Abstract
We isolated a cDNA that encodes the bovine brain γ-aminobutyrate transaminase (GABA-T; EC 2.6.1.19) from the λgt 11 cDNA library, which showed a high degree of sequence similarity to the corresponding enzymes from various sources. Northern blot analysis revealed two differentially expressed GABA-T transcripts of approximately 2.0 and 6.0 kb in the bovine tissues. Southern blot analysis indicates that the two GABA-T transcripts are encoded in a greater-than 10-kb, single-copy gene. Bovine GABA-T cDNA was expressed in E. coli using the pGEX bacterial-expression vector system. The overexpressed GABA-T was enzymatically active after purification, and it had very similar kinetic parameters when compared with those of other mammalian GABA-Ts.
Original language | English |
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Pages (from-to) | 91-96 |
Number of pages | 6 |
Journal | Molecules and Cells |
Volume | 12 |
Issue number | 1 |
State | Published - 31 Aug 2001 |
Keywords
- cDNA Library
- GABA-T
- Northern Blot
- Southern Hybridization