probable 28S rRNA (cytosine-C(5))-methyltransferase, NOP2/Sun domain family, member 5A, NSUN5A, NOP2/Sun RNA methyltransferase family member 5, WBSCR20, NOL1-related protein, p120, 28S rRNA (cytosine-C(5))-methyltransferase, Williams Beuren syndrome chromosome region 20A, Williams-Beuren syndrome chromosomal region 20A protein