Exploring the selective constraint on the sizes of insertions and deletions in 5' untranslated regions in mammals

Background Small insertions and deletions ("indels" with size ≦ 100 bp) whose lengths are not multiples of three (non-3n) are strongly constrained and depleted in protein-coding sequences. Such a constraint has never been reported in noncoding genomic regions. In 5'untranslated region...
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Autor*in:	Chen, Chun-Hsi [verfasserIn] Liao, Ben-Yang Chen, Feng-Chi

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2011

Schlagwörter:	Selective Constraint Upstream Open Reading Frame Mouse Transcript Indel Length Mouse Orthologous Gene

Anmerkung:	© Chen et al; licensee BioMed Central Ltd. 2011

Übergeordnetes Werk:	Enthalten in: BMC evolutionary biology - London : BioMed Central, 2001, 11(2011), 1 vom: 05. Juli
Übergeordnetes Werk:	volume:11 ; year:2011 ; number:1 ; day:05 ; month:07

Links:	Volltext

DOI / URN:	10.1186/1471-2148-11-192

Katalog-ID:	SPR026971690

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100	1		\|a Chen, Chun-Hsi \|e verfasserin \|4 aut
245	1	0	\|a Exploring the selective constraint on the sizes of insertions and deletions in 5' untranslated regions in mammals
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520			\|a Background Small insertions and deletions ("indels" with size ≦ 100 bp) whose lengths are not multiples of three (non-3n) are strongly constrained and depleted in protein-coding sequences. Such a constraint has never been reported in noncoding genomic regions. In 5'untranslated regions (5'UTRs) in mammalian genomes, upstream start codons (uAUGs) and upstream open reading frames (uORFs) can regulate protein translation. The presence of non-3n indels in uORFs can potentially disrupt the functions of these regulatory elements. We thus hypothesize that natural selection disfavors non-3n indels in 5'UTRs when these regulatory elements are present. Results We design the Indel Selection Index to measure the selective constraint on non-3n indels in 5'UTRs. The index controls for the genomic compositions of the analyzed 5'UTRs and measures the probability of non-3n indel depletion downstream of uAUGs. By comparing the experimentally supported transcripts of human-mouse orthologous genes, we demonstrate that non-3n indels downstream of two types of uAUGs (alternative translation initiation sites and the uAUGs of coding sequence-overlapping uORFs) are underrepresented. The results hold well regardless of differences in alignment tool, gene structures between human and mouse, or the criteria in selecting alternatively spliced isoforms used for the analysis. Conclusions To our knowledge, this is the first study to demonstrate selective constraints on non-3n indels in 5'UTRs. Such constraints may be associated with the regulatory functions of uAUGs/uORFs in translational regulation or the generation of protein isoforms. Our study thus brings a new perspective to the evolution of 5'UTRs in mammals.
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allfields	10.1186/1471-2148-11-192 doi (DE-627)SPR026971690 (SPR)1471-2148-11-192-e DE-627 ger DE-627 rakwb eng Chen, Chun-Hsi verfasserin aut Exploring the selective constraint on the sizes of insertions and deletions in 5' untranslated regions in mammals 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Chen et al; licensee BioMed Central Ltd. 2011 Background Small insertions and deletions ("indels" with size ≦ 100 bp) whose lengths are not multiples of three (non-3n) are strongly constrained and depleted in protein-coding sequences. Such a constraint has never been reported in noncoding genomic regions. In 5'untranslated regions (5'UTRs) in mammalian genomes, upstream start codons (uAUGs) and upstream open reading frames (uORFs) can regulate protein translation. The presence of non-3n indels in uORFs can potentially disrupt the functions of these regulatory elements. We thus hypothesize that natural selection disfavors non-3n indels in 5'UTRs when these regulatory elements are present. Results We design the Indel Selection Index to measure the selective constraint on non-3n indels in 5'UTRs. The index controls for the genomic compositions of the analyzed 5'UTRs and measures the probability of non-3n indel depletion downstream of uAUGs. By comparing the experimentally supported transcripts of human-mouse orthologous genes, we demonstrate that non-3n indels downstream of two types of uAUGs (alternative translation initiation sites and the uAUGs of coding sequence-overlapping uORFs) are underrepresented. The results hold well regardless of differences in alignment tool, gene structures between human and mouse, or the criteria in selecting alternatively spliced isoforms used for the analysis. Conclusions To our knowledge, this is the first study to demonstrate selective constraints on non-3n indels