scholarly journals Molecular characterization of the honeybee Apis mellifera carnica in Serbia

2009 ◽  
Vol 61 (4) ◽  
pp. 587-598 ◽  
Author(s):  
N. Nedic ◽  
L. Stanisavljevic ◽  
M. Mladenovic ◽  
Jelena Stanisavljevic
Keyword(s):  
Comparative Analysis ◽  
Similarity Index ◽  
Phylogenetic Group ◽  
The Novel ◽  
Polymorphic Position ◽  
Queen Bees ◽  
Productive Traits ◽  
High Degree ◽  
Degree Of Similarity

The sequences COI-COII of the mitochondrial DNA region in honeybee from four geographically distant regions in Serbia (Vrsac, Knjazevac, Kraljevo, and Vranje) are analyzed. The research was conducted on eight different, previously selected honeybee lines preserved (linear selection) in the four reprocenters for queen bees. All four studied honeybee lines differ in morphological and productive traits, each being specific for the corresponding region. In addition to analysis of the mtDNA sequences in Serbian honeybee, a comparative analysis of the phylogenetic group of so far known C2 haplotypes was also performed. The results revealed two novel polymorphic positions in the COI-COII mtDNA region, viz., h2 at position 3474 and l2 at position 3534 (a T nucleotide deletion in both cases) in honeybees from the regions of Vranje and Knjazevac, respectively. Two novel mtDNA haplotypes in the honeybee C2 phylogenetic group, together with C2I (the new polymorphic position l2 and G-A transition at position 3587) and C2J (the new polymorphic position h2), are described. Also, comparative analysis performed on sequences from GenBank data showed a high degree of similarity (similarity index = 99.4%) between the novel C2I mtDNA haplotype and an A. m. cypria haplotype originating from Turkey. Certain domestic Kranjska honeybee populations from Serbia represent an autochthonous gene pool that can be of great importance for further presentation of honeybee biodiversity. The present paper contributes to characterization of mtDNA in honeybee of Serbia.

scholarly journals Molecular Characterization of S Locus Genes, SLG and SRK, in a Pollen-Recessive Self-Incompatibility Haplotype of Brassica rapa L

Genetics ◽  
1998 ◽  
Vol 149 (3) ◽  
pp. 1587-1597 ◽  
Author(s):  
Katsunori Hatakeyama ◽  
Takeshi Takasaki ◽  
Masao Watanabe ◽  
Kokichi Hinata
Keyword(s):  
Brassica Rapa ◽  
Genomic Dna ◽  
Transmembrane Domain ◽  
Brassica Species ◽  
Self Incompatibility ◽  
S Locus ◽  
Intron Sequence ◽  
High Degree ◽  
Degree Of Similarity

Abstract In Brassica species that exhibit self-incompatibility, two genes, SLG and SRK, at the S locus are involved in the recognition reaction with self and non-self pollen. From a pollen-recessive S29 haplotype of Brassica rapa, both cDNA and genomic DNA clones for these two genes were isolated and characterized. The nucleotide sequence for the S domain of SRK29 showed a high degree of similarity with that of SLG29, and they belong to Class II type. RNA gel blot analysis showed that the transcript of SLG29 consisted of the first and second exons, and no other transcript containing any part of the intron sequence was detected. Because no transmembrane domain was encoded by the second exon of SLG29, SLG29 was designated a secreted type glycoprotein. SLGs of two other pollen-recessive haplotypes, S40 and S44, of B. rapa also had a similar structure to that of SLG29. Previously, SLG2 from a pollen-recessive haplotype, S2, of Brassica oleracea was found to produce two different transcripts, one for the secreted type glycoprotein and the other for a putative membrane-anchored form of SLG. Therefore, the nature of these SLGs from pollen-recessive haplotypes of B. rapa is different from that of SLG2 of B. oleracea.

scholarly journals Does AFTA Create More Trade for Thailand? An Investigation of Some Key Trade Indicators

