Nucleotide sequence of AKV murine leukemia virus

Area of Science:

• Virology
• Molecular Biology
• Genomics

Background:

• AKV (A murine leukemia virus) is an endogenous retrovirus.
• It is a parent to oncogenic mink cell focus-forming viruses found in AKR mice.
• Understanding AKV's genetic makeup is crucial for studying leukemogenesis.

Purpose of the Study:

• To determine and report the full nucleotide sequence of the AKV genome.
• To identify and analyze key genetic features, including regulatory elements.
• To compare AKV's sequence with related murine leukemia viruses.

Main Methods:

• Sequencing of the infectious molecular clone AKR-623.
• Bioinformatic analysis of the 8,374-nucleotide sequence.
• Comparative sequence analysis of 5' and 3' regions.

Main Results:

• The complete 8,374-nucleotide sequence of AKV was elucidated.
• The 5'-leader sequence lacks an AUG codon, suggesting gPr80gag is non-essential for replication.
• A potential RNA secondary structure near the gag-pol amber codon may regulate gene expression.

Conclusions:

• The AKV genome sequence provides a comprehensive resource for retroviral research.
• Novel insights into AKV replication and gene regulation mechanisms were gained.
• Comparative genomic analysis highlights conserved and divergent features among murine leukemia viruses.