Abstract:
:Using two-dimensional gel electrophoresis, we have analyzed proteins from a plasma membrane-enriched fraction from Phycomyces sporangiophores. Specifically, we have compared gels for night-blind mutants and a wild-type strain to find proteins involved in the early steps of the sensory transduction chain for phototropism. In the gels for a mutant affected in the gene madA, a protein spot [51 kilodaltons (kdal) and pI 6.35] appears that is absent from the wild-type and the other mad mutants. Mutants affect in either of two madB alleles lack a protein spot (57 kdal and pI 6.6) that is present in the wild-type and all other mad strains; this spot probably represents the madB gene product. In some madC mutants, two spots (59 kdal, pI 6.5, with a covalently linked flavin; and 50 kdal, pI 6.4) are absent; however, in other madC strains, one or both of these spots are present. These four protein spots that are altered in madA, madB, and madC mutants may represent component of the photoreceptor complex responsible for phototropism in Phycomyces.
journal_name
Biochem Genetjournal_title
Biochemical geneticsauthors
Pollock JA,Lipson ED,Sullivan DTdoi
10.1007/BF00499081subject
Has Abstractpub_date
1985-06-01 00:00:00pages
379-90issue
5-6eissn
0006-2928issn
1573-4927journal_volume
23pub_type
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journal_title:Biochemical genetics
pub_type: 杂志文章
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pub_type: 杂志文章
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更新日期:1981-02-01 00:00:00
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journal_title:Biochemical genetics
pub_type: 杂志文章
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更新日期:1982-02-01 00:00:00
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