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Remote homologue identification of Drosophila GAGA factor in mouse.


ABSTRACT: GAGA factor (GAF) is involved in both gene activation and gene repression and plays a role in the modulation of chromatin structure. In Drosophila, Trithroax like (Trl) gene encodes the DNA binding protein called GAGA factor (GAF). Trl-GAF binds to GAGA sites through its C2H2 zinc finger domain and has an N-terminal BTB/POZ domain. Identification of Trl-GAF homologue in mouse helps in deeper understanding of the mechanism and function. Conventional alignment tools such as BLAST and FASTA cannot identify homologues in mouse genome as their sequence identity is below 30%. In the present study, various sequence and structure analyses were followed for the detection of remote homologues of Drosophila GAGA FACTOR in mouse to identify as Zbtb3. Through homology modeling and docking approach, the zinc finger region of mouse Zbtb3 showed conserved residues and favorable DNA binding sites with GAGA sites similar to that of Drosophila GAGA FACTOR.

SUBMITTER: Kumar S 

PROVIDER: S-EPMC3163929 | biostudies-literature | 2011

REPOSITORIES: biostudies-literature

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Remote homologue identification of Drosophila GAGA factor in mouse.

Kumar Suresh S  

Bioinformation 20110820 1


GAGA factor (GAF) is involved in both gene activation and gene repression and plays a role in the modulation of chromatin structure. In Drosophila, Trithroax like (Trl) gene encodes the DNA binding protein called GAGA factor (GAF). Trl-GAF binds to GAGA sites through its C2H2 zinc finger domain and has an N-terminal BTB/POZ domain. Identification of Trl-GAF homologue in mouse helps in deeper understanding of the mechanism and function. Conventional alignment tools such as BLAST and FASTA cannot  ...[more]

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