Yi Tang (biochemist)

Last updated

Yi Tang is a biochemist and professor in the Department of Chemistry and Biochemistry and the Department of Chemical and Biomolecular Engineering at the University of California, Los Angeles. [1] [2] His research interests include the discovery, functional characterization, and engineering of natural product biosynthetic enzymes. [3] He was awarded the 2014 Eli Lilly Award in Biological Chemistry. [4]

Contents

Education

Tang attended college at Pennsylvania State University and earned his PhD in Chemistry in 2002 from the California Institute of Technology, where he worked in the lab of Professor David Tirrell. [5]

Career and research

From 2002 to 2004, Tang pursued postdoctoral studies at the Stanford University in the lab of Professor Chaitan Khosla. In 2004, Tang joined the faculty of the Department of Chemical and Biomolecular Engineering the University of California, Los Angeles. His group's research has focused on studying the biosynthesis of natural products from Streptomyces and filamentous fungi as well as engineering enzymes that can be used for the production of pharmaceutical compounds. One demonstration of the latter approach has been his group's development of a biocatalytic approach for making the commonly prescribed lipid-lowering medication simvastatin. [6] [7]

Web of Science lists 254 publications authored by Tang in peer-reviewed scientific journals that have been cited over 10,000 times, leading to an h-index of 58. [8] His lab's three most cited papers have been cited >180 times each. [9] [10] [11]

Awards and honors

[1] [2]

Related Research Articles

<span class="mw-page-title-main">Oxytetracycline</span> Antibiotic

Oxytetracycline is a broad-spectrum tetracycline antibiotic, the second of the group to be discovered.

Polyketides are a class of natural products derived from a precursor molecule consisting of a chain of alternating ketone (or reduced forms of a ketone) and methylene groups: (-CO-CH2-). First studied in the early 20th century, discovery, biosynthesis, and application of polyketides has evolved. It is a large and diverse group of secondary metabolites caused by its complex biosynthesis which resembles that of fatty acid synthesis. Because of this diversity, polyketides can have various medicinal, agricultural, and industrial applications. Many polyketides are medicinal or exhibit acute toxicity. Biotechnology has enabled discovery of more naturally-occurring polyketides and evolution of new polyketides with novel or improved bioactivity.

<span class="mw-page-title-main">Chalcone</span> Chemical compound

Chalcone is the organic compound C6H5C(O)CH=CHC6H5. It is an α,β-unsaturated ketone. A variety of important biological compounds are known collectively as chalcones or chalconoids. As bioactive substances, fluorescent materials, and chemical intermediates, they are widely known. Chalcones have been used in medicinal chemistry as antioxidants, anticancer agents, diabetes medications, antiviral agents, antimalarial agents, and more. Aside from being utilized as medicines, they may also be employed as liquid crystals, fluorescent scaffolds, metal sensors, corrosion inhibitors, and plant growth promoters.

<span class="mw-page-title-main">Cyclopiazonic acid</span> Chemical compound

Cyclopiazonic acid (α-CPA), a mycotoxin and a fungal neurotoxin, is made by the molds Aspergillus and Penicillium. It is an indole-tetramic acid that serves as a toxin due to its ability to inhibit calcium-dependent ATPases found in the endoplasmic and sarcoplasmic reticulum. This inhibition disrupts the muscle contraction-relaxation cycle and the calcium gradient that is maintained for proper cellular activity in cells.

<span class="mw-page-title-main">Calicheamicin</span> Chemical compound

The calicheamicins are a class of enediyne antitumor antibiotics derived from the bacterium Micromonospora echinospora, with calicheamicin γ1 being the most notable. It was isolated originally in the mid-1980s from the chalky soil, or "caliche pits", located in Kerrville, Texas. The sample was collected by a scientist working for Lederle Labs. It is extremely toxic to all cells and, in 2000, a CD33 antigen-targeted immunoconjugate N-acetyl dimethyl hydrazide calicheamicin was developed and marketed as targeted therapy against the non-solid tumor cancer acute myeloid leukemia (AML). A second calicheamicin-linked monoclonal antibody, inotuzumab ozogamicin an anti-CD22-directed antibody-drug conjugate, was approved by the U.S. Food and Drug Administration on August 17, 2017, for use in the treatment of adults with relapsed or refractory B-cell precursor acute lymphoblastic leukemia. Calicheamicin γ1 and the related enediyne esperamicin are the two of the most potent antitumor agents known.

