Journal Title
Title of Journal: Funct Integr Genomics
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Abbravation: Functional & Integrative Genomics
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Publisher
Springer-Verlag
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Authors: Mukesh Jain Paramjit Khurana Akhilesh K Tyagi Jitendra P Khurana
Publish Date: 2007/06/20
Volume: 8, Issue: 1, Pages: 69-78
Abstract
Intronless genes a characteristic feature of prokaryotes constitute a significant portion of the eukaryotic genomes Our analysis revealed the presence of 11109 199 and 5846 217 intronless genes in rice and Arabidopsis genomes respectively belonging to different cellular role and gene ontology categories The distribution and conservation of rice and Arabidopsis intronless genes among different taxonomic groups have been analyzed A total of 301 and 296 intronless genes from rice and Arabidopsis respectively are conserved among organisms representing the three major domains of life ie archaea bacteria and eukaryotes These evolutionarily conserved proteins are predicted to be involved in housekeeping cellular functions Interestingly among the 68 of rice and 77 of Arabidopsis intronless genes present only in eukaryotic genomes approximately 51 and 57 genes have orthologs only in plants and thus may represent the plantspecific genes Furthermore 831 and 144 intronless genes of rice and Arabidopsis respectively referred to as ORFans do not exhibit homology to any of the genes in the database and may perform speciesspecific functions These data can serve as a resource for further comparative evolutionary and functional analysis of intronless genes in plants and other organismsWe are thankful to Rashmi Jain for technical assistance This work was supported financially by the Department of Biotechnology Government of India and the University Grants Commission New Delhi MJ acknowledges the Council of Scientific and Industrial Research New Delhi for the award of Senior Research Fellowship
Keywords:
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Other Papers In This Journal:
- Control of flowering time and spike development in cereals: the earliness per se Eps-1 region in wheat, rice, and Brachypodium
- The R2R3-MYB, bHLH, WD40, and related transcription factors in flavonoid biosynthesis
- miRNA-based drought regulation in wheat
- Comparative genomics and functional analysis of the NiaP family uncover nicotinate transporters from bacteria, plants, and mammals
- Integrated protein network and microarray analysis to identify potential biomarkers after myocardial infarction
- Comparative analysis of expressed sequence tags from different organs of Vitis vinifera L.
- Single-copy genes define a conserved order between rice and wheat for understanding differences caused by duplication, deletion, and transposition of genes
- Identification of candidate genes JcARF19 and JcIAA9 associated with seed size traits in Jatropha
- Genome-wide expression profiling in Geobacter sulfurreducens : identification of Fur and RpoS transcription regulatory sites in a rel Gsu mutant
- Empirical Bayes estimation of gene-specific effects in micro-array research
- Phytoremediation and phytosensing of chemical contaminants, RDX and TNT: identification of the required target genes
- Os11Gsk gene from a wild rice, Oryza rufipogon improves yield in rice
- Genomic sequencing reveals gene content, genomic organization, and recombination relationships in barley
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