Display Settings:

Format

Send to:

Choose Destination
See comment in PubMed Commons below
Nucleic Acids Res. 2000 Sep 15;28(18):3666-73.

Human RNA lariat debranching enzyme cDNA complements the phenotypes of Saccharomyces cerevisiae dbr1 and Schizosaccharomyces pombe dbr1 mutants.

Author information

  • 1Department of Biochemistry, Inha University College of Medicine, Inchon, Republic of Korea, Clinical Research Center, Samsung Biomedical Research Institute, 50 Ilwon Dong, Kangnam Ku, Seoul 135-230, Republic of Korea.

Abstract

The cDNA encoding the human RNA lariat debranching enzyme (hDBR1) was identified and cloned by searching the Expressed Sequence Tag (EST) database and screening a HeLa cDNA library, based on predicted amino acid sequence homologies with the Saccharomyces cerevisiae, Schizosaccharomyces pombe and Caenorhabditis elegans debranching enzymes. The hDBR1 cDNA expressed in Escherichia coli showed debranching activity in vitro and was also shown to be functional in an interspecies specific complementation experiment. hDBR1 cDNA in a S. cerevisiae expression vector complemented the intron accumulation phenotype of a S. cerevisiae dbr1 null mutant. Integration of the cDNA for hDBR1 into the ura4 locus of S. pombe also complemented both the intron accumulation and slow growth phenotypes of a S. pombe dbr1 null mutant strain. Comparison of the amino acid sequence of hDBR1 with the other DBR protein sequences showed several conserved regions, with 40, 44 and 43% identity to the S. cerevisiae, S. pombe and C. elegans debranching enzymes, respectively.

PMID:
10982890
[PubMed - indexed for MEDLINE]
PMCID:
PMC110720
Free PMC Article

Images from this publication.See all images (6)Free text

Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for HighWire Icon for PubMed Central
    Loading ...
    Write to the Help Desk