Polyketide synthases (PKSs) are a family of multi-domain enzymes or enzyme complexes that produce polyketides, a large class of secondary metabolites, in bacteria, fungi, plants, and a few animal lineages. The biosyntheses of polyketides share striking similarities with fatty acid biosynthesis.

The aminocyclitols are compounds related to cyclitols. They possess features of relative and absolute configuration that are characteristic of their class and have been extensively studied; but these features are not clearly displayed by general methods of stereochemical nomenclature, so that special methods of specifying their configuration are justified and have long been used. In other than stereochemical respects, their nomenclature should follow the general rules of organic chemistry.

<span class="mw-page-title-main">Nogalamycin</span> Chemical compound

Nogalamycin is an anthracycline antibiotic produced by the soil bacteria Streptomyces nogalater. It has antitumor properties but it is also highly cardiotoxic. The less cardiotoxic semisynthetic analog menogaril was developed in the 1970s. Currently nogalamycin and menogaril are not used clinically.

<span class="mw-page-title-main">Pikromycin</span> Chemical compound

Pikromycin was studied by Brokmann and Hekel in 1951 and was the first antibiotic macrolide to be isolated. Pikromycin is synthesized through a type I polyketide synthase system in Streptomyces venezuelae, a species of Gram-positive bacterium in the genus Streptomyces. Pikromycin is derived from narbonolide, a 14-membered ring macrolide. Along with the narbonolide backbone, pikromycin includes a desosamine sugar and a hydroxyl group. Although Pikromycin is not a clinically useful antibiotic, it can be used as a raw material to synthesize antibiotic ketolide compounds such as ertythromycins and new epothilones.

<span class="mw-page-title-main">Monocerin</span> Chemical compound

Monocerin is a dihydroisocoumarin and a polyketide metabolite that originates from various fungal species. It has been shown to display antifungal, plant pathogenic, and insecticidal characteristics. Monocerin has been isolated from Dreschlera monoceras, D. ravenelii, Exserohilum turcicum, and Fusarium larvarum.

Chaitan Khosla Ph.D is the Wells H. Rauser and Harold M. Petiprin Professor of Chemical Engineering and Chemistry at Stanford University. He earned his B.Tech in Chemical Engineering from Indian Institute of Technology Bombay in 1985 and his Ph.D. from the California Institute of Technology in 1990 with Jay Bailey working on the expression of the Vitreoscilla Hemoglobin gene. He did his postdoctoral work at the John Innes Centre with David Hopwood. He has been a professor at Stanford since 1992 and was the chair of the program. His research is focused on two realms, the first are to build a molecular understanding of polyketide synthases and the second is focused on the biochemistry of celiac disease particularly involving tissue transglutaminase. His group play a large role in identifying the role of the α2-gliadin fragment in immune responses.

Pyridoxal 5′-phosphate synthase (glutamine hydrolysing) (EC 4.3.3.6, PdxST) is an enzyme with systematic name D-ribose 5-phosphate,D-glyceraldehyde 3-phosphate pyridoxal 5′-phosphate-lyase. This enzyme catalyses the following chemical reaction

<span class="mw-page-title-main">Pseurotin A</span> Chemical compound

Pseurotin A is a secondary metabolite of Aspergillus.

<span class="mw-page-title-main">Azinomycin B</span> Chemical compound


Azinomycin B is a natural product that contains densely assembled functionalities with potent antitumor activity. It is isolated from Streptomyces sahachiroi which is reisolated from S. griseofuscus along with its analog azinomycin A. Azinomycin B can bind within the major groove of DNA and forms covalent interstrand crosslinks (ISCs) with the purine bases. The DNA alkylation and crosslinking by azinomycin B suggests its potent antitumor activity.

Streptomyces pulveraceus is a bacterium species from the genus of Streptomyces which has been isolated from soil in Fukuchiyama in Japan. Streptomyces pulveraceus produces zygomycine and fostriecin.

