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PMID: 3001642 Published · ppublish English Comparative Study Journal Article Research Support, U.S. Gov't, Non-P.H.S.

Analysis of cloned cDNA and genomic sequences for phytochrome: complete amino acid sequences for two gene products expressed in etiolated Avena.

Nucleic acids research ·Vol. 13 ·No. 23 ·1985-12-09 ·Pages 8543-59

Hershey HP, Barker RF, Idler KB, Lissemore JL, Quail PH

Abstract

Cloned cDNA and genomic sequences have been analyzed to deduce the amino acid sequence of phytochrome from etiolated Avena. Restriction endonuclease site polymorphism between clones indicates that at least four phytochrome genes are expressed in this tissue. Sequence analysis of two complete and one partial coding region shows approximately 98% homology at both the nucleotide and amino acid levels, with the majority of amino acid changes being conservative. High sequence homology is also found in the 5'-untranslated region but significant divergence occurs in the 3'-untranslated region. The phytochrome polypeptides are 1128 amino acid residues long corresponding to a molecular mass of 125 kdaltons. The known protein sequence at the chromophore attachment site occurs only once in the polypeptide, establishing that phytochrome has a single chromophore per monomer covalently linked to Cys-321. Computer analyses of the amino acid sequences have provided predictions regarding a number of structural features of the phytochrome molecule.

MeSH Terms
Amino Acid Sequence Base Sequence Chromosome Mapping Cloning, Molecular DNA/genetics DNA Restriction Enzymes/metabolism Edible Grain/genetics Gene Expression Regulation/radiation effects Genes Light Nucleic Acid Conformation Phytochrome/genetics Plant Proteins/genetics Sequence Homology, Nucleic Acid Solubility
Chemicals
Plant Proteins Phytochrome DNA DNA Restriction Enzymes
Authors & Affiliations
5 authors, click to expand affiliations / ORCID
Hershey H P
Barker R F
Idler K B
Lissemore J L
Quail P H
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Article Info
Journal
Nucleic acids research
Abbr.
Nucleic Acids Res
ISSN
0305-1048
Published
1985-12-09
Pages
8543-59
Language
English
Region
England
NLM ID
0411011
PMCID
PMC322151
Subset
IM
Databases
GENBANK
X03242, X03243, X03244
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