Reference Report

Reference
Citation	Isaji, M., Lenartowska, M., Noguchi, T., Frank, D.J., Miller, K.G. (2011). Myosin VI Regulates Actin Structure Specialization through Conserved Cargo-Binding Domain Sites. PLoS ONE 6(8): e22755. (Export to RIS)
FlyBase ID	FBrf0214724
Publication Type	Research paper
PubMed ID	21853045
PubMed Abstract	Actin structures are often stable, remaining unchanged in organization for the lifetime of a differentiated cell. Little is known about stable actin structure formation, organization, or maintenance. During Drosophila spermatid individualization, long-lived actin cones mediate cellular remodeling. Myosin VI is necessary for building the dense meshwork at the cones' fronts. We test several ideas for myosin VI's mechanism of action using domain deletions or site-specific mutations of myosin VI. The head (motor) and globular tail (cargo-binding) domains were both needed for localization at the cone front and dense meshwork formation. Several conserved partner-binding sites in the globular tail previously identified in vertebrate myosin VI were critical for function in cones. Localization and promotion of proper actin organization were separable properties of myosin VI. A vertebrate myosin VI was able to localize and function, indicating that functional properties are conserved. Our data eliminate several models for myosin VI's mechanism of action and suggest its role is controlling organization and action of actin assembly regulators through interactions at conserved sites. The Drosophila orthologues of interaction partners previously identified for vertebrate myosin VI are likely not required, indicating novel partners mediate this effect. These data demonstrate that generating an organized and functional actin structure in this cell requires multiple activities coordinated by myosin VI.
DOI	10.1371/journal.pone.0022755
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Language of Publication	English
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Publication Type	Journal
Abbreviation	PLoS ONE
Title	PLoS ONE
Publication Year	2006-
ISBN/ISSN	1932-6203
Data from Reference
Aberrations (1)
	Df(3R)crb87-5
Alleles (18)
	jar¹ jar³²² jar^{Del-C-Gtail.Hsp83.T:Avic\GFP} jar^{Del-N-Gtail.Hsp83.T:Avic\GFP} jar^{H-GT.Hsp83.T:Avic\GFP} jar^{HN.Hsp83.T:Avic\GFP} jar^{HNP.Hsp83.T:Avic\GFP} jar^{HNPMD.Hsp83.T:Avic\GFP} jar^{Hsp83.T:Avic\GFP} jar^{mLWY.Hsp83.T:Avic\GFP} jar^{mRRL.Hsp83.T:Avic\GFP} jar^{mWKA.Hsp83.T:Avic\GFP} jar^{Scer\UAS.T:Avic\GFP} Scer\GAL4^Act5C.PI Scer\GAL4^bab1-Pgal4-2 Scer\GAL4^{bam.T:Hsim\VP16} Scer\GAL4^tub.PU Sscr\MYO6^{Hsp83.T:Avic\GFP}
Constructs (15)
	P{Act5C-GAL4} P{bam-GAL4:VP16} P{Hsp83-jar.GFP.Del-C-Gtail} P{Hsp83-jar.GFP.Del-N-Gtail} P{Hsp83-jar.GFP.HN.GFP} P{Hsp83-jar.GFP.HNP} P{Hsp83-jar.GFP.HNPMD} P{Hsp83-jar.GFP.mLWY} P{Hsp83-jar.GFP.mRRL} P{Hsp83-jar.GFP.mWKA} P{Hsp83-jar.GFP} P{Hsp83-jar.H-GT.GFP} P{Hsp83-MYO6.GFP} P{tub-GAL4.U} P{UAS-jar.GFP}
Genes (6)
	Arp3 Cortactin jar Scer\GAL4 Sscr\MYO6 T:Avic\GFP
Insertions (1)
	P{GawB}bab1^Pgal4-2
Natural transposons (1)
	P-element