The DOI matches its Crossref record; 16 of the 16 references it cites were found in a registry or an index.
Architecture of ribosomal RNA: constraints on the sequence of "tetra-loops".
Open accessAbstract
The four-base loops that cap many double-helical structures in rRNA (the so-called "tetra-loops") exhibit highly invariant to highly variable sequences depending upon their location in the molecule. However, in the vast majority of these cases the sequence of a tetra-loop is independent of its location and conforms to one of three general motifs, GNRA, UNCG, and (more rarely) CUUG. For the most frequently varying of the 16S rRNA tetra-loops, that at position 83 (Escherichia coli numbering), the three sequences CUUG, UUCG, and GCAA account for almost all examples encountered, and each of them has independently arisen at least a dozen times. The closing base pair of tetra-loop hairpins reflects the loop sequence, tending to be C.G for UUCG loops and G.C for CUUG loops.
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Cites
Towards a natural system of organisms: proposal for the domains Archaea, Bacteria, and Eucarya.
Woese, C. R., Kandler, O., & Wheelis, M. L. (1990) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.87.12.4576 · Cited by 6,128
Self-citationWoese, C. R. (1987) · Microbiological Reviews · doi:10.1128/mr.51.2.221-271.1987 · Cited by 5,042
Self-citationImproved predictions of secondary structures for RNA.
Jaeger, J. A., Turner, D. H., & Zuker, M. (1989) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.86.20.7706 · Cited by 817
Detailed analysis of the higher-order structure of 16S-like ribosomal ribonucleic acids
Woese, C. R., Gutell, R. R., Gupta, R., & Noller, H. F. (1983) · Microbiological Reviews · doi:10.1128/mmbr.47.4.621-669.1983 · Cited by 758
Self-citationA phylogenetic analysis of the mycoplasmas: basis for their classification
Weisburg, W. G., Tully, J. G., Rose, D. L., Petzel, J. P., Oyaizu, H., Yang, D., Mandelco, L., Sechrest, J., Lawrence, T. G., & Van Etten, J. (1989) · Journal of Bacteriology · doi:10.1128/jb.171.12.6455-6467.1989 · Cited by 747
Comparative Anatomy of 16-S-like Ribosomal RNA
Gutell, R. R., Weiser, B., Woese, C. R., & Noller, H. F. (1985) · Progress in Nucleic Acid Research and Molecular Biology · doi:10.1016/s0079-6603(08)60348-7 · Cited by 668
Self-citationTurner, D. H., Sugimoto, N., & Freier, S. M. (1988) · Annual Review of Biophysics and Biophysical Chemistry · doi:10.1146/annurev.bb.17.060188.001123 · Cited by 642
A Compilation of large subunit RNA sequences presented in a structural format
Gutell, R. R., & Fox, G. E. (1988) · Nucleic Acids Research · doi:10.1093/nar/16.suppl.r175 · Cited by 371
Self-citationSecondary structure model for 23S ribosomal RNA
Noller, H. F., Kop, J., Wheaton, V., Brosius, J., Gutell, R. R., Kopylov, A. M., Dohme, F., Herr, W., Stahl, D. A., Gupta, R., et al. (1981) · Nucleic Acids Research · doi:10.1093/nar/9.22.6167 · Cited by 371
Self-citationTuerk, C., Gauss, P., Thermes, C., Groebe, D. R., Gayle, M., Guild, N., Stormo, G., d'Aubenton-Carafa, Y., Uhlenbeck, O. C., & Tinoco, I. (1988) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.85.5.1364 · Cited by 354
Cited by
Mathews, D. H., Sabina, J., Zuker, M., & Turner, D. H. (1999) · Journal of Molecular Biology · doi:10.1006/jmbi.1999.2700 · Cited by 3,795
Adaptive Recognition by Nucleic Acid Aptamers
Hermann, T., & Patel, D. J. (2000) · Science · doi:10.1126/science.287.5454.820 · Cited by 1,650
Isolation of New Ribozymes from a Large Pool of Random Sequences
Bartel, D. P., & Szostak, J. W. (1993) · Science · doi:10.1126/science.7690155 · Cited by 900
The non-Watson-Crick base pairs and their associated isostericity matrices
Leontis, N. B. (2002) · Nucleic Acids Research · doi:10.1093/nar/gkf481 · Cited by 796
The accuracy of ribosomal RNA comparative structure models
Gutell, R. R., Lee, J. C., & Cannone, J. J. (2002) · Current Opinion in Structural Biology · doi:10.1016/s0959-440x(02)00339-1 · Cited by 364
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Metadata
- Authors
- Woese, C. R., Winker, S., & Gutell, R. R.
- Venue
- Proceedings of the National Academy of Sciences
- Published
- 1990-11
- Volume
- 87
- Issue
- 21
- Pages
- 8467-8471
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- OpenAlex
- W1985124981
- Cited by
- 522
- References
- 16
- FWCI
- 6.48
- Type
- journal article
- Language
- en
- Open access
- green
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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