TY - JOUR
T1 - Drosophila kelch is an oligomeric ring canal actin organizer
AU - Robinson, Douglas N.
AU - Cooley, Lynn
PY - 1997/8/25
Y1 - 1997/8/25
N2 - In Drosophila kelch has four protein domains, two of which are found in kelch-family proteins and in numerous nonkelch proteins. In Drosophila, kelch is required to maintain ring canal organization during oogenesis. We have performed a structure-function analysis to study the function of Drosophila kelch. The amino-terminal region (NTR) regulates the timing of kelch localization to the ring canals. Without the NTR, the protein localizes precociously and destabilizes the ring canals and the germ cell membranes, leading to dominant sterility. The amino half of the protein including the BTB domain mediates dimerization. Oligomerization through the amino half of kelch might allow cross-linking of ring canal actin filaments, organizing the inner rim cytoskeleton. The kelch repeat domain is necessary and sufficient for ring canal localization and likely mediates an additional interaction, possibly with actin.
AB - In Drosophila kelch has four protein domains, two of which are found in kelch-family proteins and in numerous nonkelch proteins. In Drosophila, kelch is required to maintain ring canal organization during oogenesis. We have performed a structure-function analysis to study the function of Drosophila kelch. The amino-terminal region (NTR) regulates the timing of kelch localization to the ring canals. Without the NTR, the protein localizes precociously and destabilizes the ring canals and the germ cell membranes, leading to dominant sterility. The amino half of the protein including the BTB domain mediates dimerization. Oligomerization through the amino half of kelch might allow cross-linking of ring canal actin filaments, organizing the inner rim cytoskeleton. The kelch repeat domain is necessary and sufficient for ring canal localization and likely mediates an additional interaction, possibly with actin.
UR - http://www.scopus.com/inward/record.url?scp=0030757226&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0030757226&partnerID=8YFLogxK
U2 - 10.1083/jcb.138.4.799
DO - 10.1083/jcb.138.4.799
M3 - Article
C2 - 9265647
AN - SCOPUS:0030757226
SN - 0021-9525
VL - 138
SP - 799
EP - 810
JO - Journal of Cell Biology
JF - Journal of Cell Biology
IS - 4
ER -