• Title/Summary/Keyword: full-length cDNA

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Development of transgenic sweet potato producing human lactoferrin (인체 락토페린 생산 형질전환 고구마 개발)

  • Min, Sung-Ran;Kim, Jae-Wha;Jeong, Won-Joong;Lee, Young-Bok;Liu, Jang R.
    • Journal of Plant Biotechnology
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    • v.36 no.3
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    • pp.224-229
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    • 2009
  • Human lactoferrin is an iron-binding glycoprotein with many biological activities, including the protection against microbial and virus infection and stimulation of the immune system. We introduced a human lactoferrin (hLf) cDNA under the control of 35S promoter into sweet potato by particle bombardment. Transgenic plants were regenerated via somatic embryogenesis. Transgenic plants were produced typical tuberous roots in soil. PCR, Southern and northern analyses confirmed that the hLf cDNA was incorporated into the plant genome and was properly expressed in plants. Western blot analysis showed that the 80 kDa full length hLf protein was produced in transgenic tuberous roots. Overall results indicated that sweet potato would be an excellent host to produce human therapeutic proteins.

Structure and Tissue Distribution of a Trinucleotide-Repeat-containing Gene (cag-3) Expressed Specifically in the Mouse Brain

  • Ji, Jin Woo;Yang, Hye Lim;Kim, Sun Jung
    • Molecules and Cells
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    • v.20 no.3
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    • pp.348-353
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    • 2005
  • Using in silico approaches and RACE we cloned a full length trinucleotide (CAG) repeat-containing cDNA (cag-3). The cDNA is 2478 bp long and the deduced polypeptide consists of 140 amino acids of which 73 are glutamines. The genomic sequence spans approximately 79 kb on mouse chromosome 7 and the gene is composed of four exons. Standard and real-time PCR analyses of several mouse tissues showed that the gene is exclusively expressed in the brain and is not detected in embryonic stages. Within the brain, it is expressed throughout the forebrain region with predominant expression in the hypothalamus and olfactory bulb and very low levels in the mid- and hindbrain.

Molecular Cloning and Characterization of a New cDNA Encoding Hyoscyamine 6β-hydroxylase from Roots of Anisodus acutangulus

  • Kai, Guoyin;Chen, Junfeng;Li, Li;Zhou, Genyu;Zhou, Limin;Zhang, Lei;Chen, Yuhui;Zhao, Linxia
    • BMB Reports
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    • v.40 no.5
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    • pp.715-722
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    • 2007
  • A new full-length cDNA encoding hyoscyamine $6\beta$-hydroxylase (designated as aah6h, GenBank Accession No. EF187826), which catalyzes the last committed step in the scopolamine biosynthetic pathway, was isolated from young roots of Anisodus acutangulus by rapid amplification of cDNA ends (RACE) for the first time. The full-length cDNA of aah6h was 1380 bp and contained a 1035 bp open reading frame (ORF) encoding a deduced protein of 344 amino acid residues. The deduced protein had an isoelectric point (pI) of 5.09 and a calculated molecular mass of about 38.7 kDa. Sequence analyses showed that AaH6H had high homology with other H6Hs isolated from some scopolamine-producing plants such as Hyoscyamus niger, Datura metel and Atropa belladonna etc. Bioinformatics analyses results indicated AaH6H belongs to 2-oxoglutarate-dependent dioxygenase superfamily. Phylogenetic tree analysis showed that AaH6H had closest relationship with H6H from A. tanguticus. Southern hybridization analysis of the genomic DNA revealed that aah6h belonged to a multi-copy gene family. Tissue expression pattern analysis firstly founded that aah6h expressed in all the tested tissues including roots, stems and leaves and indicated that aah6h was a constitutive-expression gene, which was the first reported tissue-independent h6h gene compared to other known h6h genes.