in 5'UTRs. Such constraints may be associated with the regulatory functions of uAUGs/uORFs in translational regulation or the generation of protein isoforms. Our study thus brings a new perspective to the evolution of 5'UTRs in mammals. Selective Constraint (dpeaa)DE-He213 Upstream Open Reading Frame (dpeaa)DE-He213 Mouse Transcript (dpeaa)DE-He213 Indel Length (dpeaa)DE-He213 Mouse Orthologous Gene (dpeaa)DE-He213 Liao, Ben-Yang aut Chen, Feng-Chi aut Enthalten in BMC evolutionary biology London : BioMed Central, 2001 11(2011), 1 vom: 05. Juli (DE-627)32664489X (DE-600)2041493-6 1471-2148 nnns volume:11 year:2011 number:1 day:05 month:07 https://dx.doi.org/10.1186/1471-2148-11-192 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 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 11 2011 1 05 07
spelling	10.1186/1471-2148-11-192 doi (DE-627)SPR026971690 (SPR)1471-2148-11-192-e DE-627 ger DE-627 rakwb eng Chen, Chun-Hsi verfasserin aut Exploring the selective constraint on the sizes of insertions and deletions in 5' untranslated regions in mammals 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Chen et al; licensee BioMed Central Ltd. 2011 Background Small insertions and deletions ("indels" with size ≦ 100 bp) whose lengths are not multiples of three (non-3n) are strongly constrained and depleted in protein-coding sequences. Such a constraint has never been reported in noncoding genomic regions. In 5'untranslated regions (5'UTRs) in mammalian genomes, upstream start codons (uAUGs) and upstream open reading frames (uORFs) can regulate protein translation. The presence of non-3n indels in uORFs can potentially disrupt the functions of these regulatory elements. We thus hypothesize that natural selection disfavors non-3n indels in 5'UTRs when these regulatory elements are present. Results We design the Indel Selection Index to measure the selective constraint on non-3n indels in 5'UTRs. The index controls for the genomic compositions of the analyzed 5'UTRs and measures the probability of non-3n indel depletion downstream of uAUGs. By comparing the experimentally supported transcripts of human-mouse orthologous genes, we demonstrate that non-3n indels downstream of two types of uAUGs (alternative translation initiation sites and the uAUGs of coding sequence-overlapping uORFs) are underrepresented. The results hold well regardless of differences in alignment tool, gene structures between human and mouse, or the criteria in selecting alternatively spliced isoforms used for the analysis. Conclusions To our knowledge, this is the first study to demonstrate selective constraints on non-3n indels in 5'UTRs. Such constraints may be associated with the regulatory functions of uAUGs/uORFs in translational regulation or the generation of protein isoforms. Our study thus brings a new perspective to the evolution of 5'UTRs in mammals. Selective Constraint (dpeaa)DE-He213 Upstream Open Reading Frame (dpeaa)DE-He213 Mouse Transcript (dpeaa)DE-He213 Indel Length (dpeaa)DE-He213 Mouse Orthologous Gene (dpeaa)DE-He213 Liao, Ben-Yang aut Chen, Feng-Chi aut Enthalten in BMC evolutionary biology London : BioMed Central, 2001 11(2011), 1 vom: 05. Juli (DE-627)32664489X (DE-600)2041493-6 1471-2148 nnns volume:11 year:2011 number:1 day:05 month:07 https://dx.doi.org/10.1186/1471-2148-11-192 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 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 11 2011 1 05 07
allfields_unstemmed	10.1186/1471-2148-11-192 doi (DE-627)SPR026971690 (SPR)1471-2148-11-192-e DE-627 ger DE-627 rakwb eng Chen, Chun-Hsi verfasserin aut Exploring the selective constraint on the sizes of insertions and deletions in 5' untranslated regions in mammals 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Chen et al; licensee BioMed Central Ltd. 2011 Background Small insertions and deletions ("indels" with size ≦ 100 bp) whose lengths are not multiples of three (non-3n) are strongly constrained and depleted in protein-coding sequences. Such a constraint has never been reported in noncoding genomic regions. In 5'untranslated regions (5'UTRs) in mammalian genomes, upstream start codons (uAUGs) and upstream open reading frames (uORFs) can regulate protein translation. The presence of non-3n indels in uORFs can potentially disrupt the functions of these regulatory elements. We thus hypothesize that natural selection disfavors non-3n indels in 5'UTRs when these regulatory elements are present. Results We design the Indel Selection Index to measure the selective constraint on non-3n indels in 5'UTRs. The index controls for the genomic compositions of the analyzed 5'UTRs and measures the probability of non-3n indel depletion downstream of uAUGs. By comparing the experimentally supported transcripts of human-mouse orthologous genes, we demonstrate that non-3n indels downstream of two types of uAUGs (alternative translation initiation