Required for zonula adherens biogenesis and maintenance. Acts via its interaction with KIAA1543/Nezha, which anchors microtubules at their minus-ends to zonula adherens, leading to the recruitment of KIFC3 kinesin to the junctional site.
Epithelial cells contain noncentrosomal microtubules (MTs), whose minus ends are oriented apically. In contrast with the well-known interactions of the minus ends with the centrosome, little is known about the termination site of the noncentrosomal minus ends. Here we show that a population of MT minus ends is anchored at the zonula adherens (ZA), the apical-most part of the cadherin-based adherens junction, via a protein that we have termed Nezha. We initially identified PLEKHA7 as a ZA component and subsequently detected Nezha as a partner for PLEKHA7. Nezha bound MTs at their minus ends and tethered them to the ZA. Furthermore, we found that a minus end-directed motor, KIFC3, was concentrated at the ZA in a PLEKHA7/Nezha/MT-dependent manner; and depletion of any of these proteins resulted in disorganization of the ZA. We propose that the PLEKHA7/Nezha/MT complex regulates the ZA integrity by recruiting KIFC3 to this junctional site.
Epithelial cells contain noncentrosomal microtubules (MTs), whose minus ends are oriented apically. In contrast with the well-known interactions of the minus ends with the centrosome, little is known about the termination site of the noncentrosomal minus ends. Here we show that a population of MT minus ends is anchored at the zonula adherens (ZA), the apical-most part of the cadherin-based adherens junction, via a protein that we have termed Nezha. We initially identified PLEKHA7 as a ZA component and subsequently detected Nezha as a partner for PLEKHA7. Nezha bound MTs at their minus ends and tethered them to the ZA. Furthermore, we found that a minus end-directed motor, KIFC3, was concentrated at the ZA in a PLEKHA7/Nezha/MT-dependent manner; and depletion of any of these proteins resulted in disorganization of the ZA. We propose that the PLEKHA7/Nezha/MT complex regulates the ZA integrity by recruiting KIFC3 to this junctional site.
Epithelial cells contain noncentrosomal microtubules (MTs), whose minus ends are oriented apically. In contrast with the well-known interactions of the minus ends with the centrosome, little is known about the termination site of the noncentrosomal minus ends. Here we show that a population of MT minus ends is anchored at the zonula adherens (ZA), the apical-most part of the cadherin-based adherens junction, via a protein that we have termed Nezha. We initially identified PLEKHA7 as a ZA component and subsequently detected Nezha as a partner for PLEKHA7. Nezha bound MTs at their minus ends and tethered them to the ZA. Furthermore, we found that a minus end-directed motor, KIFC3, was concentrated at the ZA in a PLEKHA7/Nezha/MT-dependent manner; and depletion of any of these proteins resulted in disorganization of the ZA. We propose that the PLEKHA7/Nezha/MT complex regulates the ZA integrity by recruiting KIFC3 to this junctional site.
Epithelial cells contain noncentrosomal microtubules (MTs), whose minus ends are oriented apically. In contrast with the well-known interactions of the minus ends with the centrosome, little is known about the termination site of the noncentrosomal minus ends. Here we show that a population of MT minus ends is anchored at the zonula adherens (ZA), the apical-most part of the cadherin-based adherens junction, via a protein that we have termed Nezha. We initially identified PLEKHA7 as a ZA component and subsequently detected Nezha as a partner for PLEKHA7. Nezha bound MTs at their minus ends and tethered them to the ZA. Furthermore, we found that a minus end-directed motor, KIFC3, was concentrated at the ZA in a PLEKHA7/Nezha/MT-dependent manner; and depletion of any of these proteins resulted in disorganization of the ZA. We propose that the PLEKHA7/Nezha/MT complex regulates the ZA integrity by recruiting KIFC3 to this junctional site.
A reference proteome is a set of protein sequences derived from a complete proteome which constitutes a defined standard for a particular user community. Reference proteomes are manually defined according to a number of criteria. They cover the proteomes of well- studied model organisms and other proteomes of interest for biomedical and biotechnological research. Reference proteomes have been selected to provide broad coverage of the tree of life, and constitute a representative cross-section of the taxonomic diversity to be found within UniProtKB.