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Intraflagellar transport (IFT), which is the bidirectional movement of particles within flagella, is required for flagellar assembly. IFT particles are composed of approximately 16 proteins, which are organized into complexes A and B. We have cloned Chlamydomonas reinhardtii and mouse IFT46, and show that IFT46 is a highly conserved complex B protein in(More)
Mutations in human CEP290 cause cilia-related disorders that range in severity from isolated blindness to perinatal lethality. Here, we describe a Chlamydomonas reinhardtii mutant in which most of the CEP290 gene is deleted. Immunoelectron microscopy indicated that CEP290 is located in the flagellar transition zone in close association with the prominent(More)
Intraflagellar transport (IFT), the bidirectional movement of particles along flagella, is essential for flagellar assembly. The motor for retrograde IFT in Chlamydomonas is cytoplasmic dynein 1b, which contains the dynein heavy chain DHC1b and the light intermediate chain (LIC) D1bLIC. To investigate a possible role for the LIC in IFT, we identified a(More)
Eukaryotic cilia and flagella are vital sensory and motile organelles. The calcium channel PKD2 mediates sensory perception on cilia and flagella, and defects in this can contribute to ciliopathic diseases. Signaling from Pkd2-dependent Ca²+ rise in the cilium to downstream effectors may require intermediary proteins that are largely unknown. To identify(More)
Functional analysis of an individual IFT protein: IFT46 is required for transport of outer dynein arms into flagella. iv Acknowledgments I would like to thank my graduate advisor Dr. George Witman for his guidance, encouragement, and support. He provided me with endless opportunities to develop my scientific thinking and to communicate my work in writing(More)
We have used an insertional mutagenesis approach to generate new C. reinhardtii motility mutants. Of 56 mutants isolated, one is a new allele at the ODA3 locus, called oda3-6. Similar to the previously characterized oda3 alleles, oda3-6 has a slow-jerky swimming phenotype and reduced swimming speed. The oda3-6 mutant fails to assemble the outer dynein arm(More)
Supplementary Fig. 1. Segregation analysis in TCTEX1D2 families. Pedigree and segregation analysis in (a) family UCL82 and (b) INS, both consistent with autosomal recessive inheritance. (c) family UCL4 and (d) genomic PCRs in UCL4 of TCTEX1D2 exon 1 and exon 2 (affected by the deletion) plus exon 4 (not affected by the deletion). Children carrying the(More)
and George Witman. (2003). Oda5p, a novel axonemal protein required for assembly of ; the outer dynein arm and an associated adenylate kinase. Mol. Bioi. Cell. ODACKNOWLEDGMENTS I would like to first thank my advisor, George Witman, PhD , for being an outstanding mentor, scientist and colleague. He provided a work environment that was both productive and(More)
GATA transcription factors are transcriptional regulatory proteins that contain a characteristic type-IV zinc finger DNA-binding domain and recognize the conserved GATA motif in the promoter sequence of target genes. Previous studies demonstrated that plant GATA factors possess critical functions in developmental control and responses to the environment. To(More)
The analysis of individuals with ciliary chondrodysplasias can shed light on sensitive mechanisms controlling ciliogenesis and cell signalling that are essential to embryonic development and survival. Here we identify TCTEX1D2 mutations causing Jeune asphyxiating thoracic dystrophy with partially penetrant inheritance. Loss of TCTEX1D2 impairs retrograde(More)
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