Fostriecin is a type I polyketide synthase (PKS) derived natural product, originally isolated from the soil bacterium Streptomyces pulveraceus. It belongs to a class of natural products which characteristically contain a phosphate ester, an α,β-unsaturated lactam and a conjugated linear diene or triene chain produced by Streptomyces. This class includes structurally related compounds cytostatin and phoslactomycin. Fostriecin is a known potent and selective inhibitor of protein serine/threonine phosphatases, as well as DNA topoisomerase II. Due to its activity against protein phosphatases PP2A and PP4 which play a vital role in cell growth, cell division, and signal transduction, fostriecin was looked into for its antitumor activity in vivo and showed in vitro activity against leukemia, lung cancer, breast cancer, and ovarian cancer. This activity is thought to be due to PP2A's assumed role in regulating apoptosis of cells by activating cytotoxic T-lymphocytes and natural killer cells involved in tumor surveillance, along with human immunodeficiency virus-1 (HIV-1) transcription and replication.

Butyrolactol A is an organic chemical compound of interest for its potential use as an antifungal antibiotic.

<span class="mw-page-title-main">Aureothin</span> Chemical compound

Aureothin is a natural product of a cytotoxic shikimate-polyketide antibiotic with the molecular formula C22H23NO6. Aureothin is produced by the bacterium Streptomyces thioluteus that illustrates antitumor, antifungal, and insecticidal activities and the new aureothin derivatives can be antifungal and antiproliferative. In addition, aureothin, a nitro compound from Streptomyces thioluteus, was indicated to have pesticidal activity against the bean weevil by interfering with mitochondrial respiratory complex II.

Minkui Luo is a biochemist and professor of biochemistry at Memorial Sloan Kettering Cancer Center. His research interests include chemical biology and the study of posttranslational modifications in epigenetic signaling, with an emphasis on protein methyltransferases.

Paul J. Hergenrother is an American chemist and the Kenneth L. Rinehart Jr. Endowed Chair in Natural Products chemistry at the University of Illinois Urbana-Champaign. His research focuses on the development of organic small molecules with novel biological properties such as enzyme inhibitors and activators, chemotherapeutics, and antibacterial agents. In 2008 Hergenrother was awarded the Eli Lilly Award in Biological Chemistry.

References

  1. 1 2 "Yi Tang Lab@UCLA - Members". sites.google.com. Retrieved 2023-01-07.
  2. 1 2 "Tang, Yi". The David and Lucile Packard Foundation. Retrieved 2023-01-07.
  3. "Yi Tang". scholar.google.com. Retrieved 2023-01-07.
  4. ACS Division of Biological Chemistry (7 January 2023). "Previous Eli Lilly Award in Biological Chemistry Recipients" (PDF).
  5. Tang Y, Ghirlanda G, Petka WA, Nakajima T, DeGrado WF, Tirrell DA (April 2001). "Fluorinated Coiled-Coil Proteins Prepared In Vivo Display Enhanced Thermal and Chemical Stability". Angewandte Chemie. 40 (8): 1494–1496. doi:10.1002/1521-3773(20010417)40:8<1494::AID-ANIE1494>3.0.CO;2-X. PMID   29712367.
  6. "Structural secrets of enzyme used to make popular anti-cholesterol drug revealed". ScienceDaily. Retrieved 2023-01-07.
  7. US EPA, OCSPP (2013-02-26). "Presidential Green Chemistry Challenge: 2012 Greener Synthetic Pathways Award". www.epa.gov. Retrieved 2023-01-07.
  8. "Web of Science". www.webofscience.com. Retrieved 2023-01-07.
  9. Medema MH, Kottmann R, Yilmaz P, Cummings M, Biggins JB, Blin K, et al. (September 2015). "Minimum Information about a Biosynthetic Gene cluster". Nature Chemical Biology. 11 (9): 625–631. doi:10.1038/nchembio.1890. PMC   5714517 . PMID   26284661.
  10. Zhou H, Qiao K, Gao Z, Meehan MJ, Li JW, Zhao X, et al. (April 2010). "Enzymatic synthesis of resorcylic acid lactones by cooperation of fungal iterative polyketide synthases involved in hypothemycin biosynthesis". Journal of the American Chemical Society. 132 (13): 4530–4531. doi:10.1021/ja100060k. PMC   2861853 . PMID   20222707.
  11. Ma SM, Li JW, Choi JW, Zhou H, Lee KK, Moorthie VA, et al. (October 2009). "Complete reconstitution of a highly reducing iterative polyketide synthase". Science. 326 (5952): 589–592. doi:10.1126/science.1175602. PMC   2875069 . PMID   19900898.