Human Cx50 Isoleucine177 prevents heterotypic docking and formation of functional gap junction channels with Cx43

RS Wong, H Chen, YX Li, JL Esseltine… - … of Physiology-Cell …, 2024 - journals.physiology.org
The human lens is an avascular organ, and its transparency is dependent on gap junction
(GJ)-mediated microcirculation. Lens GJs are composed of three connexins with Cx46 and …

Connexin46 mutations linked to congenital cataract show loss of gap junction channel function

JD Pal, X Liu, D Mackay, A Shiels… - … of Physiology-Cell …, 2000 - journals.physiology.org
Human connexin46 (hCx46) forms gap junctional channels interconnecting lens fiber cells
and appears to be critical for normal lens function, because hCx46 mutations have been …

The cataract-inducing S50P mutation in Cx50 dominantly alters the channel gating of wild-type lens connexins

AM DeRosa, CH Xia, X Gong… - Journal of cell …, 2007 - journals.biologists.com
Mutations within connexin50 (Cx50) have been linked to various cataract phenotypes. To
determine the mechanism behind cataract formation we used the paired Xenopus oocyte …

Cataract-associated D3Y mutation of human connexin46 (hCx46) increases the dye coupling of gap junction channels and suppresses the voltage sensitivity of …

B Schlingmann, P Schadzek, S Busko… - Journal of bioenergetics …, 2012 - Springer
Abstract Connexin46 (Cx46), together with Cx50, forms gap junction channels between lens
fibers and participates in the lens pump-leak system, which is essential for the homeostasis …

The cataract causing Cx50-S50P mutant inhibits Cx43 and intercellular communication in the lens epithelium

AM DeRosa, G Meşe, L Li, C Sellitto, PR Brink… - Experimental cell …, 2009 - Elsevier
Mutations in Connexin50 (Cx50) cause cataracts in both humans and mice. The mechanism
(s) behind how mutated connexins lead to a variety of cataracts have yet to be fully …

The connexin 46 mutant (V44M) impairs gap junction function causing congenital cataract

L Chen, D Su, S Li, L Guan, C Shi, D Li, S Hu, X Ma - Journal of genetics, 2017 - Springer
Abstract Connexin 46 (Cx46) is important for gap junction channels formation which plays
crucial role in the preservation of lens homeostasis and transparency. Previously, we have …

Properties of two cataract-associated mutations located in the NH2 terminus of connexin 46

JJ Tong, BCH Sohn, A Lam… - … of Physiology-Cell …, 2013 - journals.physiology.org
Mutations in connexin 46 are associated with congenital cataracts. The purpose of this
project was to characterize cellular and functional properties of two congenital cataract …

[HTML][HTML] Functional role of the carboxyl terminal domain of human connexin 50 in gap junctional channels

X Xu, VM Berthoud, EC Beyer… - The Journal of membrane …, 2002 - ncbi.nlm.nih.gov
Gap junction channels formed by connexin 50 (Cx50) are critical for maintenance of lens
transparency. Because the C-terminus of Cx50 can be cleaved post-translationally, we …

Alterations at Arg76 of human connexin 46, a residue associated with cataract formation, cause loss of gap junction formation but preserve hemichannel function

CK Abrams, A Peinado, R Mahmoud… - … of Physiology-Cell …, 2018 - journals.physiology.org
The connexins are members of a family of integral membrane proteins that form gap junction
channels between apposed cells and/or hemichannels across the plasma membranes. The …

Connexin mutation that causes dominant congenital cataracts inhibits gap junctions, but not hemichannels, in a dominant negative manner

EA Banks, MM Toloue, Q Shi, ZJ Zhou… - Journal of cell …, 2009 - journals.biologists.com
The connexin (Cx) 50, E48K, mutation is associated with a human dominant congenital
cataract; however, the underlying molecular mechanism has not been characterized. The …