Olke C. Uhlenbeck

Last updated
O. C. Uhlenbeck
Citizenship American
Alma mater University of Michigan
Harvard University
Known forRNA synthesis from synthetic templates, RNA-protein interactions, RNA Biochemistry
Spouse
(m. 19651976)
Scientific career
Fields Biochemistry
Biophysics
Institutions University of Illinois
University of Colorado
Northwestern University
Doctoral advisor Paul Doty

Olke C. Uhlenbeck is a Professor Emeritus of Biochemistry at the University of Colorado Boulder [1] and at Northwestern University. [2] [3]

Contents

His research group has led to many breakthroughs in RNA biochemistry, including the enzymatic synthesis of RNAs from synthetic DNA templates using T7 RNA polymerase. [4] [ better source needed ] Olke was a founding member of the RNA Society. [5] His father was theoretical physicist George Uhlenbeck.

Education

He completed his undergraduate degree at the University of Michigan at Ann Arbor in 1964, and then completed his doctorate in biophysics at Harvard University in 1969 under the supervision of Paul Doty. [6] As a graduate student in Paul Doty's lab, Uhlenbeck showed that the anticodon of tRNA was accessible to hybridization to oligonucleotides. [7] [ better source needed ]

Research

He is known for his studies of RNA biochemistry. Some[ who? ] have called him the "Father of RNA". [8]

Uhlenbeck was first published in 1968 at Harvard University for an article titled, "Some Effects on Noncomplementary Bases on the Stability of Helical Complexes of Polyribonucleotides". The study overviews the conformation of specific polyribonucleotide sequences. [9]

A visual representation of a molecule of RNA. 201904 RNA.svg
A visual representation of a molecule of RNA.

In the 1970s, he began his work on RNA. As a Miller Research Fellow in Ignacio Tinoco, Jr.'s lab he helped define an original model for RNA secondary structure prediction. [10] [ better source needed ]

In 1987, his research found that transcription occurs at variable initiation sites that can produce small nucleotide strands. These different strands contribute to the variability of RNA. Uhlenbeck and colleagues described a method to make small ribonucleotide sequences that were specific to synthetic DNA used in the study. [11]

He has also researched RNA polymerases that are involved in the creation of DNA synthesis, working on the analysis and understanding of the R17 protein coat. [12] Following that research, he along with a group of colleagues defined the accepted model of RNA secondary structure. [6]

Uhlenbeck studied how amino acids that are esterified interact with tRNA differently. [13]

Uhlenbeck Lab

Uhlenbeck runs the Uhlenbeck lab at Northwestern University after having moved it from the University of Colorado Boulder. Their current research focuses on the recognition and activity of modified tRNA. One of their major focuses is the development of an aminoacyl tRNA synthetase, which allows the researchers to conduct their experiment when there is excess enzyme in the environment. [2]

Notable contributions include:

Recognition

In 1993, Uhlenbeck was inducted into the National Academy of Sciences for his work in RNA biochemistry. [14]

John Milligan and his wife created the "Olke C. Uhlenbeck Endowed Graduate Fund" which funds the tuition of first-year graduate students pursuing their doctorate degrees at the University of Colorado, Boulder. It was named after Uhlenbeck because of the impact he made on the biochemistry department at Colorado. [6]

In 2013, Uhlenbeck was awarded the Fritz Lipmann Lectureship, which is given to someone who has made substantial and influential advancements in biochemistry. He was awarded this due to his research on RNA biochemistry. The award includes a $3,000 prize and funding to present at the Experimental Biology conference in Boston. [8]

Personal life

Uhlenbeck's father was theoretical physicist George Uhlenbeck. He was married to Karen Uhlenbeck between 1965 and 1976. [15] John F. Milligan, a colleague of Uhlenbeck's, said that he appreciated the conversations they had as he developed into a scientist. He also said that Uhlenbeck taught him how to be a leader by showing him what it meant to be engaged in research and how to be intellectually curious. This was said by Milligan after his time working in the Uhlenbeck lab at the CU Boulder. [6]

See also

Related Research Articles

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In biochemistry, a polymerase is an enzyme that synthesizes long chains of polymers or nucleic acids. DNA polymerase and RNA polymerase are used to assemble DNA and RNA molecules, respectively, by copying a DNA template strand using base-pairing interactions or RNA by half ladder replication.

<span class="mw-page-title-main">RNA polymerase</span> Enzyme that synthesizes RNA from DNA

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<span class="mw-page-title-main">DNA polymerase</span> Form of DNA replication

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<span class="mw-page-title-main">Ribozyme</span> Type of RNA molecules

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<span class="mw-page-title-main">Nucleic acid sequence</span> Succession of nucleotides in a nucleic acid

A nucleic acid sequence is a succession of bases within the nucleotides forming alleles within a DNA or RNA (GACU) molecule. This succession is denoted by a series of a set of five different letters that indicate the order of the nucleotides. By convention, sequences are usually presented from the 5' end to the 3' end. For DNA, with its double helix, there are two possible directions for the notated sequence; of these two, the sense strand is used. Because nucleic acids are normally linear (unbranched) polymers, specifying the sequence is equivalent to defining the covalent structure of the entire molecule. For this reason, the nucleic acid sequence is also termed the primary structure.

