Wada Y

References (2)

Title : Effects of NDRG1 family proteins on photoreceptor outer segment morphology in zebrafish - Takita_2016_Sci.Rep_6_36590
Author(s) : Takita S , Wada Y , Kawamura S
Ref : Sci Rep , 6 :36590 , 2016
Abstract : Rods and cones are functionally and morphologically distinct. We previously identified N-myc downstream-regulated gene 1b (ndrg1b) in carp as a cone-specific gene. Here, we show that NDRG1b and its paralog, NDRG1a-1, contribute to photoreceptor outer segment (OS) formation in zebrafish. In adult zebrafish photoreceptors, NDRG1a-1 was localized in the entire cone plasma membranes, and also in rod plasma membranes except its OS. NDRG1b was expressed specifically in cones in the entire plasma membranes. In a developing retina, NDRG1a-1 was expressed in the photoreceptor layer, and NDRG1b in the photoreceptor layer plus inner nuclear layer. Based on our primary knockdown study suggesting that both proteins are involved in normal rod and cone OS development, NDRG1a-1 was overexpressed or NDRG1b was ectopically expressed in rods. These forced-expression studies in the transgenic fish confirmed the effect of these proteins on the OS morphology: rod OS morphology changed from cylindrical to tapered shape. These taper-shaped rod OSs were not stained with N,N'-didansyl cystine that effectively labels infolded membrane structure of cone OS. The result shows that rod OS membrane structure is preserved in these taper-shaped OSs and therefore, suggests that tapered OS morphology is not related to the infolded membrane structure in cone OS.
ESTHER : Takita_2016_Sci.Rep_6_36590
PubMedSearch : Takita_2016_Sci.Rep_6_36590
PubMedID: 27811999

Title : Structure, organization, and chromosomal mapping of the human macrophage scavenger receptor gene - Emi_1993_J.Biol.Chem_268_2120
Author(s) : Emi M , Asaoka H , Matsumoto A , Itakura H , Kurihara Y , Wada Y , Kanamori H , Yazaki Y , Takahashi E , Lepert M , Jean-Marc Lalouel JM , Kodama T , Mukai T
Ref : Journal of Biological Chemistry , 268 :2120 , 1993
Abstract : Macrophage scavenger receptors (MSR) mediate the binding, internalization, and processing of a wide range of negatively charged macromolecules. Functional MSR are trimers of two C-terminally different subunits that contain six functional domains. We have cloned an 80-kilobase human MSR gene and localized it to band p22 on chromosome 8 by fluorescent in situ hybridization and by genetic linkage using three common restriction fragment length polymorphisms. The human MSR gene consists of 11 exons, and two types of mRNAs are generated by alternative splicing from exon 8 to either exon 9 (type II) or to exons 10 and 11 (type I). The promoter has a 23-base pair inverted repeat with homology to the T cell element. Exon 1 encodes the 5'-untranslated region followed by a 12-kilobase intron which separates the transcription initiation and the translation initiation sites. Exon 2 encodes a cytoplasmic domain, exon 3, a transmembrane domain, exons 4 and 5, an alpha-helical coiled-coil, and exons 6-8, a collagen-like domain. The position of the gap in the coiled coil structure corresponds to the junction of exons 4 and 5. These results show that the human MSR gene consists of a mosaic of exons that encodes the functional domains. Furthermore, the specific arrangement of exons played a role in determining the structural characteristics of functional domains.
ESTHER : Emi_1993_J.Biol.Chem_268_2120
PubMedSearch : Emi_1993_J.Biol.Chem_268_2120
PubMedID: 8093617
Gene_locus related to this paper: human-LPL