Nuclear size effects in rotational spectra: A tale with a twist

SecA—a New Twist in the Tale

A paper published in this issue of the Journal of Bacteriology (D. Huber, M. Jamshad, R. Hanmer, D. Schibich, K. Döring, I. Marcomini, G. Kramer, and B. Bukau, J Bacteriol 199:e0622-16, 2017, https://doi.org/10.1128/JB.00622-16) provides us with a timely reminder that all is not as clear as we had previously thought in the general bacterial secretion system. The paper describes a new mode of se...

A Tertiary Twist to the Transglutaminase Tale

T issue transglutaminase (TG2) is one of a family of enzymes that covalently crosslink proteins by binding a glutamine in one protein with a lysine in another [1]. There is strong evidence that links the deregulated expression of TG2 to a variety of diseases, and although the exact role of TG2 in neurodegenerative diseases is unclear [2], in celiac disease (CD), TG2 catalyses the formation of i...

Apoptosis: A new twist to the tale?

The p53 protein is best known as the product of a tumour suppressor gene, but it also plays a pivotal role in the coordination of adaptive cellular responses to stress, whether due to hypoxia, metabolic disarray or DNA damage. The activation or expression of wild-type p53 in many types of cell results in cell-cycle arrest. Other types of cell, however, undergo rapid apoptotic death following th...

A Nuclear Winter’s Tale

Nuclear higher-twist effects in eA DIS

We discuss the relation between the treatments of the higher twist nuclear effects in eA DIS based on the pQCD collinear approximation and the light-cone path integral formalism. We show that in the collinear approximation the N =1 rescattering contribution to the gluon emission vanishes. It is demonstrated that the nonzero gluon spectrum obtained by Guo, Wang and Zhang is a consequence of unju...