DNA primase is an enzyme involved in the replication of DNA and is a type of RNA polymerase. Primase catalyzes the synthesis of a short RNA segment called a primer complementary to a ssDNA template. After this elongation, the RNA piece is removed by a 5' to 3' exonuclease and refilled with DNA.

<span class="mw-page-title-main">DNA synthesis</span>

DNA synthesis is the natural or artificial creation of deoxyribonucleic acid (DNA) molecules. DNA is a macromolecule made up of nucleotide units, which are linked by covalent bonds and hydrogen bonds, in a repeating structure. DNA synthesis occurs when these nucleotide units are joined to form DNA; this can occur artificially or naturally. Nucleotide units are made up of a nitrogenous base, pentose sugar (deoxyribose) and phosphate group. Each unit is joined when a covalent bond forms between its phosphate group and the pentose sugar of the next nucleotide, forming a sugar-phosphate backbone. DNA is a complementary, double stranded structure as specific base pairing occurs naturally when hydrogen bonds form between the nucleotide bases.

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Xenobiology (XB) is a subfield of synthetic biology, the study of synthesizing and manipulating biological devices and systems. The name "xenobiology" derives from the Greek word xenos, which means "stranger, alien". Xenobiology is a form of biology that is not (yet) familiar to science and is not found in nature. In practice, it describes novel biological systems and biochemistries that differ from the canonical DNA–RNA-20 amino acid system. For example, instead of DNA or RNA, XB explores nucleic acid analogues, termed xeno nucleic acid (XNA) as information carriers. It also focuses on an expanded genetic code and the incorporation of non-proteinogenic amino acids, or “xeno amino acids” into proteins.

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References

  1. "Faculty". 21 August 2018.
  2. 1 2 "Northwestern University Department of Molecular Biosciences The Uhlenbeck Lab Research". groups.molbiosci.northwestern.edu. Retrieved 2020-04-18.
  3. "Olke C. Uhlenbeck". Northwestern University . Retrieved 2021-05-06.
  4. Milligan, John F.; Groebe, Duncan R.; Witherell, Gary W.; Uhlenbeck, Olke C. (1987). "Oligoribonucleotide synthesis using T7 RNA polymerase and synthetic DNA templates". Nucleic Acids Research. 15 (21): 8783–98. doi:10.1093/nar/15.21.8783. PMC   306405 . PMID   3684574.
  5. "An Imperfect Account of the Founding of the RNA Society". The RNA society.
  6. 1 2 3 4 "$1 million gift to BioFrontiers Institute to aid graduate students". CU Boulder Today. 2016-07-29. Retrieved 2020-04-18.
  7. Uhlenbeck, Olke C.; Baller, Julie; Doty, Paul (1970). "Complementary Oligonucleotide Binding to the Anticodon Loop of fMet-transfer RNA". Nature. 225 (5232): 508–10. Bibcode:1970Natur.225..508U. doi:10.1038/225508a0. PMID   5411856. S2CID   91936.
  8. 1 2 "Renowned researcher Uhlenbeck wins Lipmann lectureship for work on RNA biochemistry". www.asbmb.org. Retrieved 2020-04-18.
  9. Uhlenbeck, OLKE; Harrison, RICHARD; Doty, PAUL (1968-01-01), Pullman, BERNARD (ed.), "Some Effects on Noncomplementary Bases on the Stability of Helical Complexes of Polyribonucleotides**This work was supported by the National Science Foundation grant (GB-4563).", Molecular Associations in Biology, Academic Press, pp. 107–114, doi:10.1016/b978-0-12-395638-5.50011-2, ISBN   978-0-12-395638-5 , retrieved 2020-04-18
  10. Tinoco, Ignacio; Uhlenbeck, Olke C.; Levine, Mark D. (1971). "Estimation of Secondary Structure in Ribonucleic Acids". Nature. 230 (5293): 362–7. Bibcode:1971Natur.230..362T. doi:10.1038/230362a0. PMID   4927725. S2CID   4283534.
  11. Milligan, John F.; Groebe, Duncan R.; Witherell, Gary W.; Uhlenbeck, Olke C. (1987). "Oligoribonucleotide synthesis using T7 RNA polymerase and synthetic DNA templates". Nucleic Acids Research. 15 (21): 8783–8798. doi:10.1093/nar/15.21.8783. ISSN   0305-1048. PMC   306405 . PMID   3684574.
  12. Romaniuk, Paul J.; Lowary, Peggy; Wu, Huey Nan; Stormo, Gary; Uhlenbeck, Olke C. (1987-03-01). "RNA binding site of R17 coat protein". Biochemistry. 26 (6): 1563–1568. doi:10.1021/bi00380a011. ISSN   0006-2960. PMID   3297131.
  13. Uhlenbeck, Olke C; Schrader, Jared M (October 2018). "Evolutionary tuning impacts the design of bacterial tRNAs for the incorporation of unnatural amino acids by ribosomes". Current Opinion in Chemical Biology. 46: 138–145. doi: 10.1016/j.cbpa.2018.07.016 . ISSN   1367-5931. PMC   6601615 . PMID   30059836.
  14. "Olke Uhlenbeck". www.nasonline.org. Retrieved 2020-04-18.
  15. Allyn Jackson (2018). "Interview with Karen Uhlenbeck". Celebratio Mathematica .