Polyacrylamide gel electrophoresis of Bacteroides succinogenes

1984 ◽  
Vol 30 (6) ◽  
pp. 863-866 ◽  
Author(s):  
R. Begbie ◽  
C. S. Stewart

Polyacrylamide gel electrophoresis (PAGE) of sodium dodecyl sulphate (SDS) extracts of bacterial cells was used to assess the similarity of polypeptide patterns in 15 isolates of the rumen cellulolytic bacterium Bacteroides succinogenes. Analysis of densitometer traces of the polypeptide band patterns suggested that the majority of the isolates tested were closely related to the type strain S85. Representatives of other species of Gram-negative rumen bacteria had distinct SDS–PAGE patterns, and it is concluded that SDS–PAGE is a useful aid to the identification of B. succinogenes.

2018 ◽  
Vol 26 (2) ◽  
pp. 058
Author(s):  
Anna P. Roswiem ◽  
Triayu Septiani

<em>Bahan<strong> </strong>baku untuk membuat baso adalah daging hewan, pada umumnya dari daging sapi, ayam, ikan dan babi. Di beberapa daerah di Indonesia terjadi kasus baso tikus. Tujuan penelitian ini adalah menguji ada tidaknya kandungan daging tikus pada produk baso yang dijual di pasar Cempaka Putih-Kecamatan Kramat Jakarta Pusat dan di pedagang baso atau mie baso di sekitar kampus Universitas YARSI Jakarta. Daging adalah protein salah satu metode untuk mengidentifikasi protein adalah metode Sodium Dodecyl Sulphate Polyacrylamide Gel Electrophoresis (SDS-PAGE).<strong> </strong>Hasil penelitian menunjukkan bahwa dari 6 sampel baso terindikasi ada 2 sampel baso dengan nomor 1 dan 5 yang dibuat dari campuran daging sapi dan tikus; ada 1 sampel baso dengan nomor 6 yang terbuat dari daging tikus; dan 2 sampel baso dengan nomor 2 dan 3 yang terbuat dari campuran sapi  dan babi, dan hanya 1 sampel baso dengan nomor sampel 4 yang benar-benar terbuat dari daging sapi.</em>


2000 ◽  
Vol 7 (4) ◽  
pp. 617-624 ◽  
Author(s):  
Zhongxing Liang ◽  
Didier Raoult

ABSTRACT Bartonella species can be differentiated by microimmunofluorescence assay, sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE), and immunoblotting with murine polyclonal antisera to Bartonella henselae, B. quintana, B. elizabethae, and B. bacilliformis. A pairwise comparison on the basis of SDS-PAGE protein profiles demonstrated similarity values for proteins of different Bartonella species ranging from 28.6 to 86.4%. Antigenic relationships revealed by immunoblotting with murine antisera were equivalent to those of proteins observed by SDS-PAGE. A dendrogram obtained on the basis of protein bands of SDS-polyacrylamide gels showed that Bartonella species could be divided into three groups. B. bacilliformis was distinct from all otherBartonella species; B. grahamii, B. taylorii, B. doshiae, and B. vinsoniiformed a cluster, as did B. henselae, B. quintana, B. elizabethae, and B. clarridgeiae. These relationships were consistent with those revealed by parsimony trees derived from 16S rRNA and gltAgene sequencing. SDS-PAGE analysis showed that 120-, 104-, 85-, 71-, 54-, 47-, 40-, 33-, 30-, and 19-kDa proteins were present in all species, with the 54-kDa protein being the most dominant. Proteins with a molecular mass of less than 54 kDa allow the differentiation of species and are a possible target for future species-specific antibodies and antigens.


2017 ◽  
Vol 5 (2) ◽  
pp. 31-38 ◽  
Author(s):  
Virginie Jakob ◽  
Livia Brunner ◽  
Christophe Barnier-Quer ◽  
Molly Blust ◽  
Nicolas Collin ◽  
...  