2010 ◽  
Vol 29 (1) ◽  
pp. 51-78 ◽  
Author(s):  
Piriya Pholphirul
Keyword(s):  
Free Trade Agreement ◽  
Similarity Index ◽  
Rank Correlation ◽  
Trade Agreement ◽  
Trade Diversion ◽  
Trade Creation ◽  
Market Penetration ◽  
Future Extension ◽  
High Degree ◽  
Degree Of Similarity

This paper examines whether the ASEAN Free Trade Agreement (“AFTA”) creates trade for Thailand or actually diverts it away from the country. It does this by analyzing various trade indicators: the Export Similarity Index, the Intra-Industry Trade Index, and Revealed Comparative Advantage (RCA) rank correlation. By examining the patterns of trade between Thailand and other members of ASEAN, it reveals a high degree of similarity regarding the trade structure between Thailand and AFTA, which indicates that there will be fewer trade-creation benefits from AFTA and a greater likelihood of trade diversion once the AFTA scheme has been fully implemented. This similarity pattern explains the reasons for future collaboration among member countries and supportive arguments for the future extension of ASEAN (“ASEAN+”). Market-penetration and development strategies should be employed by Thai exporters when accessing the ASEAN market.

scholarly journals Characterization of the Duffy-Binding-Like Domain of Plasmodium falciparum Blood-Stage Antigen 332

2011 ◽  
Vol 2011 ◽  
pp. 1-14 ◽  
Author(s):  
Sandra Nilsson ◽  
Kirsten Moll ◽  
Davide Angeletti ◽  
Letusa Albrecht ◽  
Inari Kursula ◽  
...  
Keyword(s):  
Plasmodium Falciparum ◽  
Immunofluorescence Microscopy ◽  
Homology Model ◽  
Cross Reactivity ◽  
Blood Stage ◽  
Conserved Domain ◽  
Erythrocyte Binding ◽  
High Degree ◽  
Degree Of Similarity

Studies on Pf332, a major Plasmodium falciparum blood-stage antigen, have largely been hampered by the cross-reactive nature of antibodies generated against the molecule due to its high content of repeats, which are present in other malaria antigens. We previously reported the identification of a conserved domain in Pf332 with a high degree of similarity to the Duffy-binding-like (DBL) domains of the erythrocyte-binding-like (EBL) family. We here describe that antibodies towards Pf332-DBL are induced after repeated exposure to P. falciparum and that they are acquired early in life in areas of intense malaria transmission. Furthermore, a homology model of Pf332-DBL was found to be similar to the structure of the EBL-DBLs. Despite their similarities, antibodies towards Pf332-DBL did not display any cross-reactivity with EBL-proteins as demonstrated by immunofluorescence microscopy, Western blotting, and peptide microarray. Thus the DBL domain is an attractive region to use in further studies on the giant Pf332 molecule.

scholarly journals Physicochemical and Biological Characterization of a Biosimilar Trastuzumab

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Carlos A. López-Morales ◽  
Mariana P. Miranda-Hernández ◽  
L. Carmina Juárez-Bayardo ◽  
Nancy D. Ramírez-Ibáñez ◽  
Alexis J. Romero-Díaz ◽  
...  
Keyword(s):  
Reference Product ◽  
World Health ◽  
Malignant Neoplasms ◽  
Pharmacological Studies ◽  
Comparability Exercise ◽  
Potential Impact ◽  
Health Organization ◽  
High Degree ◽  
Degree Of Similarity

