5.5kb fragment containing the ninaE gene. A premature stop codon (UAA) has been introduced at residue 309. The truncated protein produced thus lacks the retinal binding site (Lys319).
The pseudopupil is similar to wild-type in appearance. ERG is abnormal (no on-transient is produced).
ninaE309UAA is a suppressor of phenotype of norpAP24
Shows higher photoreceptor R1-R6 activity than ninaE205UAA, ninaE205UAG or ninaE205UGA in an electrophysiological assay.