sites and the uAUGs of coding sequence-overlapping uORFs) are underrepresented. The results hold well regardless of differences in alignment tool, gene structures between human and mouse, or the criteria in selecting alternatively spliced isoforms used for the analysis. Conclusions To our knowledge, this is the first study to demonstrate selective constraints on non-3n indels in 5'UTRs. Such constraints may be associated with the regulatory functions of uAUGs/uORFs in translational regulation or the generation of protein isoforms. Our study thus brings a new perspective to the evolution of 5'UTRs in mammals. Selective Constraint (dpeaa)DE-He213 Upstream Open Reading Frame (dpeaa)DE-He213 Mouse Transcript (dpeaa)DE-He213 Indel Length (dpeaa)DE-He213 Mouse Orthologous Gene (dpeaa)DE-He213 Liao, Ben-Yang aut Chen, Feng-Chi aut Enthalten in BMC evolutionary biology London : BioMed Central, 2001 11(2011), 1 vom: 05. Juli (DE-627)32664489X (DE-600)2041493-6 1471-2148 nnns volume:11 year:2011 number:1 day:05 month:07 https://dx.doi.org/10.1186/1471-2148-11-192 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 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 11 2011 1 05 07
allfieldsGer	10.1186/1471-2148-11-192 doi (DE-627)SPR026971690 (SPR)1471-2148-11-192-e DE-627 ger DE-627 rakwb eng Chen, Chun-Hsi verfasserin aut Exploring the selective constraint on the sizes of insertions and deletions in 5' untranslated regions in mammals 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Chen et al; licensee BioMed Central Ltd. 2011 Background Small insertions and deletions ("indels" with size ≦ 100 bp) whose lengths are not multiples of three (non-3n) are strongly constrained and depleted in protein-coding sequences. Such a constraint has never been reported in noncoding genomic regions. In 5'untranslated regions (5'UTRs) in mammalian genomes, upstream start codons (uAUGs) and upstream open reading frames (uORFs) can regulate protein translation. The presence of non-3n indels in uORFs can potentially disrupt the functions of these regulatory elements. We thus hypothesize that natural selection disfavors non-3n indels in 5'UTRs when these regulatory elements are present. Results We design the Indel Selection Index to measure the selective constraint on non-3n indels in 5'UTRs. The index controls for the genomic compositions of the analyzed 5'UTRs and measures the probability of non-3n indel depletion downstream of uAUGs. By comparing the experimentally supported transcripts of human-mouse orthologous genes, we demonstrate that non-3n indels downstream of two types of uAUGs (alternative translation initiation sites and the uAUGs of coding sequence-overlapping uORFs) are underrepresented. The results hold well regardless of differences in alignment tool, gene structures between human and mouse, or the criteria in selecting alternatively spliced isoforms used for the analysis. Conclusions To our knowledge, this is the first study to demonstrate selective constraints on non-3n indels in 5'UTRs. Such constraints may be associated with the regulatory functions of uAUGs/uORFs in translational regulation or the generation of protein isoforms. Our study thus brings a new perspective to the evolution of 5'UTRs in mammals. Selective Constraint (dpeaa)DE-He213 Upstream Open Reading Frame (dpeaa)DE-He213 Mouse Transcript (dpeaa)DE-He213 Indel Length (dpeaa)DE-He213 Mouse Orthologous Gene (dpeaa)DE-He213 Liao, Ben-Yang aut Chen, Feng-Chi aut Enthalten in BMC evolutionary biology London : BioMed Central, 2001 11(2011), 1 vom: 05. Juli (DE-627)32664489X (DE-600)2041493-6 1471-2148 nnns volume:11 year:2011 number:1 day:05 month:07 https://dx.doi.org/10.1186/1471-2148-11-192 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 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 11 2011 1 05 07
allfieldsSound	10.1186/1471-2148-11-192 doi (DE-627)SPR026971690 (SPR)1471-2148-11-192-e DE-627 ger DE-627 rakwb eng Chen, Chun-Hsi verfasserin aut Exploring the selective constraint on the sizes of insertions and deletions in 5' untranslated regions in mammals 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Chen et al; licensee BioMed Central Ltd. 2011 Background Small insertions and deletions ("indels" with size ≦ 100 bp) whose lengths are not multiples of three (non-3n) are strongly constrained and depleted in protein-coding sequences. Such a constraint has never been reported in noncoding genomic regions. In 5'untranslated regions (5'UTRs) in mammalian genomes, upstream start codons (uAUGs) and upstream open reading frames (uORFs) can regulate protein translation. The presence of non-3n indels in uORFs can potentially disrupt the functions of these regulatory elements. We thus hypothesize that natural selection disfavors non-3n indels in 5'UTRs when these regulatory elements are present. Results We design the Indel Selection Index to measure the selective