According to the World Health Organization, the incidence of malignant neoplasms and endocrine, blood, and immune disorders will increase in the upcoming decades along with the demand of affordable treatments. In response to this need, the development of biosimilar drugs is increasing worldwide. The approval of biosimilars relies on the compliance with international guidelines, starting with the demonstration of similarity in their physicochemical and functional properties against the reference product. Subsequent clinical studies are performed to demonstrate similar pharmacological behavior and to diminish the uncertainty related to their safety and efficacy. Herein we present a comparability exercise between a biosimilar trastuzumab and its reference product, by using a hierarchical strategy with an orthogonal approach, to assess the physicochemical and biological attributes with potential impact on its pharmacokinetics, pharmacodynamics, and immunogenicity. Our results showed that the high degree of similarity in the physicochemical attributes of the biosimilar trastuzumab with respect to the reference product resulted in comparable biological activity, demonstrating that a controlled process is able to provide consistently the expected product. These results also constitute the basis for the design of subsequent delimited pharmacological studies, as they diminish the uncertainty of exhibiting different profiles.

scholarly journals Characterization of Two Campylobacter jejuni Strains for Use in Volunteer Experimental-Infection Studies

2008 ◽  
Vol 76 (12) ◽  
pp. 5655-5667 ◽  
Author(s):  
Frédéric Poly ◽  
Timothy D. Read ◽  
Yu-Han Chen ◽  
Mario A. Monteiro ◽  
Oralak Serichantalergs ◽  
...  
Keyword(s):  
Southeast Asia ◽  
Campylobacter Jejuni ◽  
Experimental Infection ◽  
Type Strain ◽  
Molecular Mimicry ◽  
Clinical Isolates ◽  
Capsule Locus ◽  
High Degree ◽  
Degree Of Similarity

ABSTRACT The development of vaccines against Campylobacter jejuni would be facilitated by the ability to perform phase II challenge studies. However, molecular mimicry of the lipooligosaccharide (LOS) of most C. jejuni strains with human gangliosides presents safety concerns about the development of Guillain-Barré syndrome. Clinical isolates of C. jejuni that appeared to lack genes for the synthesis of ganglioside mimics were identified by DNA probe analyses. Two clinical isolates from Southeast Asia (strains BH-01-0142 and CG8421) were determined to express the LOS type containing N-acetyl quinovosamine. No ganglioside structures were observed to be present in the LOSs of these strains, and pyrosequence analyses of the genomes of both strains confirmed the absence of genes involved in ganglioside mimicry. The capsule polysaccharide (CPS) of BH-01-0142 was determined to be composed of galactose (Gal), 6-deoxy-ido-heptose, and, in smaller amounts, d-glycero-d-ido-heptose, and the CPS of CG8421 was observed to contain Gal, 6-deoxy-altro-heptose, N-acetyl-glucosamine, and minor amounts of 6-deoxy-3-O-Me-altro-heptose. Both CPSs were shown to carry O-methyl-phosphoramidate. The two genomes contained strain-specific zones, some of which could be traced to a plasmid origin, and both contained a large chromosomal insertion related to the CJEI3 element of C. jejuni RM1221. The genomes of both strains shared a high degree of similarity to each other and, with the exception of the capsule locus of CG8421, to the type strain of the HS3 serotype, TGH9011.

scholarly journals Synthesis and Characterization of the Novel Nε-9-Fluorenylmethoxycarbonyl-l-Lysine N-Carboxy Anhydride. Synthesis of Well-Defined Linear and Branched Polypeptides

Polymers ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 2819
Author(s):  
Varvara Athanasiou ◽  
Pandora Thimi ◽  
Melina Liakopoulou ◽  
Foteini Arfara ◽  
Dimitra Stavroulaki ◽  
...  
Keyword(s):  
Ring Opening ◽  
High Vacuum ◽  
Primary Amines ◽  
Synthesis And Characterization ◽  
The Novel ◽  
Stimuli Responsive ◽  
Linear Poly ◽  
Compositional Homogeneity ◽  
High Degree

