The Enterobacteria rnk leader is a putative attenuator element identified by bioinformatics

Bioinformatics

Bioinformatics is the application of computer science and information technology to the field of biology and medicine. Bioinformatics deals with algorithms, databases and information systems, web technologies, artificial intelligence and soft computing, information and computation theory, software...

 within bacteria of the γ-proteobacterial Enterobacteriales order. It is located upstream of the rnk gene, encoding a nucleoside diphosphate kinase regulator, and presents a Rho-independent terminator

Intrinsic termination

Intrinsic termination is a mechanism in prokaryotes that causes mRNA transcription to be stopped. In this mechanism, the mRNA contains a sequence that can base pair with itself to form a stem-loop structure 7-20 base pairs in length that is also rich in cytosine-guanine base pairs...

 at the 3' end. This RNA

RNA

Ribonucleic acid , or RNA, is one of the three major macromolecules that are essential for all known forms of life....

 is presumed to operate as a non-coding leader, which regulatory mechanism remains to be elucidated. The motif might be related to other rnk-and greA-leaders, such as Pseudomonas rnk leader

Pseudomonas rnk leader

The Pseudomonas rnk leader is a putative attenuator element identified by bioinformatics within bacteria of the γ-proteobacterial Pseudomonas genus. It is located upstream of the rnk gene, encoding a nucleoside diphosphate kinase regulator, and presents a Rho-independent terminator at the 3' end...

.