An overabundance of phase 0 introns immediately after the start codon in eukaryotic genes

Background A knowledge of the positions of introns in eukaryotic genes is important for understanding the evolution of introns. Despite this, there has been relatively little focus on the distribution of intron positions in genes. Results In proteins with signal peptides, there is an overabundance o...
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Gespeichert in:

Autor*in:	Nielsen, Henrik [verfasserIn] Wernersson, Rasmus

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2006

Schlagwörter:	Signal Peptide Start Codon Intron Position Intron Length Intron Loss

Anmerkung:	© Nielsen and Wernersson; licensee BioMed Central Ltd. 2006

Übergeordnetes Werk:	Enthalten in: BMC genomics - London : BioMed Central, 2000, 7(2006), 1 vom: 11. Okt.
Übergeordnetes Werk:	volume:7 ; year:2006 ; number:1 ; day:11 ; month:10

Links:	Volltext

DOI / URN:	10.1186/1471-2164-7-256

Katalog-ID:	SPR027027287

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520			\|a Background A knowledge of the positions of introns in eukaryotic genes is important for understanding the evolution of introns. Despite this, there has been relatively little focus on the distribution of intron positions in genes. Results In proteins with signal peptides, there is an overabundance of phase 1 introns around the region of the signal peptide cleavage site. This has been described before. But in proteins without signal peptides, a novel phenomenon is observed: There is a sharp peak of phase 0 intron positions immediately following the start codon, i.e. between codons 1 and 2. This effect is seen in a wide range of eukaryotes: Vertebrates, arthropods, fungi, and flowering plants. Proteins carrying this start codon intron are found to comprise a special class of relatively short, lysine-rich and conserved proteins with an overrepresentation of ribosomal proteins. In addition, there is a peak of phase 0 introns at position 5 in Drosophila genes with signal peptides, predominantly representing cuticle proteins. Conclusion There is an overabundance of phase 0 introns immediately after the start codon in eukaryotic genes, which has been described before only for human ribosomal proteins. We give a detailed description of these start codon introns and the proteins that contain them.
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author_variant	h n hn r w rw
matchkey_str	article:14712164:2006----::nvrbnacopaeitosmeitlatrhsato
hierarchy_sort_str	2006
publishDate	2006
allfields	10.1186/1471-2164-7-256 doi (DE-627)SPR027027287 (SPR)1471-2164-7-256-e DE-627 ger DE-627 rakwb eng Nielsen, Henrik verfasserin aut An overabundance of phase 0 introns immediately after the start codon in eukaryotic genes 2006 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Nielsen and Wernersson; licensee BioMed Central Ltd. 2006 Background A knowledge of the positions of introns in eukaryotic genes is important for understanding the evolution of introns. Despite this, there has been relatively little focus on the distribution of intron positions in genes. Results In proteins with signal peptides, there is an overabundance of phase 1 introns around the region of the signal peptide cleavage site. This has been described before. But in proteins without signal peptides, a novel phenomenon is observed: There is a sharp peak of phase 0 intron positions immediately following the start codon, i.e. between codons 1 and 2. This effect is seen in a wide range of eukaryotes: Vertebrates, arthropods, fungi, and flowering plants. Proteins carrying this start codon intron are found to comprise a special class of relatively short, lysine-rich and conserved proteins with an overrepresentation of ribosomal proteins. In addition, there is a peak of phase 0 introns at position 5 in Drosophila genes with signal peptides, predominantly representing cuticle proteins. Conclusion There is an overabundance of phase 0 introns immediately after the start codon in eukaryotic genes, which has been described before only for human ribosomal proteins. We give a detailed description of these start codon introns and the proteins that contain them. Signal Peptide (dpeaa)DE-He213 Start Codon (dpeaa)DE-He213 Intron Position (dpeaa)DE-He213 Intron Length (dpeaa)DE-He213 Intron Loss (dpeaa)DE-He213 Wernersson, Rasmus aut Enthalten in BMC genomics London : BioMed Central, 2000 7(2006), 1 vom: 11. Okt. (DE-627)326644954 (DE-600)2041499-7 1471-2164 nnns volume:7 year:2006 number:1 day:11 month:10 https://dx.doi.org/10.1186/1471-2164-7-256 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2190 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 7 2006 1 11 10