constraint on non-3n indels in 5'UTRs. The index controls for the genomic compositions of the analyzed 5'UTRs and measures the probability of non-3n indel depletion downstream of uAUGs. By comparing the experimentally supported transcripts of human-mouse orthologous genes, we demonstrate that non-3n indels downstream of two types of uAUGs (alternative translation initiation sites and the uAUGs of coding sequence-overlapping uORFs) are underrepresented. The results hold well regardless of differences in alignment tool, gene structures between human and mouse, or the criteria in selecting alternatively spliced isoforms used for the analysis. Conclusions To our knowledge, this is the first study to demonstrate selective constraints on non-3n indels in 5'UTRs. Such constraints may be associated with the regulatory functions of uAUGs/uORFs in translational regulation or the generation of protein isoforms. Our study thus brings a new perspective to the evolution of 5'UTRs in mammals. Selective Constraint (dpeaa)DE-He213 Upstream Open Reading Frame (dpeaa)DE-He213 Mouse Transcript (dpeaa)DE-He213 Indel Length (dpeaa)DE-He213 Mouse Orthologous Gene (dpeaa)DE-He213 Liao, Ben-Yang aut Chen, Feng-Chi aut Enthalten in BMC evolutionary biology London : BioMed Central, 2001 11(2011), 1 vom: 05. Juli (DE-627)32664489X (DE-600)2041493-6 1471-2148 nnns volume:11 year:2011 number:1 day:05 month:07 https://dx.doi.org/10.1186/1471-2148-11-192 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 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 11 2011 1 05 07
language	English
source	Enthalten in BMC evolutionary biology 11(2011), 1 vom: 05. Juli volume:11 year:2011 number:1 day:05 month:07
sourceStr	Enthalten in BMC evolutionary biology 11(2011), 1 vom: 05. Juli volume:11 year:2011 number:1 day:05 month:07
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	Selective Constraint Upstream Open Reading Frame Mouse Transcript Indel Length Mouse Orthologous Gene
isfreeaccess_bool	true
container_title	BMC evolutionary biology
authorswithroles_txt_mv	Chen, Chun-Hsi @@aut@@ Liao, Ben-Yang @@aut@@ Chen, Feng-Chi @@aut@@
publishDateDaySort_date	2011-07-05T00:00:00Z
hierarchy_top_id	32664489X
id	SPR026971690
language_de	englisch
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author	Chen, Chun-Hsi
spellingShingle	Chen, Chun-Hsi misc Selective Constraint misc Upstream Open Reading Frame misc Mouse Transcript misc Indel Length misc Mouse Orthologous Gene Exploring the selective constraint on the sizes of insertions and deletions in 5' untranslated regions in mammals
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topic_title	Exploring the selective constraint on the sizes of insertions and deletions in 5' untranslated regions in mammals Selective Constraint (dpeaa)DE-He213 Upstream Open Reading Frame (dpeaa)DE-He213 Mouse Transcript (dpeaa)DE-He213 Indel Length (dpeaa)DE-He213 Mouse Orthologous Gene (dpeaa)DE-He213
topic	misc Selective Constraint misc Upstream Open Reading Frame misc Mouse Transcript misc Indel Length misc Mouse Orthologous Gene
topic_unstemmed	misc Selective Constraint misc Upstream Open Reading Frame misc Mouse Transcript misc Indel Length misc Mouse Orthologous Gene
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title	Exploring the selective constraint on the sizes of insertions and deletions in 5' untranslated regions in mammals
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title_full	Exploring the selective constraint on the sizes of insertions and deletions in 5' untranslated regions in mammals
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author_browse	Chen, Chun-Hsi Liao, Ben-Yang Chen, Feng-Chi
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author-letter	Chen, Chun-Hsi
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title_sort	exploring the selective constraint on the sizes of insertions and deletions in 5' untranslated regions in mammals
title_auth	Exploring the selective constraint on the sizes of insertions and deletions in 5' untranslated regions in mammals
abstract	Background Small insertions and deletions ("indels" with size ≦ 100 bp) whose lengths are not multiples of three (non-3n) are strongly constrained and depleted in protein-coding sequences. Such a constraint has never been reported in noncoding genomic regions. In 5'untranslated regions (5'UTRs) in mammalian genomes, upstream start codons (uAUGs) and upstream open reading frames (uORFs) can regulate protein translation. The presence of non-3n indels in uORFs can potentially disrupt the functions of these regulatory elements. We thus hypothesize that natural selection disfavors non-3n indels in 5'UTRs when these regulatory elements are present. Results We design the Indel Selection Index to measure the selective constraint on non-3n indels in 5'UTRs. The index controls for the genomic compositions of the analyzed 5'UTRs and