The synthesis of well-defined polypeptides exhibiting complex macromolecular architectures requires the use of monomers that can be orthogonally deprotected, containing primary amines that will be used as the initiator for the Ring Opening Polymerization (ROP) of N-carboxy anhydrides. The synthesis and characterization of the novel monomer Nε-9-Fluorenylmethoxycarbonyl-l-Lysine N-carboxy anhydride (Nε-Fmoc-l-Lysine NCA), as well as the novel linear Poly(Nε-Fmoc-l-Lys)n homopolypeptide and Poly(l-Lysine)78–block–[Poly(l-Lysine)10–graft–Poly(l-Histidine)15] block-graft copolypeptide, are presented. The synthesis of the graft copolypeptide was conducted via ROP of the Nε-Boc-l-Lysine NCA while using n-hexylamine as the initiator, followed by the polymerization of Nε-Fmoc-l-Lysine NCA. The last block was selectively deprotected under basic conditions, and the resulting ε-amines were used as the initiating species for the ROP of Nim-Trityl-l-Histidine NCA. Finally, the Boc- and Trt- groups were deprotected by TFA. High Vacuum Techniques were applied to achieve the conditions that are required for the synthesis of well-defined polypeptides. The molecular characterization indicated that the polypeptides exhibited high degree of molecular and compositional homogeneity. Finally, Dynamic Light Scattering, ζ-potential, and Circular Dichroism measurements were used in order to investigate the ability of the polypeptide to self-assemble in different conditions. This monomer opens avenues for the synthesis of polypeptides with complex macromolecular architectures that can define the aggregation behavior, and, therefore, can lead to the synthesis of “smart” stimuli-responsive nanocarriers for controlled drug delivery applications.

scholarly journals Analysis on Trade Competitiveness and Trade Complementarity between Uzbekistan and the Member States of Eurasian Economic Union

2021 ◽  
Vol 7 (2) ◽  
pp. 7-19
Author(s):  
Zhang Lingzhi
Keyword(s):  
Union Member ◽  
Similarity Index ◽  
Commodity Trade ◽  
Member States ◽  
Eurasian Economic Union ◽  
Economic Union ◽  
Trade Competitiveness ◽  
High Degree ◽  
Degree Of Similarity ◽  
Revealed Comparative Advantage Index

Based on the 2010-2019 United Nations commodity trade data, this paper has calculated the regional revealed comparative advantage index, export similarity index, trade complementarity index and intra-industry trade index of trade between Uzbekistan and the member states of the Eurasian Economic Union. This paper analyses the competitiveness and complementarity of trade between Uzbekistan and the member states of the Eurasian Economic Union. Uzbekistan and the Eurasian Economic Union member countries have a high degree of similarity in the export of commodities. There is a certain degree of competitiveness in commodities exported to the same market. However, there are differences in the structure of commodity trade among member states. Uzbekistan’s trade complementarity with the member states of the Eurasian Economic Union is distributed in food and live animals (SITC0), mineral fuels, lubricants and related materials (SITC3), manufactured goods classified chiefly by material (SITC6), commodities and transactions not classified elsewhere in the SITC (SITC9). Uzbekistan has strong trade complementarity with Armenia, Belarus and Kyrgyzstan, but weak trade complementarity with Russia and Kazakhstan.

scholarly journals Identification and characterization of Saccharomyces cerevisiae yapsin 3, a new member of the yapsin family of aspartic proteases encoded by the YPS3 gene

1999 ◽  
Vol 339 (2) ◽  
pp. 407-411 ◽  
Author(s):  
Vicki OLSEN ◽  
Niamh X. CAWLEY ◽  
Jakob BRANDT ◽  
Michi EGEL-MITANI ◽  
Y. Peng LOH
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Amino Acid ◽  
Cleavage Sites ◽  
Basic Residue ◽  
Aspartic Proteases ◽  
N Terminus ◽  
High Degree ◽  
Identification And Characterization ◽  
Degree Of Similarity