spelling	10.1186/1471-2164-7-256 doi (DE-627)SPR027027287 (SPR)1471-2164-7-256-e DE-627 ger DE-627 rakwb eng Nielsen, Henrik verfasserin aut An overabundance of phase 0 introns immediately after the start codon in eukaryotic genes 2006 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Nielsen and Wernersson; licensee BioMed Central Ltd. 2006 Background A knowledge of the positions of introns in eukaryotic genes is important for understanding the evolution of introns. Despite this, there has been relatively little focus on the distribution of intron positions in genes. Results In proteins with signal peptides, there is an overabundance of phase 1 introns around the region of the signal peptide cleavage site. This has been described before. But in proteins without signal peptides, a novel phenomenon is observed: There is a sharp peak of phase 0 intron positions immediately following the start codon, i.e. between codons 1 and 2. This effect is seen in a wide range of eukaryotes: Vertebrates, arthropods, fungi, and flowering plants. Proteins carrying this start codon intron are found to comprise a special class of relatively short, lysine-rich and conserved proteins with an overrepresentation of ribosomal proteins. In addition, there is a peak of phase 0 introns at position 5 in Drosophila genes with signal peptides, predominantly representing cuticle proteins. Conclusion There is an overabundance of phase 0 introns immediately after the start codon in eukaryotic genes, which has been described before only for human ribosomal proteins. We give a detailed description of these start codon introns and the proteins that contain them. Signal Peptide (dpeaa)DE-He213 Start Codon (dpeaa)DE-He213 Intron Position (dpeaa)DE-He213 Intron Length (dpeaa)DE-He213 Intron Loss (dpeaa)DE-He213 Wernersson, Rasmus aut Enthalten in BMC genomics London : BioMed Central, 2000 7(2006), 1 vom: 11. Okt. (DE-627)326644954 (DE-600)2041499-7 1471-2164 nnns volume:7 year:2006 number:1 day:11 month:10 https://dx.doi.org/10.1186/1471-2164-7-256 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2190 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 7 2006 1 11 10
allfields_unstemmed	10.1186/1471-2164-7-256 doi (DE-627)SPR027027287 (SPR)1471-2164-7-256-e DE-627 ger DE-627 rakwb eng Nielsen, Henrik verfasserin aut An overabundance of phase 0 introns immediately after the start codon in eukaryotic genes 2006 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Nielsen and Wernersson; licensee BioMed Central Ltd. 2006 Background A knowledge of the positions of introns in eukaryotic genes is important for understanding the evolution of introns. Despite this, there has been relatively little focus on the distribution of intron positions in genes. Results In proteins with signal peptides, there is an overabundance of phase 1 introns around the region of the signal peptide cleavage site. This has been described before. But in proteins without signal peptides, a novel phenomenon is observed: There is a sharp peak of phase 0 intron positions immediately following the start codon, i.e. between codons 1 and 2. This effect is seen in a wide range of eukaryotes: Vertebrates, arthropods, fungi, and flowering plants. Proteins carrying this start codon intron are found to comprise a special class of relatively short, lysine-rich and conserved proteins with an overrepresentation of ribosomal proteins. In addition, there is a peak of phase 0 introns at position 5 in Drosophila genes with signal peptides, predominantly representing cuticle proteins. Conclusion There is an overabundance of phase 0 introns immediately after the start codon in eukaryotic genes, which has been described before only for human ribosomal proteins. We give a detailed description of these start codon introns and the proteins that contain them. Signal Peptide (dpeaa)DE-He213 Start Codon (dpeaa)DE-He213 Intron Position (dpeaa)DE-He213 Intron Length (dpeaa)DE-He213 Intron Loss (dpeaa)DE-He213 Wernersson, Rasmus aut Enthalten in BMC genomics London : BioMed Central, 2000 7(2006), 1 vom: 11. Okt. (DE-627)326644954 (DE-600)2041499-7 1471-2164 nnns volume:7 year:2006 number:1 day:11 month:10 https://dx.doi.org/10.1186/1471-2164-7-256 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2190 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 7 2006 1 11 10
allfieldsGer	10.1186/1471-2164-7-256 doi (DE-627)SPR027027287 (SPR)1471-2164-7-256-e DE-627 ger DE-627 rakwb eng Nielsen, Henrik verfasserin aut An overabundance of phase 0 introns immediately after the start codon in eukaryotic genes 2006 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Nielsen and Wernersson; licensee BioMed Central Ltd. 2006 Background A knowledge of the positions of introns in eukaryotic genes is important for understanding the evolution of introns. Despite this, there has been relatively little focus on the distribution of intron positions in genes. Results In proteins with signal peptides, there is an overabundance of phase 1 introns around the region of the signal peptide cleavage site. This has been described before. But in proteins without signal peptides, a novel phenomenon is observed: There is a sharp peak of phase 0 intron positions immediately following the start codon, i.e. between codons 1 and 2. This effect is seen in a wide range of