Objectives: Several vaccine adjuvants comprise complex nano- or micro-particle formulations, such as oil-in-water emulsions. In order to characterize interactions and compatibility of oil-in-water emulsion adjuvants with protein antigens in vaccines, effective protein characterization methods that can accommodate potential interference from high concentrations of lipid-based particles are needed. Methods: Sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) is a standard protein characterization technique which is affected by the presence of adjuvants such as oil-in-water emulsions. In this article, we investigate variations in SDS-PAGE methods that result in a reduction of adjuvant-induced staining artifacts. We have investigated whether the SDS method or the adjuvant composition were the reason for these artifacts and succeeded in reducing the artifacts with a modified sample preparation and different staining procedures. Results: The best results were obtained by using gold staining or silver staining instead of a Coomassie Blue staining procedure. Moreover, the replacement of the dilution buffer (20% SDS to disrupt emulsion) by alternative detergents such as Tween® 80 and Triton® X-100 removed adjuvant-induced streaking artifacts at the top of the gel. Conclusions: These methods may be useful for improving characterization approaches of antigen–adjuvant mixtures by SDS-PAGE.


1984 ◽  
Vol 44 (2) ◽  
pp. 117-123 ◽  
Author(s):  
N. K. Singh ◽  
K. W. Shepherd

SUMMARYThe gene(s) controlling the high-molecular-weight glutelin subunits in rye (designated as Glu-Rl) was mapped with respect to the centromere using a 1RL-1DS wheat-rye translocation line and sodium dodecyl sulphate polyacrylamide gel electrophoresis (SDS-PAGE). Analysis of 479 seeds from test-crosses between a 1R/1RL-1DS heterozygote and the cultivar India 115, revealed 14·6% aneuploid and 3·95% recombinant progeny. Excluding the aneuploids, this locus was calculated to be 4·65 ± 1·04 cM from the centromere on the long arm of chromosome 1R, which is comparable to the position of the homoeologous loci in wheat and barley.


Plant Disease ◽  
1998 ◽  
Vol 82 (2) ◽  
pp. 210-212 ◽  
Author(s):  
Harry H. Kope ◽  
Abul K. M. Ekramoddoullah ◽  
Jack R. Sutherland

Analysis by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) of crude extracts of disease-free and Didymascella thujina-infected foliage of western red-cedar revealed differences in several protein bands and suggests that distinct proteins of D. thujina origin can be identified by SDS-PAGE.


1998 ◽  
Vol 36 (12) ◽  
pp. 3520-3523 ◽  
Author(s):  
Luc A. Devriese ◽  
Peter Vandamme ◽  
Bruno Pot ◽  
Mia Vanrobaeys ◽  
Karel Kersters ◽  
...  

Strains formerly identified as Streptococcus bovis were allotted to two groups by sodium dodecyl sulfate-polyacrylamide gel electrophoresis analysis of whole-cell proteins. Strains from humans with infections, mostly patients with endocarditis, and strains from pigeons with septicemia clustered with the recently described species Streptococcus gallolyticus. The original S. bovis type strain and strains exclusively from ruminants formed the second cluster. The findings indicate that S. gallolyticus is more likely to be involved in human and animal infections than S. bovis. Growth characteristics and several biochemical reactions were found to be useful in the differentiation of S. gallolyticus fromS. bovis.


WARTA AKAB ◽  
2021 ◽  
Vol 44 (2) ◽  
Author(s):  
Alvina Nur Aini

Perbedaan proses penyembelihan dapat mempengaruhi respon fisiologis hewan yang dapat diidentifikasi melalui pola ekspresi protein. Dalam penelitian ini dilakukan analisis awal protein daging untuk menganalisis pengaruh perbedaan metode penyembelihan, yaitu metode halal dan nonhalal. Penelitian menggunakan enam ekor tikus Wistar sebagai hewan uji. Kelompok uji pertama diberi perlakuan penyembelihan dengan metode halal, yaitu dengan pemotongan pembuluh darah pada leher hewan. Kelompok kedua diberi perlakuan penyembelihan secara nonhalal, yaitu dilakukan metode dislokasi servikal. Analisis profil protein daging dilakukan dengan menggunakan Sodium Dodecyl Sulfate Polyacrylamide Gel Electrophoresis (SDS-PAGE). Hasil SDS-PAGE menunjukkan beberapa pita protein tereskpresi pada berat molekul 116; 55; 48; 45; 41; 26; dan 17 kDa (kiloDalton), sedangkan hasil kuantifikasi pita protein menunjukkan sampel protein daging hasil penyembelihan nonhalal memiliki kuantitas lebih tinggi daripada sampel protein daging hasil penyembelihan halal. Kuantitas protein yang lebih tinggi pada penyembelihan nonhalal diduga karena lepasnya protein tertentu ke dalam sistem metabolisme hewan sebagai akibat dari respon stres yang diberikan.Kata kunci: elektroforesis; halal; nonhalal; protein; SDS-PAGE


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