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1.
Vinayak Biradar Santosh Narwade Mandar Paingankar Deepti Deobagkar 《Journal of biosciences》2013,38(5):917-924
White Spot Syndrome Virus (WSSV) is a major pathogen in shrimp aquaculture, and its rampant spread has resulted in great economic loss. Identification of host cellular proteins interacting with WSSV will help in unravelling the repertoire of host proteins involved in WSSV infection. In this study, we have employed one-dimensional and two-dimension virus overlay protein binding assay (VOPBA) followed by matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) to identify the host proteins of Penaeus monodon that could interact with WSSV. The VOPBA results suggest that WSSV interacted with housekeeping proteins such as heat shock protein 70, ATP synthase subunit β, phosphopyruvate hydratase, allergen Pen m 2, glyceraldehyde-3-phosphate dehydrogenase, sarcoplasmic calcium-binding protein, actin and 14-3-3-like protein. Our findings suggest that WSSV exploits an array of housekeeping proteins for its transmission and propagation in P. monodon. 相似文献
2.
Summary
Aspergillus
niger NCIM 1207 producing significantly high levels of -glucosidase was found to secrete hemicellulolytic enzymes (xylanase and -xylosidase) in the culture medium. High yields of -xylosidase were obtained when it was grown on either xylan (3%) or wheat bran (4%). Cellulose was a poor inducer of -xylosidase. The pH and temperature optima for-xylosidase were 4.5 and 65°C respectively.NCL Communication No. 3751 相似文献
3.
Sadhana A. Samant Deepti D. Deobagkar N. N. Godbole Dileep N. Deobagkar 《Journal of genetics》1989,68(2):109-116
Sequences homologous to oncogeneyes (Y73/Esh/sarcoma viral oncogene cDNA) in theDrosophila melanogaster Oregon genome were detected byin situ hybridization on salivary gland chromosomes. Three separate sites, 8D/X, 57BC/2R and 95CD/3R, were identified. Presence of
sequences highly homologous toyes in the genomic DNA was confirmed by dot blot hybridization under high stringency conditions. 相似文献
4.
J. Bhalerao A. H. Patki M. Bhave I. Khurana D. N. Deobagkar 《Applied microbiology and biotechnology》1990,34(1):71-76
Summary The xylanase gene of Cellulomonas sp. NCIM 2353 was cloned in pUC 18 and selected by growth on xylan as the sole carbon source. The functional clone harboured the recombinant plasmid with an insert of 1.42 kbp, as determined by restriction mapping and Southern hydridization. The clone secreted a xylanase of 45 000 mol. wt. as determined by Western blot analysis using specific antixylanase antibodies. The DNA insert carried the full structural gene along with its promoter and possibly regulatory sequences, since xylanase activity in the clone Cs11 was inducible by xylan.
Offprint requests to: D. N. Deobagkar 相似文献
5.
A Cellulomonas genomic fragment encoding extracellular amylase activity was isolated as a clone (ACs2) in Escherichia coli DH10B. The amylase was expressed in the absence of IPTG and in the presence of starch or maltose. This enzyme corresponded to the low mobility activity of Cellulomonas amylases as demonstrated on gel electrophoresis. Maltose, as well as lactose, xylose and xylan cross-induced the amylase of clone ACs2. Maltose-induced amylase was purified to homogeneity. ACs2-coded amylase is a 70kDa acidic protein, with a pH optimum of 7.0 at 45°C. This enzyme exhibited an endo mode of action, similar to the corresponding Cellulomonas enzyme. 相似文献
6.
7.
Diverse functional roles of multifunctional proteins arise from either their independent functional domains or dual activities mediated through a single active site. Presence of multifunctional proteins significantly enhances the metabolic efficiency of a cell. Microorganisms utilising complex substrates with extensive microheterogeneities, such as carbohydrates evolved batteries of multifunctional glucanases, facilitating parsimonious utilisation of these substrates. Various attempts have since been made to artificially construct these glucanases. Analysis of information on various glucanases would be helpful in understanding the evolutionary interrelationship between this class of enzymes and will give an insight into the structural features controlling different unrelated activities. This review examines the genesis, evolution and structural features of multifunctional glucanases. 相似文献
8.
Using a functional genomic approach, we have identified and characterized a cytosolic form of aminopeptidase P from Drosophila melanogaster. This study represents the first characterization of an insect aminopeptidase P. The complete sequence of a 12.5 kbp genomic clone from D. melanogaster showed the presence of a 1,839 bp ORF, encoding a protein of 613 amino acids with a calculated molecular mass of 68.5 kDa. The deduced amino acid sequence was 48% identical and 66% similar to rat and human cytosolic aminopeptidase P. Amino acids important for catalytic activity and the metal binding ligands were found to be conserved between Drosophila AP-P and its mammalian homologues. The recombinant enzyme expressed in Escherichia coli hydrolyzed the amino terminal Xaa-Pro bond of substance P and bradykinin, revealing its functional identity. Further enzyme characterization showed the enzyme to be a manganese-dependent metallopeptidase. Immunoblot analysis showed that DAP-P is located exclusively in the cytosol and is temporally regulated during Drosophila development. In the adult fly, the protein could be detected in gut, testis and ovary, with a high level of expression in brain. 相似文献
9.
Deobagkar DD Panikar C Rajpathak SN Shaiwale NS Mukherjee S 《Methods (San Diego, Calif.)》2012,56(2):260-267
DNA methylation is an important epigenetic modification involved in the ability of an organism to respond to stress and adaptation. It has been implicated in development, differentiation, oncogenesis, chromatin remodelling, nutrigenomics, and appears to play a pivotal role in many regulatory and adaptive functions. It is therefore important to analyze the status of DNA methylation and its changes under various developmental, carcinogenic, pharmacological, and environmental conditions. In this report we describe an immunochemical method for the detection of genome wide DNA methylation and its alterations under various conditions along with the analysis of DNA methyltransferase activity. The ability of this approach to detect and provide a map of methylomic changes in a genome facilitates assessment of various agents and conditions which can alter this important epigenetic signal. This experimental system permits rapid evaluation of potential target genes which would be modulated by DNA methylation changes and thus the gene networks that govern the processes. 相似文献
10.
Patole J Sandbhor U Padhye S Deobagkar DN Anson CE Powell A 《Bioorganic & medicinal chemistry letters》2003,13(1):51-55
Acetylpyridine benzoyl hydrazone (APBH) 1 and its copper complex [[(APBH)CuCl](2)].(EtOH) 2 were structurally characterized by elemental analysis, magnetic measurements, spectroscopy, electrochemistry and single crystal X-ray diffraction studies. The ligand assumes Z-isomeric form and planar geometry in solid state, coordinating through pyridyl nitrogen, azomethine nitrogen and the carbonyl oxygen of the benzoyl group. The copper complex is dimeric and has a distorted octahedral geometry in which the two copper atoms are bridged by two chloride atoms. Antimycobacterial screening of ligand and its copper compound against Mycobacterium smegmatis shows clear enhancement in the antitubercular activity upon copper complexation. 相似文献