eukaryotes: Vertebrates, arthropods, fungi, and flowering plants. Proteins carrying this start codon intron are found to comprise a special class of relatively short, lysine-rich and conserved proteins with an overrepresentation of ribosomal proteins. In addition, there is a peak of phase 0 introns at position 5 in Drosophila genes with signal peptides, predominantly representing cuticle proteins. Conclusion There is an overabundance of phase 0 introns immediately after the start codon in eukaryotic genes, which has been described before only for human ribosomal proteins. We give a detailed description of these start codon introns and the proteins that contain them. Signal Peptide (dpeaa)DE-He213 Start Codon (dpeaa)DE-He213 Intron Position (dpeaa)DE-He213 Intron Length (dpeaa)DE-He213 Intron Loss (dpeaa)DE-He213 Wernersson, Rasmus aut Enthalten in BMC genomics London : BioMed Central, 2000 7(2006), 1 vom: 11. Okt. (DE-627)326644954 (DE-600)2041499-7 1471-2164 nnns volume:7 year:2006 number:1 day:11 month:10 https://dx.doi.org/10.1186/1471-2164-7-256 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2190 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 7 2006 1 11 10
allfieldsSound	10.1186/1471-2164-7-256 doi (DE-627)SPR027027287 (SPR)1471-2164-7-256-e DE-627 ger DE-627 rakwb eng Nielsen, Henrik verfasserin aut An overabundance of phase 0 introns immediately after the start codon in eukaryotic genes 2006 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Nielsen and Wernersson; licensee BioMed Central Ltd. 2006 Background A knowledge of the positions of introns in eukaryotic genes is important for understanding the evolution of introns. Despite this, there has been relatively little focus on the distribution of intron positions in genes. Results In proteins with signal peptides, there is an overabundance of phase 1 introns around the region of the signal peptide cleavage site. This has been described before. But in proteins without signal peptides, a novel phenomenon is observed: There is a sharp peak of phase 0 intron positions immediately following the start codon, i.e. between codons 1 and 2. This effect is seen in a wide range of eukaryotes: Vertebrates, arthropods, fungi, and flowering plants. Proteins carrying this start codon intron are found to comprise a special class of relatively short, lysine-rich and conserved proteins with an overrepresentation of ribosomal proteins. In addition, there is a peak of phase 0 introns at position 5 in Drosophila genes with signal peptides, predominantly representing cuticle proteins. Conclusion There is an overabundance of phase 0 introns immediately after the start codon in eukaryotic genes, which has been described before only for human ribosomal proteins. We give a detailed description of these start codon introns and the proteins that contain them. Signal Peptide (dpeaa)DE-He213 Start Codon (dpeaa)DE-He213 Intron Position (dpeaa)DE-He213 Intron Length (dpeaa)DE-He213 Intron Loss (dpeaa)DE-He213 Wernersson, Rasmus aut Enthalten in BMC genomics London : BioMed Central, 2000 7(2006), 1 vom: 11. Okt. (DE-627)326644954 (DE-600)2041499-7 1471-2164 nnns volume:7 year:2006 number:1 day:11 month:10 https://dx.doi.org/10.1186/1471-2164-7-256 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2190 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 7 2006 1 11 10
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source	Enthalten in BMC genomics 7(2006), 1 vom: 11. Okt. volume:7 year:2006 number:1 day:11 month:10
sourceStr	Enthalten in BMC genomics 7(2006), 1 vom: 11. Okt. volume:7 year:2006 number:1 day:11 month:10
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author	Nielsen, Henrik
spellingShingle	Nielsen, Henrik misc Signal Peptide misc Start Codon misc Intron Position misc Intron Length misc Intron Loss An overabundance of phase 0 introns immediately after the start codon in eukaryotic genes
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topic_title	An overabundance of phase 0 introns immediately after the start codon in eukaryotic genes Signal Peptide (dpeaa)DE-He213 Start Codon (dpeaa)DE-He213 Intron Position (dpeaa)DE-He213 Intron Length (dpeaa)DE-He213 Intron Loss (dpeaa)DE-He213
topic	misc Signal Peptide misc Start Codon misc Intron Position misc Intron Length misc Intron Loss
topic_unstemmed	misc Signal Peptide misc Start Codon misc Intron Position misc Intron Length misc Intron Loss
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title	An overabundance of phase 0 introns immediately after the start codon in eukaryotic genes
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title_full	An overabundance of phase 0 introns immediately after the start codon in eukaryotic genes
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author_browse	Nielsen, Henrik Wernersson, Rasmus
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format_se	Elektronische Aufsätze
author-letter	Nielsen, Henrik
doi_str_mv	10.1186/1471-2164-7-256
title_sort	overabundance of phase 0 introns immediately after the start codon in eukaryotic genes
