WorldCat Identities

Nour, El-Sayed

Overview
Works: 6 works in 6 publications in 2 languages and 7 library holdings
Roles: Author
Classifications: QA276,
Publication Timeline
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Most widely held works by El-Sayed Nour
A time series approach to life table construction by El-Sayed Nour( Book )

1 edition published in 1974 in English and held by 2 WorldCat member libraries worldwide

Fertility analysis based on the age parity distribution by El-Sayed Nour( Book )

in English and held by 1 WorldCat member library worldwide

Fertility analysis based on the age parity distribution by El-Sayed Nour( )

in English and held by 1 WorldCat member library worldwide

Premier système toxine antitoxine de type I fonctionnel chez staphylococcus aureus, orchestré par un cis-ARN agissant en trans by Nour Sayed( Book )

1 edition published in 2012 in French and held by 1 WorldCat member library worldwide

Some small RNAs (sRNAs) are essential regulators in all living organisms. Their number and diversity is surprisingly high. In bacteria, they are involved in many processes of gene regulation. We studied a pair of sRNAs of unknown function, SprA1 and SprA1AS, expressed by a pathogenicity island of Staphylococcus aureus (S. aureus) genome. We demonstrated that both RNAs are expressed simultaneously during growth of S. aureus, and that they interact together. Although the genes encoding these two RNAs are overlapping in the bacterial genome, we have shown that the functional interaction between the two RNAs occurs in trans, involving non-overlapping regions, requiring to reassess regulatory mechanisms of antisense RNA. We also demonstrated that SprA1 RNA is translated and that expression of the SprA1-encoded peptide (pepA1) is inhibited by SprA1AS RNA in vivo. PepA1 is an amphipathic and helical peptide and is detected at the bacterial membrane in vivo. It is also hemolytic and toxic for S. aureus upon over-expression. In the absence of SprA1AS, pepA1 expression causes cell death by permeabilizing bacterial membrane. In addition, pepA1 is weakly antibacterial; it inhibits the growth of several pathogenic strains (Staphylococcus, Escherichia coli, Shigella, Enterococcus, Pseudomonas). A patent was deposited concerning the antimicrobial properties of pepA1. Thus, we demonstrated that SprA1/SprA1AS couple is the first functional toxin-antitoxin system in S. aureus inducing bacterial apoptosis
A stochastic model for human fertility, I by El-Sayed Nour( Book )

1 edition published in 1973 in English and held by 1 WorldCat member library worldwide

A general formulation of the life table by El-Sayed Nour( Book )

1 edition published in 1983 in English and held by 1 WorldCat member library worldwide

 
Audience Level
0
Audience Level
1
  Kids General Special  
Audience level: 0.64 (from 0.51 for A stochast ... to 0.91 for Premier sy ...)

Alternative Names
Nour El Sayed

Nour El Sayed Egyptian association football player

Nour El-Sayed futbolista egipcio

Nour El Sayed joueur de football égyptien

Nour El Sayed voetballer uit Egypte

نور السيد لاعب كرة قدم مصري

Languages