • 1
  • M. Ishikawa
    • 1
  • M. Horikawa
    • 1
  • H. Hayashi
    • 1
  • M. Ishikawa
    • 1
  • K. Sengoku
    • 1
  1. 1.Department of Obstetrics and GynecologyAsahikawa Medical CollegeAsahikawaJapan

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