When Long Noncoding Becomes Protein Coding

Molecular and Cellular Biology
Corrine Cr Hartford, Ashish Lal

Abstract

Recent advancements in genetic and proteomic technologies have revealed that more of the genome encodes proteins than originally thought possible. Specifically, some putative long noncoding RNAs (lncRNAs) have been misannotated as noncoding. Numerous lncRNAs have been found to contain short open reading frames (sORFs) which have been overlooked because of their small size. Many of these sORFs encode small proteins or micropeptides with fundamental biological importance. These micropeptides can aid in diverse processes, including cell division, transcription regulation, and cell signaling. Here we discuss strategies for establishing the coding potential of putative lncRNAs and describe various functions of known micropeptides.

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Related Concepts

ORF6 protein, mouse
Size
Signal Transduction
Transcriptional Regulation
Cell Division
Proteomic Profiling
Genome
LARGE protein, human
RNA, Untranslated
Open Reading Frames

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