Article

NELF interacts with CBC and participates in 3' end processing of replication-dependent histone mRNAs.

Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, 4259 Nagatsuta, Yokohama, Kanagawa 226-8501, Japan.
Molecular Cell (impact factor: 14.18). 06/2007; 26(3):349-65. DOI:10.1016/j.molcel.2007.04.011
Source: PubMed

ABSTRACT Negative elongation factor (NELF) is a four subunit transcription elongation factor that has been implicated in numerous diseases ranging from neurological disorders to cancer. Here we show that NELF interacts with the nuclear cap binding complex (CBC), a multifunctional factor that plays important roles in several mRNA processing steps, and the two factors together participate in the 3' end processing of replication-dependent histone mRNAs, most likely through association with the histone stem-loop binding protein (SLBP). Strikingly, absence of NELF and CBC causes aberrant production of polyadenylated histone mRNAs. Moreover, NELF is physically associated with histone gene loci and forms distinct intranuclear foci that we call NELF bodies, which often overlap with Cajal bodies and cleavage bodies. Our results point to a surprising role of NELF in the 3' end processing of histone mRNAs and also suggest that NELF is a new factor that coordinates different mRNA processing steps during transcription.

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Keywords

CBC
 
CBC causes aberrant production
 
cleavage bodies
 
coordinates different mRNA processing steps
 
forms distinct intranuclear foci
 
four subunit transcription elongation factor
 
histone gene loci
 
histone stem-loop binding protein
 
Negative elongation factor
 
NELF
 
NELF interacts
 
neurological disorders
 
nuclear cap binding complex
 
numerous diseases
 
roles
 
Strikingly
 
surprising role