scholarly journals The nucleotide sequence of the coat protein genes and 3′ non-coding regions of two resistance-breaking tobamoviruses in pepper shows that they are different viruses

1993 ◽  
Vol 131 (1-2) ◽  
pp. 75-88 ◽  
Author(s):  
I. García-Luque ◽  
M. L. Ferrero ◽  
J. M. Rodríguez ◽  
E. Alonso ◽  
A. de la Cruz ◽  
...  
Keyword(s):  
Nucleotide Sequence ◽  
Coat Protein ◽  
Coding Regions ◽  
Resistance Breaking

scholarly journals Nucleotide sequence of the potato leafroll virus coat protein gene

1989 ◽  
Vol 17 (4) ◽  
pp. 1768-1768 ◽  
Author(s):  
B. Prill ◽  
E. Maiss ◽  
U. Timpe ◽  
R. Casper
Keyword(s):  
Nucleotide Sequence ◽  
Coat Protein ◽  
Coat Protein Gene ◽  
Protein Gene ◽  
Potato Leafroll Virus ◽  
Virus Coat Protein ◽  
Virus Coat ◽  
Leafroll Virus

scholarly journals Sequence identity in an early chorion multigene family is the result of localized gene conversion.

Genetics ◽  
1991 ◽  
Vol 128 (3) ◽  
pp. 595-606
Author(s):  
B L Hibner ◽  
W D Burke ◽  
T H Eickbush
Keyword(s):  
Nucleotide Sequence ◽  
Gene Conversion ◽  
Nucleotide Sequence Identity ◽  
Early Period ◽  
Gene Families ◽  
Multigene Families ◽  
Coding Regions ◽  
Sequence Identity ◽  
Isolation And Characterization ◽  
Sequence Exchange

Abstract The multigene families that encode the chorion (eggshell) of the silk moth, Bombyx mori, are closely linked on one chromosome. We report here the isolation and characterization of two segments, totaling 102 kb of genomic DNA, containing the genes expressed during the early period of choriogenesis. Most of these early genes can be divided into two multigene families, ErA and ErB, organized into five divergently transcribed ErA/ErB gene pairs. Nucleotide sequence identity in the major coding regions of the ErA genes was 96%, while nucleotide sequence identity for the ErB major coding regions was only 63%. Selection pressure on the encoded proteins cannot explain this difference in the level of sequence conservation between the ErA and ErB gene families, since when only fourfold redundant codon positions are considered, the divergence within the ErA genes is 8%, while the divergence within the ErB genes (corrected for multiple substitutions at the same site) is 110%. The high sequence identity of the ErA major exons can be explained by sequence exchange events similar to gene conversion localized to the major exon of the ErA genes. These gene conversions are correlated with the presence of clustered copies of the nucleotide sequence GGXGGX, encoding paired glycine residues. This sequence has previously been correlated with gradients of gene conversion that extend throughout the coding and noncoding regions of the High-cysteine (Hc) chorion genes of B. mori. We suggest that the difference in the extent of the conversion tracts in these gene families reflects a tendency for these recombination events to become localized over time to the protein encoding regions of the major exons.

scholarly journals The Determinant of Potyvirus Ability to Overcome the RTM Resistance of Arabidopsis thaliana Maps to the N-Terminal Region of the Coat Protein

2009 ◽  
Vol 22 (10) ◽  
pp. 1302-1311 ◽  
Author(s):  
V. Decroocq ◽  
B. Salvador ◽  
O. Sicard ◽  
M. Glasa ◽  
P. Cosson ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Coat Protein ◽  
Biological Properties ◽  
Terminal Region ◽  
Plum Pox Virus ◽  
Lettuce Mosaic Virus ◽  
Long Distance ◽  
Resistance Breaking ◽  
Viral Determinant ◽  
Long Distance Movement

In Arabidopsis thaliana Columbia (Col-0) plants, the restriction of Tobacco etch virus (TEV) long-distance movement involves at least three dominant RTM (restricted TEV movement) genes named RTM1, RTM2, and RTM3. Previous work has established that, while the RTM-mediated resistance is also effective against other potyviruses, such as Plum pox virus (PPV) and Lettuce mosaic virus (LMV), some isolates of these viruses are able to overcome the RTM mechanism. In order to identify the viral determinant of this RTM-resistance breaking, the biological properties of recombinants between PPV-R, which systemically infects Col-0, and PPV-PSes, restricted by the RTM resistance, were evaluated. Recombinants that contain the PPV-R coat protein (CP) sequence in an RTM-restricted background are able to systemically infect Col-0. The use of recombinants carrying chimeric CP genes indicated that one or more PPV resistance-breaking determinants map to the 5′ half of the CP gene. In the case of LMV, sequencing of independent RTM-breaking variants recovered after serial passages of the LMV AF199 isolate on Col-0 plants revealed, in each case, amino acid changes in the CP N-terminal region, close to the DAG motif. Taken together, these findings demonstrate that the potyvirus CP N-terminal region determines the outcome of the interaction with the RTM-mediated resistance.

Nucleotide Sequence from the Coat Protein Cistron of R17 Bacteriophage RNA

Nature ◽  
1969 ◽  
Vol 223 (5210) ◽  
pp. 1009-1014 ◽  
Author(s):  
J. M. ADAMS ◽  
P. G. N. JEPPESEN ◽  
F. SANGER ◽  
B. G. BARRELL
Keyword(s):  
Nucleotide Sequence ◽  
Coat Protein

scholarly journals Nucleotide sequence determination of guinea-pig casein B mRNA reveals homology with bovine and rat αs1 caseins and conservation of the non-coding regions of the mRNA.

1984 ◽  
Vol 222 (3) ◽  
pp. 561-570 ◽  
Author(s):  
L Hall ◽  
J E Laird ◽  
R K Craig
Keyword(s):  
Nucleotide Sequence ◽  
Guinea Pig ◽  
Nucleotide Sequence Analysis ◽  
Amino Acid Homology ◽  
Mrna Species ◽  
Cdna Sequences ◽  
Coding Regions ◽  
Casein Genes

Nucleotide sequence analysis of cloned guinea-pig casein B cDNA sequences has identified two casein B variants related to the bovine and rat alpha s1 caseins. Amino acid homology was largely confined to the known bovine or predicted rat phosphorylation sites and within the ‘signal’ precursor sequence. Comparison of the deduced nucleotide sequence of the guinea-pig and rat alpha s1 casein mRNA species showed greater sequence conservation in the non-coding than in the coding regions, suggesting a functional and possibly regulatory role for the non-coding regions of casein mRNA. The results provide insight into the evolution of the casein genes, and raise questions as to the role of conserved nucleotide sequences within the non-coding regions of mRNA species.

scholarly journals Nucleotide Sequence of the Genomic RNA of Pepper Mild Mottle Virus, a Resistance-breaking Tobamovirus in Pepper

1991 ◽  
Vol 72 (12) ◽  
pp. 2875-2884 ◽  
Author(s):  
E. Alonso ◽  
I. Garcia-Luque ◽  
A. de la Cruz ◽  
B. Wicke ◽  
M. J. Avila-Rincon ◽  
...  
Keyword(s):  
Nucleotide Sequence ◽  
Mottle Virus ◽  
Genomic Rna ◽  
Pepper Mild Mottle Virus ◽  
Resistance Breaking
Sign in / Sign up

Export Citation Format

Share Document