Her team came up with the eye drop idea after finding that children with a genetically inherited form of cataracts shared a mutation that stopped the production of lanosterol, an important steroid in the body.
They also found that unrelated patients with the same condition had different mutations that stopped GPR54 from doing its job.
Mutations that stopped this cord formation also prevented BCG from killing infected mice, they report in the April Molecular Cell.
Of the 54 identified addition genes, 9 were caused by a point mutation that destroyed the stop codon and 45 were caused by a frameshift mutation upstream of the stop codon.
Most probably, both ORFs were generated as the result of a point mutation that introduced a stop codon in SARI_02719.
p53[11-1B-1] is a point mutation that introduces a stop codon at nucleotide residue 211, and is predicted to yield a 70AA truncated protein ("M").
Only 7 out of the 12 populations studied showed changes in their genomic sequence, which included four reversions (17% of the changes), one mutation that eliminated a stop codon in nef coding region of virus H (Table 1) and a common mutation in the 5'LTR in three viruses, as described [4].
TP53 R110 fs*13 is a frame shift deleterious mutation that produced a stop codon at position 122 (nucleotide 366) of TP53 with the loss of the protein.
Only four strains exhibit any variants in sad-2, including two strains, FGSC 821 and FGSC 3921, which feature a nonsense mutation that causes a stop codon at amino acid position 208 out of 1098.
In extreme cases, where an extension is universally advantageous, a mutation that changes a stop codon to a sense codon might become fixed, resulting in a constitutively extended gene.
