5.5kb fragment containing the ninaE gene, in which a premature UAG stop codon replaces residue L309. The truncated protein produced is missing the retinal binding site (Lys319).
The pseudopupil is intermediate in appearance between wild-type and that of ninaE17. ERG is abnormal (no on-transient is produced).
Shows higher photoreceptor R1-R6 activity than ninaE205UAA, ninaE205UAG or ninaE205UGA in an electrophysiological assay.