Related Experiment Video
Updated: Jul 16, 2026

Dissection of Hippocampal Dentate Gyrus from Adult Mouse
Published on: November 18, 2009
The mammalian FEN-1 locus: structure and conserved sequence features
Z E Karanjawala1, X Shi, C L Hsieh
1Norris Comprehensive Cancer Center, Department of Pathology, University of Southern California School of Medicine, Los Angeles 90089, USA.
Abstract:
Flap endonuclease 1 (FEN-1) is an enzyme that is very important for DNA replication in all eukaryotes because it cleaves the 5' DNA flaps that arise between Okazaki fragments. In addition, FEN-1 is important for base excision repair and for nonhomologous DNA end joining in all eukaryotes from yeast to human. Here we report the structure and sequence of the murine genomic FEN-1 locus, and we compare it to the human FEN-1 locus. The transcriptional initiation zone of FEN-1 is within a CpG island, and the coding region of FEN-1 is a single exon in both the murine and human genomes. There are striking regions of nucleotide sequence homology within the 5' or 3'UTR or immediately upstream of the 5'UTR. These regions range from 30 to 230 bp. The functions of these conserved sequence blocks could be in transcriptional regulation, or they may represent a gene that overlaps in its initiation zone with FEN-1, but is oriented in the opposite transcriptional direction.
Related Concept Videos
Conserved Binding Sites
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally analyses the...
Cis-regulatory Sequences
Multi-species Conserved Sequences
Although the genome of each species varies greatly from each other, a few sequences are highly conserved. Such conserved DNA...
Conserved Binding Sites
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally analyses the...
General Transcription Factors
Cis-regulatory Sequences

