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Structure of the gene for uteroferrin
1Roman L. Hruska U.S. Meat Animal Research Center, U.S. Department of Agriculture, Clay Center, Nebraska 68933, USA. vallet@email.marc.usda.gov
DNA and Cell Biology
|December 1, 2000
Summary
The porcine uteroferrin gene structure, unlike previously reported, contains five exons. This revised understanding clarifies its relationship with tartrate-resistant acid phosphatase (TRAP) genes.
Area of Science:
- Genomics
- Molecular Biology
- Comparative Gene Structure
Background:
- The published gene structure for porcine uteroferrin is inconsistent with human and mouse tartrate-resistant acid phosphatase (TRAP) genes.
- Previous studies reported a different structure for the uteroferrin gene, raising questions about its accuracy.
Purpose of the Study:
- To accurately determine and characterize the gene structure of porcine uteroferrin.
- To resolve discrepancies between the published uteroferrin gene structure and related TRAP genes.
Main Methods:
- Polymerase chain reaction (PCR) amplification using porcine genomic DNA.
- Cloning and complete sequencing of the porcine uteroferrin gene from a BAC library.
- Southern blotting of porcine genomic DNA.
Main Results:
- Identified two previously undescribed introns in the porcine uteroferrin gene.
- Sequencing revealed a 2.5 kb gene structure with five exons, aligning with human and mouse TRAP gene structures.
- Southern blot analysis corroborated the obtained sequence data.
Conclusions:
- The corrected porcine uteroferrin gene structure comprises five exons.
- Discrepancies in prior reports are likely due to bacterial artifacts during cloning and recombination events.
- This finding provides a more accurate basis for comparative genomics of TRAP family genes.