Susan Baserga | |
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 Baserga receiving the 2016 American Society for Biochemistry and Molecular Biology William C. Rose Award | |
| Alma mater | Yale College Yale School of Medicine Yale University |
| Scientific career | |
| Institutions | Yale School of Medicine |
Susan J. Baserga is an American physician who is the William H. Fleming Professor of Molecular Biophysics and Biochemistry at Yale University. Her research considers the molecular basis of ribosomes, and the mechanistic basis of inherited human disease.
Baserga's father, Renato Baserga, was a pathologist and cancer researcher. [1] In 1977, Baserga became inspired by pre-RNA splicing. As an MD–PhD candidate, Baserga studied nonsense-mediated decay mammalian cells. She moved to Joan A. Steitz's laboratory at Yale University, where she started working on ribosome biogenesis.[ citation needed ]
Baserga started her academic career at Yale in 1993. She was promoted to professor in 2007.[ citation needed ] Her research sought to identify how ribosome production is regulated in mammalian cells. She uses Xenopus tropicalis as a model system for ribosomopathies, and is interested in Fanconi anemia repair factors. [1]
In 2020, Baserga was named the William H. Fleming Professor of Molecular Biophysics and Biochemistry. [2] She is the Chair of the American Society for Biochemistry and Molecular Biology Women in Biochemistry and Molecular Biology Committee. [3] In 2023, she joned the National Academies of Sciences, Engineering, and Medicine Committee on RNA modifications, "Towards Sequencing and Mapping of RNA Modifications". [4]
Ribosomes are macromolecular machines, found within all cells, that perform biological protein synthesis. Ribosomes link amino acids together in the order specified by the codons of messenger RNA molecules to form polypeptide chains. Ribosomes consist of two major components: the small and large ribosomal subunits. Each subunit consists of one or more ribosomal RNA molecules and many ribosomal proteins. The ribosomes and associated molecules are also known as the translational apparatus.
The Shine–Dalgarno (SD) sequence is a ribosomal binding site in bacterial and archaeal messenger RNA, generally located around 8 bases upstream of the start codon AUG. The RNA sequence helps recruit the ribosome to the messenger RNA (mRNA) to initiate protein synthesis by aligning the ribosome with the start codon. Once recruited, tRNA may add amino acids in sequence as dictated by the codons, moving downstream from the translational start site.
Ribosomal ribonucleic acid (rRNA) is a type of non-coding RNA which is the primary component of ribosomes, essential to all cells. rRNA is a ribozyme which carries out protein synthesis in ribosomes. Ribosomal RNA is transcribed from ribosomal DNA (rDNA) and then bound to ribosomal proteins to form small and large ribosome subunits. rRNA is the physical and mechanical factor of the ribosome that forces transfer RNA (tRNA) and messenger RNA (mRNA) to process and translate the latter into proteins. Ribosomal RNA is the predominant form of RNA found in most cells; it makes up about 80% of cellular RNA despite never being translated into proteins itself. Ribosomes are composed of approximately 60% rRNA and 40% ribosomal proteins, though this ratio differs between prokaryotes and eukaryotes.
Ribosome biogenesis is the process of making ribosomes. In prokaryotes, this process takes place in the cytoplasm with the transcription of many ribosome gene operons. In eukaryotes, it takes place both in the cytoplasm and in the nucleolus. It involves the coordinated function of over 200 proteins in the synthesis and processing of the three prokaryotic or four eukaryotic rRNAs, as well as assembly of those rRNAs with the ribosomal proteins. Most of the ribosomal proteins fall into various energy-consuming enzyme families including ATP-dependent RNA helicases, AAA-ATPases, GTPases, and kinases. About 60% of a cell's energy is spent on ribosome production and maintenance.
Joan Elaine Argetsinger Steitz is Sterling Professor of Molecular Biophysics and Biochemistry at Yale University and Investigator at the Howard Hughes Medical Institute. She is known for her discoveries involving RNA, including ground-breaking insights into how ribosomes interact with messenger RNA by complementary base pairing and that introns are spliced by small nuclear ribonucleic proteins (snRNPs), which occur in eukaryotes. In September 2018, Steitz won the Lasker-Koshland Award for Special Achievement in Medical Science. The Lasker award is often referred to as the 'American Nobel' because 87 of the former recipients have gone on to win Nobel prizes.
The 5S ribosomal RNA is an approximately 120 nucleotide-long ribosomal RNA molecule with a mass of 40 kDa. It is a structural and functional component of the large subunit of the ribosome in all domains of life, with the exception of mitochondrial ribosomes of fungi and animals. The designation 5S refers to the molecule's sedimentation coefficient in an ultracentrifuge, which is measured in Svedberg units (S).
In molecular biology, Small nucleolar RNA R66 is a non-coding RNA (ncRNA) molecule which functions in the modification of other small nuclear RNAs (snRNAs). This type of modifying RNA is usually located in the nucleolus of the eukaryotic cell which is a major site of snRNA biogenesis. It is known as a small nucleolar RNA (snoRNA) and also often referred to as a guide RNA.