Molecular Characterization and Tissue-specific Expression of a Novel FKBP38 Gene in the Cashmere Goat (Capra hircus)

  • Zheng, X.;Hao, X.Y.;Chen, Y.H.;Zhang, X.;Yang, J.F.;Wang, Z.G.;Liu, D.J.
    • Asian-Australasian Journal of Animal Sciences
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    • v.25 no.6
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    • pp.758-763
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    • 2012
  • As a member of a subclass of immunophilins, it is controversial that FKBP38 acts an upstream regulator of mTOR signaling pathway, which control the process of cell-growth, proliferation and differentiation. In order to explore the relationship between FKBP38 and mTOR in the Cashmere goat (Capra hircus) cells, a full-length cDNA was cloned (GenBank accession number JF714970) and expression pattern was analyzed. The cloned FKBP38 gene is 1,248 bp in length, containing an open reading frame (ORF) from nucleotide 13 to 1,248 which encodes 411 amino acids, and 12 nucleotides in front of the initiation codon. The full cDNA sequence shares 98% identity with cattle, 94% with horse and 90% with human. The putative amino acid sequence shows the higher homology which is 98%, 97% and 94%, correspondingly. The bioinformatics analysis showed that FKBP38 contained a FKBP_C domain, two TPR domains and a TM domain. Psite analysis suggested that the ORF encoding protein contained a leucine-zipper pattern and a Prenyl group binding site (CAAX box). Tissue-specific expression analysis was performed by semi-quantitative RT-PCR and showed that the FKBP38 expression was detected in all the tested tissues and the highest level of mRNA accumulation was detected in testis, suggesting that FKBP38 plays an important role in goat cells.

Cloning and Expression Characteristics of Pharbitis nil COP1 (PnCOP1) During the Floral Induction

  • Kim, Yun-Hee;Kim, Seong-Ryong;Heo, Yoon-Kang
    • Journal of Photoscience
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    • v.12 no.1
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    • pp.1-9
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    • 2005
  • The ubiquitin E3 ligase COP1 (Constitutive Photomorphogenesis 1) is a protein repressor of photomorphogenesis in Arabidopsisplants, and it found in various organisms, including animals. The COP1 protein regulates the stability of many of the light-signaling components that are involved in photomorphogenesis and in the developmental processes. To study the effect of COP1 on flowering in a short day plant, we have cloned a full-length of PnCOP1 (Pharbitis nil COP1) cDNA from Pharbitis nil Choisy cv. Violet, and we examined its transcript levels under various conditions. A full-length PnCOP1 cDNA consists of 2,280 bp nucleotidesthat contain 47 bp of 5'-UTR, 232 bp of 3'-UTR including the poly (A) tail, and 1,998 bp of the coding sequence. The deduced amino acid sequence contains 666 amino acids, giving it a theoretical molecular weight of 75 kD and a isolectric point of 6.2. The PnCOP1 contains three distinct domains, an N-terminal $Zn^2+$-binding RING-finger domain, a coiled-coil structure, and WD40 repeats at the C-terminal, implying that the protein plays a role in protein-protein interactions. The PnCOP1 transcript was detected in the cotyledon, hypocotyls and leaves, but not in root. The levels of the PnCOP1 transcript were reduced in leaves that were a farther distance away from the cotyledons. The expression level of the PnCOP1 gene was inhibited by light, while the expression was increased in the dark. During the floral inductive 16 hour-dark period for Pharbitis nil, the expression was increased and it reached its maximum at the 12th hour of the dark period. The levels of PnCOP1 mRNA were dramatically reduced upon light illumination. These results suggest that PnCOP1 may play an important function in the floral induction of Pharbitis nil.

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Expression of Human Mitochondiral Aldehyde Dehydrogenase 2 in Mammalian Cells using Vaccinia Virus-T7 RNA Polymerase

  • Kang, Su-Min;Yoo, Seung-Ku;Lee, Ki-Hwan
    • Journal of Microbiology
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    • v.37 no.1
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    • pp.41-44
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    • 1999
  • Human mitochondrial aldehyde dehydrogenase 2 (ALDH2) is mainly responsible for oxidation of acetaldehyde generated during alcohol oxidation in vivo. A full-length cDNA of human liver ALDH2 was successfully expressed using a vaccinia virus-T7 RNA polymerase system. The expressed ALDH2 had an enzymatic activity as high as the native human liver ALDH2 enzyme.

