Isolation and initial characterization of a novel zinc finger gene, DNMT3L, on 21q22.3, related to the cytosine-5-methyltransferase 3 gene family

Genomics. 2000 May 1;65(3):293-8. doi: 10.1006/geno.2000.6168.


We have isolated the DNMT3L gene that is related to the cytosine-5-methyltransferase 3 (DNMT3) family. The gene is located on chromosome 21q22.3 between the AIRE and the KIAA0653 genes and spans approximately 16 kb of genomic sequence. The encoded protein of 387 amino acids has a cysteine-rich region containing a novel-type zinc finger domain that is conserved in DNMT3A and DNMT3B but also in ATRX, a member of the SNF2 protein family. The novel domain, called an ADD (ATRX, DNMT3, DNMT3L)-type zinc finger, contains two subparts: a C2C2 and an imperfect PHD zinc finger. Expression of the DNMT3L mRNA was not detectable by Northern blotting; however, RT-PCR amplification revealed that it is expressed at low levels in several tissues including testis, ovary, and thymus.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amino Acid Sequence
  • Animals
  • Chromosome Mapping
  • Chromosomes, Human, Pair 21 / genetics*
  • DNA (Cytosine-5-)-Methyltransferases / chemistry
  • DNA (Cytosine-5-)-Methyltransferases / genetics*
  • DNA (Cytosine-5-)-Methyltransferases / metabolism
  • DNA Methyltransferase 3A
  • Humans
  • Mice
  • Models, Molecular
  • Molecular Sequence Data
  • Protein Conformation
  • Protein Structure, Tertiary
  • Sequence Alignment
  • Zinc Fingers / genetics*


  • DNMT3A protein, human
  • Dnmt3a protein, mouse
  • DNMT3L protein, human
  • Dnmt3l protein, mouse
  • DNA (Cytosine-5-)-Methyltransferases
  • DNA Methyltransferase 3A

Associated data

  • GENBANK/AF194032