In molecular biology, Small nucleolar RNA TBR7 is a non-coding RNA (ncRNA) molecule identified in Trypanosoma brucei which functions in the modification of other small nuclear RNAs (snRNAs). This type of modifying RNA is usually located in the nucleolus of the eukaryotic cell which is a major site of snRNA biogenesis. It is known as a small nucleolar RNA (snoRNA) and also often referred to as a guide RNA.
Erb1 also known as the eukaryotic ribosome biogenesis protein 1 is a yeast protein required for maturation of the 25S and 5.8S ribosomal RNAs. It is a component of 66S pre-ribosomal particles and is homologous to the human protein BOP1.
18S ribosomal RNA is a part of the ribosomal RNA in eukaryotes. It is a component of the Eukaryotic small ribosomal subunit (40S) and the cytosolic homologue of both the 12S rRNA in mitochondria and the 16S rRNA in plastids and prokaryotes. Similar to the prokaryotic 16S rRNA, the genes of the 18S ribosomal RNA haven been widely used for phylogenetic studies and biodiversity screening of eukaryotes.
Ribosomes are a large and complex molecular machine that catalyzes the synthesis of proteins, referred to as translation. The ribosome selects aminoacylated transfer RNAs (tRNAs) based on the sequence of a protein-encoding messenger RNA (mRNA) and covalently links the amino acids into a polypeptide chain. Ribosomes from all organisms share a highly conserved catalytic center. However, the ribosomes of eukaryotes are much larger than prokaryotic ribosomes and subject to more complex regulation and biogenesis pathways. Eukaryotic ribosomes are also known as 80S ribosomes, referring to their sedimentation coefficients in Svedberg units, because they sediment faster than the prokaryotic (70S) ribosomes. Eukaryotic ribosomes have two unequal subunits, designated small subunit (40S) and large subunit (60S) according to their sedimentation coefficients. Both subunits contain dozens of ribosomal proteins arranged on a scaffold composed of ribosomal RNA (rRNA). The small subunit monitors the complementarity between tRNA anticodon and mRNA, while the large subunit catalyzes peptide bond formation.
Thomas Arthur Steitz was an American biochemist, a Sterling Professor of Molecular Biophysics and Biochemistry at Yale University, and investigator at the Howard Hughes Medical Institute, best known for his pioneering work on the ribosome.
The NAS Award in Molecular Biology is awarded by the U.S. National Academy of Sciences "for recent notable discovery in molecular biology by a young scientist who is a citizen of the United States." It has been awarded annually since its inception in 1962.
Lynne Elizabeth Maquat is an American biochemist and molecular biologist whose research focuses on the cellular mechanisms of human disease. She is an elected member of the American Academy of Arts and Sciences, the National Academy of Sciences and the National Academy of Medicine. She currently holds the J. Lowell Orbison Endowed Chair and is a professor of biochemistry and biophysics, pediatrics and of oncology at the University of Rochester Medical Center. Professor Maquat is also Founding Director of the Center for RNA Biology and Founding Chair of Graduate Women in Science at the University of Rochester.
Mark Andrew Lemmon an English-born biochemist, is the Alfred Gilman Professor and Department Chair of Pharmacology at Yale University where he also directs the Cancer Biology Institute.
Sandra Lynn Wolin is an American microbiologist and physician-scientist specialized in biogenesis, function, and turnover of non-coding RNA. She is chief of the RNA Biology Laboratory at the National Cancer Institute.
Christine Guthrie (1945-2022) was an American yeast geneticist and American Cancer Society Research Professor of Genetics at University of California San Francisco. She showed that yeast have small nuclear RNAs (snRNAs) involved in splicing pre-messenger RNA into messenger RNA in eukaryotic cells. Guthrie cloned and sequenced the genes for yeast snRNA and established the role of base pairing between the snRNAs and their target sequences at each step in the removal of an intron. She also identified proteins that formed part of the spliceosome complex with the snRNAs. Elected to the National Academy of Sciences in 1993, Guthrie edited Guide to Yeast Genetics and Molecular Biology, an influential methods series for many years.
Anna Marie Pyle is an American academic who is a Sterling Professor of Molecular, Cellular & Developmental Biology and a Professor of Chemistry at Yale University. and an Investigator for Howard Hughes Medical Institute. Pyle is the president of the RNA Society, the vice-chair of the Science and Technology Steering Committee at Brookhaven National Laboratory, and previously she served as chair of the Macromolecular Structure and Function A Study Section at the National Institutes of Health.
Rachel Green is a Bloomberg Distinguished Professor of molecular biology and genetics at the Johns Hopkins University School of Medicine. Her research focuses on ribosomes and their function in translation. Green has also been a Howard Hughes Medical Institute investigator since 2000.
Shu-ou Shan is a Chinese American biologist who is a professor at the California Institute of Technology. Her research combines mechanistic enzymology with biophysical characterization techniques to understand biogenesis pathways. She was awarded the 2024 National Academy of Sciences Award in Molecular Biology.
| Authority control databases: Academics |
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