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Identification of Non-Muscle Nebulin Isoform in Human Brain Library

  • Joo, Young-Mi;Lee, Min-A;Choi, Pyung-Rak;Choi, Jae-Kyoung;Lee, Yeong-Mi;Choi, Su-Il;Kim, Myong-Shin;Jeon, Eun-Hee;Kim, So-Young;Kim, Chong-Rak
    • Biomedical Science Letters
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    • v.10 no.1
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    • pp.23-29
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    • 2004
  • Nebulin is a (Mr 600∼900 kDa) large actin-binding protein specific to skeletal muscle and thought to act as a molecular template that regulates the length of thin filaments. Cardiac muscles of higher vertebrates have been shown earlier to lack nebulin. Recently, full-length nebulin mRNA transcripts have been detected in heart muscle, but at lower levels than in skeletal muscle. Nebulin expression also was detected in the kidney, eye, and otic canal, suggesting that nebulin isoforms may also be expressed in these organs. We have searched for nebulin isoforms in brain of human using PCR and Northern blot. Here, we provide evidence that nebulin mRNA transcripts are expressed in brain. Seven nebulin isoforms (B, C, D, E, F, G and H form) are obtained in human skeletal muscle and four isoforms (B, C, G and H form) in human brain cDNA library. We cloned the 1.3 kb of nebulin fragment from human adult brain library by PCR. The identity of the PCR product was confirmed by sequence analysis. The partial brain nebulin sequence was 99% identical to the skeletal muscle cDNA as determined by Blast alignment. It contains two simple-repeats HR1, HR2 and linker-repeats exon l35∼143 except exon 140. It was different from skeletal muscle B form, which contain HR1 and HR8. These data suggest that nebulin isoform diversity occurs even more extensively than previously known, likely contributing to the distinct thin filament architecture of different striated muscles.

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Molecular Cloning of Human Genomic DNA for Epinephrine Synthesizing Enzyme, Phenylethanolamine N-Methyltransferase (Epinephrine 합성효소인 phenylethanolamine N-methyltransferase의 인간 genomic DNA의 유전자 크로닝)

  • Suh, Yoo-Hun;Huh, Sung-Oh;Chun, Yang-Sook;Kim, Hun-Sik;Lim, Jung-Kyoo;Park, Chan-Woong
    • The Korean Journal of Pharmacology
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    • v.24 no.1
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    • pp.1-10
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    • 1988
  • To obtain information about the structure of the human phenylethanolamin N-methyltransferase (PNMT) and to further define the extent of the evolutionary relationships among PNMT molecules of several spesies, a full length cDNA clone for bovine adrenal PNMT was used to screen a charon 4A genomic library. One phage was isolated and identified, which included the entire PNMT gene. The length of inserted genomic DNA was 13.1-Kilobase (Kb) containing two internal EcoRI sites. Construction of a restriction map and subsequent Southern and dot blot analysis with 5'-and3'-specific cDNA probes allowed the identification of exon-containing fragments. This is the first report of the cloning of gene for human epinephrine synthesizing enzyme.

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Characterization of A cDNA encoding A Novel Phenazine Compound in Hot Pepper

  • Kim, Ukjo;Lee, Sang-Jik;Lee, Mi-Yeon;Park, Soon-Ho;Yang, Seung-Gyun;Harn, Chee-Hark
    • Proceedings of the Korean Society of Plant Pathology Conference
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    • 2003.10a
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    • pp.109.1-109
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    • 2003
  • From the PMMV (pepper mild mottle virus)-inducible ESTs differentially expressed in Capsicum chinense PI257284, we isolated a full-length cDNA (CcPHZF: Capsicum chinense phenazine), encoding a phenazine biosynthesis protein which catalyzes the hydroxylation of phenozine-1-carboxylic acid to 2-hydroxyphenazine-1-carboxylic acid. Phenazine compound has been known to exhibit broad-spectrum of antibiotic activity against various species of bacteria and fungus. The entire region of CcPHZF is 879 bp in length and the open reading frame predicted a polypeptide of 292 amino acids. The homolog of CcPHZF is not Present in database except clones of AC004044 and NM100203 from Arabidopsis with 58 and 59%, respectively. Genomic Southern analysis indicated that the pepper genome contains a single copy of CcPHZF. The CcPHZF was strongly induced in the pepper leaves 3 days after PMMV treatment, when HR occurs on the leaf surface. Characterization of CcPHZF is underway to investigate if the CcPHZF is related to disease resistance against pathogens.

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