A new aspartic protease from Saccharomyces cerevisiae, with a high degree of similarity with yapsin 1 and yapsin 2 and a specificity for basic residue cleavage sites of prohormones, has been cloned. This enzyme was named yapsin 3. Expression of a C-terminally truncated non-membrane anchored yapsin 3 in yeast yielded a heterogeneous protein between 135–200 kDa which, upon treatment with endoglycosidase H, migrated as a 60 kDa form. Amino-acid analysis of the N-terminus of expressed yapsin 3 revealed two different N-terminal residues, serine-48 and phenylalanine-54, which followed a dibasic and a monobasic residue respectively. Cleavage of several prohormones by non-anchored yapsin 3 revealed a specificity distinct from that of yapsin 1.

scholarly journals Molecular characterization of Brazilian strains of Xanthomonas campestris pv. viticola by rep-PCR fingerprinting

2005 ◽  
Vol 30 (1) ◽  
pp. 46-54 ◽  
Author(s):  
Loiselene C. Trindade ◽  
Mirtes F. Lima ◽  
Marisa A. S. V. Ferreira
Keyword(s):  
Repetitive Dna ◽  
Type Strain ◽  
Xanthomonas Campestris ◽  
Geographic Location ◽  
Bacterial Canker ◽  
Bacterial Dna ◽  
High Degree ◽  
Genomic Patterns ◽  
Degree Of Similarity

Bacterial canker of grapevine (Vitis vinifera), caused by Xanthomonas campestris pv. viticola was first detected in Brazil in 1998, affecting grapevines in the São Francisco river basin, state of Pernambuco. The disease was also reported in Juazeiro, Bahia and later in Piauí and Ceará. Due to its limited geographical distribution and relatively recent detection in Brazil, very little is known about the pathogen's biology and diversity. Repetitive DNA based-PCR (rep-PCR) profiles were generated from purified bacterial DNA of 40 field strains of X. campestris pv. viticola, collected between 1998 and 2001 in the states of Pernambuco, Bahia and Piauí. Combined analysis of the PCR patterns obtained with primers REP, ERIC and BOX, showed a high degree of similarity among Brazilian strains and the Indian type strain NCPPB 2475. Similar genomic patterns with several diagnostic bands, present in all strains, could be detected. Fingerprints were distinct from those of strains representing other pathovars and from a yellow non-pathogenic isolate from grape leaves. The polymorphism observed among the Brazilian strains allowed their separation into five subgroups, although with no correlation with cultivar of origin, geographic location or year collected.

Molecular assessment of genetic divergence in pea genotypes using microsatellite markers

2015 ◽  
Author(s):  
Nilmani Prakash ◽  
Rajeev Kumar ◽  
V. K. Choudhary ◽  
Chandra Mohan Singh
Keyword(s):  
Genetic Divergence ◽  
Field Pea ◽  
Similarity Coefficients ◽  
Starch Structure ◽  
Molecular Assessment ◽  
High Degree ◽  
Degree Of Similarity ◽  
Very High ◽  
Different Levels

A study addressing to biochemical and molecular characterization of nineteen pea genotypes was conducted during rabi – 2012. Study on starch structure indicated that all the field pea genotypes showed simple grains, whereas all the vegetable pea genotypes had compound grains, which looked irregularly star- shaped, indicating the importance of starch structure to distinguish the vegetable pea from the field pea. Out of 26 primer pairs, 10 exhibited different levels of polymorphism amongst the nineteen pea genotypes. A total of fourty-eight allelic variants were detected among them with an average of 4.8 alleles per locus. Cluster analysis grouped all the nineteen genotypes into two broad clusters. The large range of similarity coefficient revealed by SSR markers provided greater confidence for the assessment of genetic divergence and interrelationship among the predicted two groups of field and vegetable peas. A perusal of similarity coefficients clearly reflected that a very high degree of similarity exists between pea genotypes VRP-9 and FP9-552, whereas FP9-557 and HBG found more diverse, may be used in breeding programme to generate the more recombinants.

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