PUBLICATION
Isolation and characterization of GT335, a novel human gene conserved in Escherichia coli and mapping to 21q22.3
- Authors
- Lafrenière, R.G., Rochefort, D.L., Kibar, Z., Fon, E.A., Han, F., Cochius, J., Kang, X., Baird, S., Korneluk, R.G., Andermann, E., Rommens, J.M., and Rouleau, G.A.
- ID
- ZDB-PUB-031001-16
- Date
- 1996
- Source
- Genomics 38(3): 264-272 (Journal)
- Registered Authors
- Keywords
- none
- MeSH Terms
-
- Sequence Homology, Amino Acid
- Cosmids/genetics
- Base Sequence
- Proteins*
- Blotting, Southern
- DNA, Complementary/genetics
- Homeodomain Proteins*
- Molecular Sequence Data
- Polymorphism, Single-Stranded Conformational
- Basic Helix-Loop-Helix Transcription Factors
- Amino Acid Sequence
- Genes*
- Zebrafish/genetics
- Gene Expression
- Muscle Proteins/genetics*
- Chromosome Mapping
- RNA Splicing
- Humans
- Sequence Alignment
- Chromosomes, Human, Pair 21/genetics*
- Polymerase Chain Reaction
- Consensus Sequence
- Animals
- Escherichia coli/genetics*
- PubMed
- 8975701 Full text @ Genomics
Citation
Lafrenière, R.G., Rochefort, D.L., Kibar, Z., Fon, E.A., Han, F., Cochius, J., Kang, X., Baird, S., Korneluk, R.G., Andermann, E., Rommens, J.M., and Rouleau, G.A. (1996) Isolation and characterization of GT335, a novel human gene conserved in Escherichia coli and mapping to 21q22.3. Genomics. 38(3):264-272.
Abstract
As part of efforts to identify candidate genes for disorders mapped to 21q22.3, we have constructed a 405-kb cosmid contig encompassing five tightly linked markers mapping to this region. A subset of these cosmids was used to identify cDNA fragments by the method of hybrid selection. We present here the cDNA sequence of one such gene (GT335) mapping to this region. The gene is expressed as a 1.7-kb transcript predominantly in heart and skeletal muscle, potentially displays alternate splicing, and is predicted to encode a protein 268 amino acids in length. GT335 spans an estimated 13 kb of genomic DNA and is split into seven exons. Five of the six introns conform to the GT . . . AG consensus for intronic splice junctions; the sixth contains nonconventional (AT . . . AC) intronic junctions. We screened this gene for single-basepair mutations using single-strand conformation polymorphism and sequence analysis of both cDNA and genomic DNA from a number of unrelated individuals and have identified several sequence variations, two of which cause conservative amino acid substitutions. This gene is well conserved evolutionarily, with homologs identified in zebrafish and Escherichia coli, suggesting that it plays an important role in basic cellular metabolism.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping