Structure/function analysis of yeast ribosomal protein L2
Ribosomal protein L2 is a core element of the large subunit that is highly conserved among all three kingdoms. L2 contacts almost every domain of the large subunit rRNA and participates in an intersubunit bridge with the small subunit rRNA. It contains a solvent-accessible globular domain that interfaces with the solvent accessible side of the large subunit that is linked through a bridge to an extension domain that approaches the peptidyltransferase center. Here, screening of randomly generated library of yeast RPL2A alleles identified three translationally defective mutants, which could be grouped into two classes. The V48D and L125Q mutants map to the globular domain. They strongly affect ribosomal A-site associated functions, peptidyltransferase activity and subunit joining. H215Y, located at the tip of the extended domain interacts with Helix 93. This mutant specifically affects peptidyl-tRNA binding and peptidyltransferase activity. Both classes affect rRNA structure far away from the protein in the A-site of the peptidyltransferase center. These findings suggest that defective interactions with Helix 55 and with the Helix 65-66 structure may indicate a certain degree of flexibility in L2 in the neck region between the two other domains, and that this might help to coordinate tRNA-ribosome interactions.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2008 |
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| Erschienen: |
2008 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:36 |
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| Enthalten in: |
Nucleic acids research - 36(2008), 6 vom: 01. Apr., Seite 1826-35 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Meskauskas, Arturas [VerfasserIn] |
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| Links: |
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| Anmerkungen: |
Date Completed 08.05.2008 Date Revised 20.10.2021 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1093/nar/gkn034 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM177510730 |
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| 100 | 1 | |a Meskauskas, Arturas |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Structure/function analysis of yeast ribosomal protein L2 |
| 264 | 1 | |c 2008 | |
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a ƒaComputermedien |b c |2 rdamedia | ||
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| 500 | |a Date Completed 08.05.2008 | ||
| 500 | |a Date Revised 20.10.2021 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a Ribosomal protein L2 is a core element of the large subunit that is highly conserved among all three kingdoms. L2 contacts almost every domain of the large subunit rRNA and participates in an intersubunit bridge with the small subunit rRNA. It contains a solvent-accessible globular domain that interfaces with the solvent accessible side of the large subunit that is linked through a bridge to an extension domain that approaches the peptidyltransferase center. Here, screening of randomly generated library of yeast RPL2A alleles identified three translationally defective mutants, which could be grouped into two classes. The V48D and L125Q mutants map to the globular domain. They strongly affect ribosomal A-site associated functions, peptidyltransferase activity and subunit joining. H215Y, located at the tip of the extended domain interacts with Helix 93. This mutant specifically affects peptidyl-tRNA binding and peptidyltransferase activity. Both classes affect rRNA structure far away from the protein in the A-site of the peptidyltransferase center. These findings suggest that defective interactions with Helix 55 and with the Helix 65-66 structure may indicate a certain degree of flexibility in L2 in the neck region between the two other domains, and that this might help to coordinate tRNA-ribosome interactions | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Research Support, N.I.H., Extramural | |
| 650 | 7 | |a RNA, Ribosomal |2 NLM | |
| 650 | 7 | |a Ribosomal Proteins |2 NLM | |
| 650 | 7 | |a Saccharomyces cerevisiae Proteins |2 NLM | |
| 650 | 7 | |a ribosomal protein L2 |2 NLM | |
| 650 | 7 | |a ribosomal protein YL6, S cerevisiae |2 NLM | |
| 650 | 7 | |a Peptidyl Transferases |2 NLM | |
| 650 | 7 | |a EC 2.3.2.12 |2 NLM | |
| 700 | 1 | |a Russ, Johnathan R |e verfasserin |4 aut | |
| 700 | 1 | |a Dinman, Jonathan D |e verfasserin |4 aut | |
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| 856 | 4 | 0 | |u http://dx.doi.org/10.1093/nar/gkn034 |3 Volltext |
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