Table 2 of
Guleria, Mol Vis 2007;
13:1657-1665.
Table 2. Mutations in human connexin 46 (GJA3)
Reported mutations in GJA3 associated with different congenital cataract phenotypes in different families.
Amino
acid Cataract Family
change Location type Phenotype description origin Reference
------ ---------------- ----------- ---------------------------------------- ---------- ---------
D3Y NH2-terminal Zonular Progressive zonular pulverulent cataract Hispanic [34]
cytoplasmic loop pulverulent
L11S NH2-terminal Ant-egg Lamellar cataract with dense ant-egg Danish [8]
cytoplasmic loop like structures imbedded in the lens,
primarily confined to the perinuclear
layers and to lesser degree in the fetal
nucleus
V28M First Variable Variable cataract types like total, Indian [24]
transmembrane anterior capsular cataract with
domain posterior cortical opacities in
different individuals
F32L First Nuclear Punctate opacities in the central zone Chinese [26]
transmembrane pulverulent of the lens limited to the embryonal
domain nucleus
R33L First Finely A band of opacities formed by numerous Indian Present
transmembrane granular granular opacities with diffused edges study
domain embryonal on either side involving embryonal
nucleus. Optical section of the lens
shows slit like or hollow discus like
clear area surrounded by thick finely
granular opacity
W45S First Nuclear Progressive nuclear cataract Chinese [35]
extracellular
loop
P59L First Nuclear Coarse punctate opacities located in the American [33]
extracellular punctate central or nuclear region of the lens
loop
N63S First Zonular Coarse and granular opacities in the Caucasian [19]
extracellular pulverulent central zone of the lens. Fine dust-like
loop opacities predominated in the peripheral
zone of the lens.
R76G Boundary of Total Total lens opacification Indian [24]
first
extracellular
loop and second
transmembrane
domain
R76H Boundary of Nuclear Faint lamellar nuclear opacity Australian [36]
first pulverulent surrounding pulverulent nuclear
extracellular opacities, some with fine gold dots or
loop and second haze and some with needle-like
transmembrane peripheral riders
domain
T87M Second Pearl box A bunch of white spots in the embryonal Indian [37]
transmembrane nucleus. The central white spots
domain distributed in a radial manner. The
space between the surface opacity and
central white spots was optically empty
P187L Second Zonular Central dust-like opacity affecting the Caucasian [38]
extracellular pulverulent embryonal, fetal and infantile nucleus
loop of the lens surrounded by snowflake-like
opacities in the anterior and posterior
cortical region of the lens
N188T Second Nuclear Progressive, central pulverulent opacity Chinese [39]
extracellular pulverulent affecting the embryonal, fetal and
loop infantile nucleus of the lens
S380fs COOH-terminal Zonular Coarse and granular opacities in the Caucasian [19]
cytoplasmic loop pulverulent central zone of the lens. Fine dust-like
opacities predominated in the peripheral
zone of the lens
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