measures the probability of non-3n indel depletion downstream of uAUGs. By comparing the experimentally supported transcripts of human-mouse orthologous genes, we demonstrate that non-3n indels downstream of two types of uAUGs (alternative translation initiation sites and the uAUGs of coding sequence-overlapping uORFs) are underrepresented. The results hold well regardless of differences in alignment tool, gene structures between human and mouse, or the criteria in selecting alternatively spliced isoforms used for the analysis. Conclusions To our knowledge, this is the first study to demonstrate selective constraints on non-3n indels in 5'UTRs. Such constraints may be associated with the regulatory functions of uAUGs/uORFs in translational regulation or the generation of protein isoforms. Our study thus brings a new perspective to the evolution of 5'UTRs in mammals. © Chen et al; licensee BioMed Central Ltd. 2011
abstractGer	Background Small insertions and deletions ("indels" with size ≦ 100 bp) whose lengths are not multiples of three (non-3n) are strongly constrained and depleted in protein-coding sequences. Such a constraint has never been reported in noncoding genomic regions. In 5'untranslated regions (5'UTRs) in mammalian genomes, upstream start codons (uAUGs) and upstream open reading frames (uORFs) can regulate protein translation. The presence of non-3n indels in uORFs can potentially disrupt the functions of these regulatory elements. We thus hypothesize that natural selection disfavors non-3n indels in 5'UTRs when these regulatory elements are present. Results We design the Indel Selection Index to measure the selective constraint on non-3n indels in 5'UTRs. The index controls for the genomic compositions of the analyzed 5'UTRs and measures the probability of non-3n indel depletion downstream of uAUGs. By comparing the experimentally supported transcripts of human-mouse orthologous genes, we demonstrate that non-3n indels downstream of two types of uAUGs (alternative translation initiation sites and the uAUGs of coding sequence-overlapping uORFs) are underrepresented. The results hold well regardless of differences in alignment tool, gene structures between human and mouse, or the criteria in selecting alternatively spliced isoforms used for the analysis. Conclusions To our knowledge, this is the first study to demonstrate selective constraints on non-3n indels in 5'UTRs. Such constraints may be associated with the regulatory functions of uAUGs/uORFs in translational regulation or the generation of protein isoforms. Our study thus brings a new perspective to the evolution of 5'UTRs in mammals. © Chen et al; licensee BioMed Central Ltd. 2011
abstract_unstemmed	Background Small insertions and deletions ("indels" with size ≦ 100 bp) whose lengths are not multiples of three (non-3n) are strongly constrained and depleted in protein-coding sequences. Such a constraint has never been reported in noncoding genomic regions. In 5'untranslated regions (5'UTRs) in mammalian genomes, upstream start codons (uAUGs) and upstream open reading frames (uORFs) can regulate protein translation. The presence of non-3n indels in uORFs can potentially disrupt the functions of these regulatory elements. We thus hypothesize that natural selection disfavors non-3n indels in 5'UTRs when these regulatory elements are present. Results We design the Indel Selection Index to measure the selective constraint on non-3n indels in 5'UTRs. The index controls for the genomic compositions of the analyzed 5'UTRs and measures the probability of non-3n indel depletion downstream of uAUGs. By comparing the experimentally supported transcripts of human-mouse orthologous genes, we demonstrate that non-3n indels downstream of two types of uAUGs (alternative translation initiation sites and the uAUGs of coding sequence-overlapping uORFs) are underrepresented. The results hold well regardless of differences in alignment tool, gene structures between human and mouse, or the criteria in selecting alternatively spliced isoforms used for the analysis. Conclusions To our knowledge, this is the first study to demonstrate selective constraints on non-3n indels in 5'UTRs. Such constraints may be associated with the regulatory functions of uAUGs/uORFs in translational regulation or the generation of protein isoforms. Our study thus brings a new perspective to the evolution of 5'UTRs in mammals. © Chen et al; licensee BioMed Central Ltd. 2011
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title_short	Exploring the selective constraint on the sizes of insertions and deletions in 5' untranslated regions in mammals
url	https://dx.doi.org/10.1186/1471-2148-11-192
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Exploring the selective constraint on the sizes of insertions and deletions in 5' untranslated regions in mammals

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