title_auth	An overabundance of phase 0 introns immediately after the start codon in eukaryotic genes
abstract	Background A knowledge of the positions of introns in eukaryotic genes is important for understanding the evolution of introns. Despite this, there has been relatively little focus on the distribution of intron positions in genes. Results In proteins with signal peptides, there is an overabundance of phase 1 introns around the region of the signal peptide cleavage site. This has been described before. But in proteins without signal peptides, a novel phenomenon is observed: There is a sharp peak of phase 0 intron positions immediately following the start codon, i.e. between codons 1 and 2. This effect is seen in a wide range of eukaryotes: Vertebrates, arthropods, fungi, and flowering plants. Proteins carrying this start codon intron are found to comprise a special class of relatively short, lysine-rich and conserved proteins with an overrepresentation of ribosomal proteins. In addition, there is a peak of phase 0 introns at position 5 in Drosophila genes with signal peptides, predominantly representing cuticle proteins. Conclusion There is an overabundance of phase 0 introns immediately after the start codon in eukaryotic genes, which has been described before only for human ribosomal proteins. We give a detailed description of these start codon introns and the proteins that contain them. © Nielsen and Wernersson; licensee BioMed Central Ltd. 2006
abstractGer	Background A knowledge of the positions of introns in eukaryotic genes is important for understanding the evolution of introns. Despite this, there has been relatively little focus on the distribution of intron positions in genes. Results In proteins with signal peptides, there is an overabundance of phase 1 introns around the region of the signal peptide cleavage site. This has been described before. But in proteins without signal peptides, a novel phenomenon is observed: There is a sharp peak of phase 0 intron positions immediately following the start codon, i.e. between codons 1 and 2. This effect is seen in a wide range of eukaryotes: Vertebrates, arthropods, fungi, and flowering plants. Proteins carrying this start codon intron are found to comprise a special class of relatively short, lysine-rich and conserved proteins with an overrepresentation of ribosomal proteins. In addition, there is a peak of phase 0 introns at position 5 in Drosophila genes with signal peptides, predominantly representing cuticle proteins. Conclusion There is an overabundance of phase 0 introns immediately after the start codon in eukaryotic genes, which has been described before only for human ribosomal proteins. We give a detailed description of these start codon introns and the proteins that contain them. © Nielsen and Wernersson; licensee BioMed Central Ltd. 2006
abstract_unstemmed	Background A knowledge of the positions of introns in eukaryotic genes is important for understanding the evolution of introns. Despite this, there has been relatively little focus on the distribution of intron positions in genes. Results In proteins with signal peptides, there is an overabundance of phase 1 introns around the region of the signal peptide cleavage site. This has been described before. But in proteins without signal peptides, a novel phenomenon is observed: There is a sharp peak of phase 0 intron positions immediately following the start codon, i.e. between codons 1 and 2. This effect is seen in a wide range of eukaryotes: Vertebrates, arthropods, fungi, and flowering plants. Proteins carrying this start codon intron are found to comprise a special class of relatively short, lysine-rich and conserved proteins with an overrepresentation of ribosomal proteins. In addition, there is a peak of phase 0 introns at position 5 in Drosophila genes with signal peptides, predominantly representing cuticle proteins. Conclusion There is an overabundance of phase 0 introns immediately after the start codon in eukaryotic genes, which has been described before only for human ribosomal proteins. We give a detailed description of these start codon introns and the proteins that contain them. © Nielsen and Wernersson; licensee BioMed Central Ltd. 2006
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title_short	An overabundance of phase 0 introns immediately after the start codon in eukaryotic genes
url	https://dx.doi.org/10.1186/1471-2164-7-256
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doi_str	10.1186/1471-2164-7-256
up_date	2024-07-04T00:00:11.718Z
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Conclusion There is an overabundance of phase 0 introns immediately after the start codon in eukaryotic genes, which has been described before only for human ribosomal proteins. 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An overabundance of phase 0 introns immediately after the start codon in eukaryotic genes

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