TY - JOUR
T1 - Transcriptome complexity in a genome-reduced bacterium.
AU - Güell, Marc
AU - van Noort, Vera
AU - Yus, Eva
AU - Chen, Wei-Hua
AU - Leigh-Bell, Justine
AU - Michalodimitrakis, Konstantinos
AU - Yamada, Takuji
AU - Arumugam, Manimozhiyan
AU - Doerks, Tobias
AU - Kühner, Sebastian
AU - Rode, Michaela
AU - Suyama, Mikita
AU - Schmidt, Sabine
AU - Gavin, Anne-Claude
AU - Bork, Peer
AU - Serrano, Luis
PY - 2009/11
Y1 - 2009/11
N2 - To study basic principles of transcriptome organization in bacteria, we analyzed one of the smallest self-replicating organisms, Mycoplasma pneumoniae. We combined strand-specific tiling arrays, complemented by transcriptome sequencing, with more than 252 spotted arrays. We detected 117 previously undescribed, mostly noncoding transcripts, 89 of them in antisense configuration to known genes. We identified 341 operons, of which 139 are polycistronic; almost half of the latter show decaying expression in a staircase-like manner. Under various conditions, operons could be divided into 447 smaller transcriptional units, resulting in many alternative transcripts. Frequent antisense transcripts, alternative transcripts, and multiple regulators per gene imply a highly dynamic transcriptome, more similar to that of eukaryotes than previously thought.
AB - To study basic principles of transcriptome organization in bacteria, we analyzed one of the smallest self-replicating organisms, Mycoplasma pneumoniae. We combined strand-specific tiling arrays, complemented by transcriptome sequencing, with more than 252 spotted arrays. We detected 117 previously undescribed, mostly noncoding transcripts, 89 of them in antisense configuration to known genes. We identified 341 operons, of which 139 are polycistronic; almost half of the latter show decaying expression in a staircase-like manner. Under various conditions, operons could be divided into 447 smaller transcriptional units, resulting in many alternative transcripts. Frequent antisense transcripts, alternative transcripts, and multiple regulators per gene imply a highly dynamic transcriptome, more similar to that of eukaryotes than previously thought.
KW - Antisense
KW - Antisense: genetics
KW - Antisense: metabolism
KW - Bacterial
KW - Bacterial: genetics
KW - Bacterial: metabolism
KW - Base Sequence
KW - Gene Expression Profiling
KW - Gene Expression Regulation
KW - Genes
KW - Genetic
KW - Genome
KW - Messenger
KW - Messenger: genetics
KW - Messenger: metabolism
KW - Molecular Sequence Data
KW - Mycoplasma pneumoniae
KW - Mycoplasma pneumoniae: genetics
KW - Mycoplasma pneumoniae: metabolism
KW - Oligonucleotide Array Sequence Analysis
KW - Operon
KW - RNA
KW - Transcription
KW - Untranslated
KW - Untranslated: analysis
KW - Untranslated: genetics
U2 - 10.1126/science.1176951
DO - 10.1126/science.1176951
M3 - Journal article
SN - 0036-8075
VL - 326
SP - 1268
EP - 1271
JO - Science
JF - Science
IS - 5957
ER -