Analytical electrofocusing and two-dimensional electrophoresis of proteins extracted from the mycelia of aggressive and nonaggressive strains of Ophiostoma ulmi

1986 ◽  
Vol 64 (9) ◽  
pp. 2073-2081 ◽  
Author(s):  
Robert S. Jeng
Keyword(s):  
Dutch Elm Disease ◽  
Two Dimensional ◽  
Polyacrylamide Gels ◽  
Ophiostoma Ulmi ◽  
Two Dimensional Electrophoresis ◽  
Coomassie Blue ◽  
Isoelectric Points ◽  
Additional Protein ◽  
Dimensional Electrophoresis ◽  
Electrophoresis Of Proteins

Soluble mycelial proteins from Ophiostoma ulmi (Buism.) Nannf., the causal agent of Dutch elm disease, were separated by analytical electrofocusing and two-dimensional electrophoresis in polyacrylamide gels. Results showed the aggressive and nonaggressive strains of this pathogen each had about 60 Coomassie blue stained bands having isoelectric points from 3 to 7. Both strains of this fungus had their own characteristic electrofocusing patterns. Nonaggressive isolate S116, for example, lacked two protein bands, one near the anode and one near the cathode, but it had five additional protein bands distributed from pH 4 to 6. Two-dimensional electrophoresis of total soluble proteins depicted that there were 36 proteins found to be specific for the nonaggressive isolate S116 and 12 proteins for the aggressive isolate RR2.

Sialic Acid Dependent Polypeptide Chain Heterogeneity of Human Fibrinogen Demonstrated by Two-Dimensional Electrophoresis

1982 ◽  
Vol 47 (01) ◽  
pp. 019-021 ◽  
Author(s):  
Cemal Kuyas ◽  
André Haeberli ◽  
P Werner Straub
Keyword(s):  
Sialic Acid ◽  
Polypeptide Chain ◽  
Two Dimensional ◽  
Charge Heterogeneity ◽  
Human Fibrinogen ◽  
Two Dimensional Electrophoresis ◽  
Isoelectric Points ◽  
Polypeptide Chains ◽  
Dimensional Electrophoresis ◽  
Chain Type

SummaryHuman fibrinogen was compared with asialofibrinogen by two-dimensional electrophoresis to evaluate the contribution of sialic acid to the heterogeneity of the γ- and Bβ-polypeptide chains.Reduced fibrinogen showed three major variants for both the γ- and Bβ-chains. In addition two minor γ-bands with a more acidic isoelectric point than the normal γ-chains were observed. Electrophoresis in the second dimension (SDS) suggests that these most acidic bands are γ-chain-variants with a higher molecular weight. In asialofibrinogen only two predominant variants with more alkaline isoelectric points were present in each chain type.It is concluded that enzymatic removal of sialic acid partially reduces the heterogeneity of the γ- and Bβ-polypeptide chains of human fibrinogen, but additional sources producing charge heterogeneity must be sought.

Effects on Two-Dimensional Electrophoresis Seperation of Panax Ginseng Proteins by Gradient Polyacrylamide Gels

2010 ◽  
Vol 39 (12) ◽  
pp. 2118-2122
Author(s):  
孙立伟 SUN Li-wei ◽  
雷秀娟 LEI Xiu-juan ◽  
麻锐 MA Rui ◽  
陈佳庆 CHEN Jia-qing ◽  
姜锐 JIANG Rui ◽  
...  
Keyword(s):  
Panax Ginseng ◽  
Two Dimensional ◽  
Polyacrylamide Gels ◽  
Two Dimensional Electrophoresis ◽  
Dimensional Electrophoresis

Plasma apolipoproteins in Tangier disease, as studied with two-dimensional electrophoresis.

1987 ◽  
Vol 33 (1) ◽  
pp. 120-122 ◽  
Author(s):  
S Visvikis ◽  
M F Dumon ◽  
J Steinmetz ◽  
T Manabe ◽  
M M Galteau ◽  
...  
Keyword(s):  
The Other ◽  
High Density Lipoproteins ◽  
Major Protein ◽  
Two Dimensional ◽  
Tangier Disease ◽  
Two Dimensional Electrophoresis ◽  
Isoelectric Points ◽  
Molecular Masses ◽  
Dimensional Electrophoresis ◽  
Homozygous Patient

Abstract Tangier disease is characterized by a deficiency of high-density lipoproteins and of their major protein constituent, apolipoprotein (apo) A-I. We used high-resolution two-dimensional electrophoresis to examine the principal plasma apolipoproteins (A-I, A-II, A-IV, E, C-II, and C-III) of three persons with Tangier disease, one homozygous patient and his two heterozygous children, comparing the patterns with those for healthy subjects. Characteristic abnormalities were found in the distribution of the isoproteins of apo A-I, there being a normal concentration of pro apo A-I but dramatically decreased concentrations of the other apo A-I isoproteins. We also found hitherto-undescribed polypeptide abnormalities in apo C-III: sialylated and nonsialylated forms of apo C-III appear as double spots having the same isoelectric points but different molecular masses. No other substantial difference was detected in the polypeptide distribution of the other plasma apolipoproteins.

Two-dimensional electrophoresis of proteins with a different approach to isoelectric focusing

The Analyst ◽  
1994 ◽  
Vol 119 (6) ◽  
pp. 1341-1344 ◽  
Author(s):  
S. M. Saqlan Naqvi ◽  
V. Cengiz Özalp ◽  
H. Avni Öktem ◽  
Meral Yücel
Keyword(s):  
Isoelectric Focusing ◽  
Two Dimensional ◽  
Two Dimensional Electrophoresis ◽  
Dimensional Electrophoresis ◽  
Electrophoresis Of Proteins

The oral apparatus of Tetrahymena. V. Oral apparatus polypeptides and their distribution

1980 ◽  
Vol 44 (1) ◽  
pp. 317-333
Author(s):  
R.H. Gavin
Keyword(s):  
Molecular Weight ◽  
Basal Body ◽  
Tetrahymena Thermophila ◽  
Electrophoretic Analysis ◽  
Two Dimensional ◽  
Molecular Weight Range ◽  
Two Dimensional Electrophoresis ◽  
Weight Range ◽  
Isoelectric Points ◽  
Dimensional Electrophoresis

Two-dimensional electrophoresis was used to resolve approximately 162 polypeptides from the isolated oral apparatus of Tetrahymena thermophila. The molecular weight range was between 110 000 and 15 000 Daltons. The polypeptides had apparent isoelectric points between pH 3.3 and pH 7.2. Electrophoretic analysis of isolated ciliary axonemes and fractionated oral apparatuses made possible the assignment of polypeptides to structures within the oral apparatus. Approximately 24 polypeptides, including alpha and beta tubulins, are probable components of the basal body-basal plate complex. At least 5 of the oral apparatus polypeptides, including alpha and beta tubulin, are components of the oral apparatus ciliary axonemes. Approximately 138 polypeptides are components of the oral apparatus framework.

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