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  • 1
    ISSN: 1617-4623
    Keywords: Kinesin-related gene ; Gene family ; Arabidopsis thaliana ; Nucleotide sequence ; Secondary structure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A gene family, designated kat, has been characterized in Arabidopsis thaliana by genomic Southern hybridization and nucleotide sequencing analysis. The kat gene family includes at least five members, named katA, katB, katC, katD and katE, whose products share appreciable sequence similarities in their presumptive ATP-binding and microtubule-binding motifs with known kinesin-like proteins. The carboxyl-terminal region of the KatA protein deduced from the nucleotide sequence of the cDNA clone has considerable homology with the mechanochemical motor domain of the kinesin heavy chain. The predicted secondary structure of the KatA protein indicates two globular domains separated by a long a helical coiled coil with heptad repeat structures, such as are commonly found in kinesin-like proteins.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-2242
    Keywords: Rice ; Chloroplast DNA ; Physical map ; Restriction pattern
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary By homogenizing rice leaves in liquid nitrogen, it was possible to isolate intact chloroplasts and, subsequently, pure rice chloroplast DNA from the purified chloroplasts. The DNA was digested by several restriction enzymes and fragments were fractionated by agarose gel electrophoresis. The sum of the fragment sizes generated by the restriction enzymes showed that the total length of the DNA is 130 kb. A circular physical map of fragments, generated by digestion with SalI, PstI, and PvuII, has been constructed. The circular DNA contains two inverted repeats of about 20 kb separated by a large, single copy region of about 75 kb and a short, single copy region of about 15 kb. The location of the gene for the large subunit of ribulose 1,5-bisphosphate carboxylase (Fraction I protein) and the 32 KD photosystem II reaction center gene were determined by using as probes tobacco chloroplast DNAs containing these genes. Rice chloroplast DNA differs from chloroplast DNAs of wheat and corn as well as from dicot chloroplast DNAs by having the 32 KD gene located 20 kb removed from the end of an inverted repeat instead of close to the end, as in other plants.
    Type of Medium: Electronic Resource
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