PMID- 21103382 OWN - NLM STAT- MEDLINE DCOM- 20110427 LR - 20211020 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 5 IP - 11 DP - 2010 Nov 16 TI - A complete set of nascent transcription rates for yeast genes. PG - e15442 LID - 10.1371/journal.pone.0015442 [doi] LID - e15442 AB - The amount of mRNA in a cell is the result of two opposite reactions: transcription and mRNA degradation. These reactions are governed by kinetics laws, and the most regulated step for many genes is the transcription rate. The transcription rate, which is assumed to be exercised mainly at the RNA polymerase recruitment level, can be calculated using the RNA polymerase densities determined either by run-on or immunoprecipitation using specific antibodies. The yeast Saccharomyces cerevisiae is the ideal model organism to generate a complete set of nascent transcription rates that will prove useful for many gene regulation studies. By combining genomic data from both the GRO (Genomic Run-on) and the RNA pol ChIP-on-chip methods we generated a new, more accurate nascent transcription rate dataset. By comparing this dataset with the indirect ones obtained from the mRNA stabilities and mRNA amount datasets, we are able to obtain biological information about posttranscriptional regulation processes and a genomic snapshot of the location of the active transcriptional machinery. We have obtained nascent transcription rates for 4,670 yeast genes. The median RNA polymerase II density in the genes is 0.078 molecules/kb, which corresponds to an average of 0.096 molecules/gene. Most genes have transcription rates of between 2 and 30 mRNAs/hour and less than 1% of yeast genes have >1 RNA polymerase molecule/gene. Histone and ribosomal protein genes are the highest transcribed groups of genes and other than these exceptions the transcription of genes is an infrequent phenomenon in a yeast cell. FAU - Pelechano, Vicent AU - Pelechano V AD - Departamento de Bioquimica y Biologia Molecular, Facultad de Ciencias Biologicas, Universitat de Valencia, Burjassot, Spain. FAU - Chavez, Sebastian AU - Chavez S FAU - Perez-Ortin, Jose E AU - Perez-Ortin JE LA - eng SI - GEO/GSE11521 SI - GEO/GSE13096 SI - GEO/GSE14060 PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20101116 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - 0 (Chromatin) RN - 0 (RNA, Messenger) RN - 0 (Saccharomyces cerevisiae Proteins) RN - EC 2.7.7.- (RNA Polymerase II) SB - IM EIN - PLoS One. 2014;9(12):e115560 MH - Chromatin/genetics/metabolism MH - *Gene Expression Profiling MH - Gene Expression Regulation, Fungal MH - Genes, Fungal/genetics MH - RNA Polymerase II/genetics/metabolism MH - RNA Stability MH - RNA, Messenger/genetics/metabolism MH - Saccharomyces cerevisiae/*genetics MH - Saccharomyces cerevisiae Proteins/*genetics MH - Transcription, Genetic/*genetics PMC - PMC2982843 COIS- Competing Interests: The authors have declared that no competing interests exist. EDAT- 2010/11/26 06:00 MHDA- 2011/04/28 06:00 PMCR- 2010/11/16 CRDT- 2010/11/25 06:00 PHST- 2010/08/12 00:00 [received] PHST- 2010/09/21 00:00 [accepted] PHST- 2010/11/25 06:00 [entrez] PHST- 2010/11/26 06:00 [pubmed] PHST- 2011/04/28 06:00 [medline] PHST- 2010/11/16 00:00 [pmc-release] AID - PONE-D-10-00658 [pii] AID - 10.1371/journal.pone.0015442 [doi] PST - epublish SO - PLoS One. 2010 Nov 16;5(11):e15442. doi: 10.1371/journal.pone.0015442.