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The nucleotide sequence of a cDNA clone encoding the wheat Em protein.   总被引:10,自引:2,他引:10       下载免费PDF全文
The nucleotide sequence of a cDNA clone isolated from developing wheat embryos and encoding the Em protein is reported. The entire coding region for Em and the 3' non-translated flank are contained within this clone. The amino acid sequence deduced for Em is very rich in glycine (18 mol%) as well as both basic and acidic residues. The molecular weight of the protein is ca. 9,900 daltons. The deduced sequence is supported by direct amino acid sequencing of cyanogen bromide cleavage fragments obtained from purified Em protein. Em is shown by Southern blots to be a product of a gene family of approximately ten members.  相似文献   

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A 1.5 kb clone containing the full-length coding sequence of a type-1 protein phosphatase catalytic subunit has been isolated from a rabbit skeletal muscle cDNA library constructed in lambda gt10. The protein sequence deduced from the cDNA contains 311 residues and has a molecular mass of 35.4 kDa. A single mRNA species at 1.6 kb was visualized by Northern blotting. The type-1 protein phosphatase was strikingly homologous to protein phosphatase 2A, 49% of the amino acids between residues 11 and 280 being identical. The first 10 and last 31 residues were dissimilar. Residues 1-101 of the type-1 protein phosphatase also showed 21% sequence identity with a region of mammalian alkaline phosphatases.  相似文献   

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Nucleotide sequence of a cDNA clone encoding mouse protamine 1   总被引:9,自引:0,他引:9  
The nucleotide sequence of a 404-base cDNA encoding the cysteine-rich, tyrosine-containing mouse protamine has been determined. This insert, isolated from a mouse testis cDNA library, encodes a polypeptide of 50 amino acids of which 28 are arginine, 9 are cysteine, and 3 are tyrosine. The insert contains the complete 3' noncoding region of 151 bases and most of the 5' noncoding region. The predicted amino acid sequence of mouse protamine 1 is about 80% homologous to boar protamine and 67% homologous to bull protamine and contains the central, highly basic domain of four arginine clusters found in the trout protamines. The identification of a cDNA clone for a mouse protamine will facilitate studies of the evolution, regulation, and protein-DNA interaction of this nuclear protein unique to haploid spermatogenic cells.  相似文献   

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T Kamimura  C West  E Beutler 《Gene》1992,118(2):299-300
We report here the nucleotide sequence of a rat cDNA clone encoding a protein homologous to the Reg (regenerating) protein. The encoded protein, designated Reg-2, shows 60%, 78% and 61% similarities with the reported amino acid sequences of the rat, bovine and human proteins, respectively.  相似文献   

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A cDNA clone encoding a rice catalase isozyme.   总被引:1,自引:1,他引:1       下载免费PDF全文
S Morita  M Tasaka  H Fujisawa  T Ushimaru    H Tsuji 《Plant physiology》1994,105(3):1015-1016
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Synthetic oligonucleotides have been used to isolate a 1.85 kb clone containing the full length coding sequence for the catalytic subunit of rabbit skeletal muscle phosphorylase kinase from a cDNA library constructed in lambda gt10. Sequence analysis of the clone predicted an amino acid sequence in agreement with a published primary structure. Inspection of the codon usage revealed a strong preference for G or C nucleotides at the third codon position as found for several other skeletal muscle proteins. This cDNA clone should facilitate identification of functional domains, including the calmodulin-binding site, and investigation of the molecular basis of X-linked phosphorylase kinase deficiencies.  相似文献   

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We have determined the complete sequence of the rat mitochondrial malate dehydrogenase (mMDH) precursor derived from nucleotide sequence of the cDNA. A single synthetic oligodeoxynucleotide probe was used to screen a rat atrial cDNA library constructed in lambda gt10. A 1.2 kb full-length cDNA clone provided the first complete amino acid sequence of pre-mMDH. The 1014 nucleotide-long open reading frame encodes the 314 residue long mature mMDH protein and a 24 amino acid NH2-terminal extension which directs mitochondrial import and is cleaved from the precursor after import to generate mature mMDH. The amino acid composition of the transit peptide is polar and basic. The pre-mMDH transit peptide shows marked homology with those of two other enzymes targeted to the rat mitochondrial matrix.  相似文献   

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