Abstract
Cytotoxic T lymphocytes (CTLs) and natural killer/lymphokine-activated cells produce granzymes, a family of serine esterase proteins located in cytoplasmic granules. These might be involved in different cytotoxic pathways. We report the structural organization of the human gene encoding granzyme B (hCTLA-1). A 4.75-kb genomic DNA fragment containing all the sequences of granzyme B-encoding cDNA clones has been sequenced. The gene is composed of five exons and four introns. A comparison with the genomic organization of murine CCP1/CTLA-1 showed very similar structure and a 76% nucleotide homology in the coding sequences. This suggests that both genes may have a common ancestor. No typical regulatory element was detected in the 1160 bp upstream from the ATG start codon. The detection of a second locus related to hCTLA-1 is also described.
Original language | English |
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Pages (from-to) | 265-271 |
Number of pages | 7 |
Journal | Gene |
Volume | 87 |
Issue number | 2 |
DOIs | |
Publication status | Published - 15 Mar 1990 |
Keywords
- Recombinant DNA
- T lymphocyte
- cloning
- cytotoxicity
- perforin
- phage λ vector
- plasmid
- serine esterase