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Petrova VV, Solovev YV, Porozov YB, Polynski MV. Will We Witness Enzymatic or Pd-(Oligo)Peptide Catalysis in Suzuki Cross-Coupling Reactions? J Org Chem 2024; 89:8478-8485. [PMID: 38861408 DOI: 10.1021/acs.joc.4c00409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2024]
Abstract
Despite the development of numerous advanced ligands for Pd-catalyzed Suzuki cross-coupling reaction, the potential of (oligo)peptides serving as ligands remains unexplored. This study demonstrates via density functional theory (DFT) modeling that (oligo)peptide ligands can drive superior activity compared to classic phosphines in these reactions. The utilization of natural amino acids such as Met, SeMet, and His leads to strong binding of the Pd center, thereby ensuring substantial stability of the system. The increasing sustainability and economic viability of (oligo)peptide synthesis open new prospects for applying Pd-(oligo)peptide systems as greener catalysts. The feasibility of de novo engineering an artificial Pd-based enzyme for Suzuki cross-coupling is discussed, laying the groundwork for future innovations in catalytic systems.
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Affiliation(s)
- Vlada V Petrova
- M.M. Shemyakin and Yu.A. Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, Miklukho-Maklaya 16/10, Moscow 117997, Russia
- Quantum Chemistry Department, Institute of Chemistry, St. Petersburg State University, Universitetsky Prospect 26, Saint Petersburg 198504, Russia
| | - Yaroslav V Solovev
- M.M. Shemyakin and Yu.A. Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, Miklukho-Maklaya 16/10, Moscow 117997, Russia
| | - Yuri B Porozov
- St. Petersburg School of Physics, Mathematics, and Computer Science, HSE University, Kantemirovskaya Street 3-1A, Saint Petersburg 194100, Russia
- Advitam Laboratory, Vodovodska 158, Belgrade 11147, Serbia
| | - Mikhail V Polynski
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117585, Singapore
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2
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Lian ZJ, Lin TY, Yao CX, Su YL, Liao SH, Wu SM. Staphylococcus aureus strains exposed to copper indium sulfide quantum dots exhibit increased tolerance to penicillin G, tetracycline and ciprofloxacin. NEW J CHEM 2020. [DOI: 10.1039/c9nj05748j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Copper indium sulfide, CuInS2 (CIS), semiconductor nanocrystals have the qualities of low toxicity, high absorption coefficient and near-infrared luminescence, and thus have attracted increasing attention due to their wide prospective applications in various fields.
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Affiliation(s)
- Zong-Juan Lian
- Department of Analytical Chemistry
- China Pharmaceutical University
- Nanjing 210009
- China
- Key Laboratory of Drug Quality Control and Pharmacovigilance
| | - Tian-Yang Lin
- Department of Analytical Chemistry
- China Pharmaceutical University
- Nanjing 210009
- China
- Key Laboratory of Drug Quality Control and Pharmacovigilance
| | - Cai-Xia Yao
- Department of Analytical Chemistry
- China Pharmaceutical University
- Nanjing 210009
- China
- Key Laboratory of Drug Quality Control and Pharmacovigilance
| | - Yi-Long Su
- Department of Analytical Chemistry
- China Pharmaceutical University
- Nanjing 210009
- China
- Key Laboratory of Drug Quality Control and Pharmacovigilance
| | - Sheng-Hua Liao
- Department of Analytical Chemistry
- China Pharmaceutical University
- Nanjing 210009
- China
- Key Laboratory of Drug Quality Control and Pharmacovigilance
| | - Sheng-Mei Wu
- Department of Analytical Chemistry
- China Pharmaceutical University
- Nanjing 210009
- China
- Key Laboratory of Drug Quality Control and Pharmacovigilance
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3
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Kobayashi Y, Murata K, Harada A, Yamaguchi H. A palladium-catalyst stabilized in the chiral environment of a monoclonal antibody in water. Chem Commun (Camb) 2020; 56:1605-1607. [DOI: 10.1039/c9cc08756g] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the first preparation of a monoclonal antibody (mAb) that can immobilize a palladium (Pd)-complex. The allylic amination reaction using a supramolecular catalyst of the Pd-complex with mAb selectively gives the (R)-enantiomer product.
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Affiliation(s)
- Yuichiro Kobayashi
- Department of Macromolecular Science
- Graduate School of Science
- Osaka University
- Toyonaka
- Japan
| | - Keisuke Murata
- Department of Macromolecular Science
- Graduate School of Science
- Osaka University
- Toyonaka
- Japan
| | - Akira Harada
- The Institute of Scientific and Industrial Research
- Osaka University
- Ibaraki 567-0047
- Japan
| | - Hiroyasu Yamaguchi
- Department of Macromolecular Science
- Graduate School of Science
- Osaka University
- Toyonaka
- Japan
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4
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Schwizer F, Okamoto Y, Heinisch T, Gu Y, Pellizzoni MM, Lebrun V, Reuter R, Köhler V, Lewis JC, Ward TR. Artificial Metalloenzymes: Reaction Scope and Optimization Strategies. Chem Rev 2017; 118:142-231. [PMID: 28714313 DOI: 10.1021/acs.chemrev.7b00014] [Citation(s) in RCA: 490] [Impact Index Per Article: 70.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The incorporation of a synthetic, catalytically competent metallocofactor into a protein scaffold to generate an artificial metalloenzyme (ArM) has been explored since the late 1970's. Progress in the ensuing years was limited by the tools available for both organometallic synthesis and protein engineering. Advances in both of these areas, combined with increased appreciation of the potential benefits of combining attractive features of both homogeneous catalysis and enzymatic catalysis, led to a resurgence of interest in ArMs starting in the early 2000's. Perhaps the most intriguing of potential ArM properties is their ability to endow homogeneous catalysts with a genetic memory. Indeed, incorporating a homogeneous catalyst into a genetically encoded scaffold offers the opportunity to improve ArM performance by directed evolution. This capability could, in turn, lead to improvements in ArM efficiency similar to those obtained for natural enzymes, providing systems suitable for practical applications and greater insight into the role of second coordination sphere interactions in organometallic catalysis. Since its renaissance in the early 2000's, different aspects of artificial metalloenzymes have been extensively reviewed and highlighted. Our intent is to provide a comprehensive overview of all work in the field up to December 2016, organized according to reaction class. Because of the wide range of non-natural reactions catalyzed by ArMs, this was done using a functional-group transformation classification. The review begins with a summary of the proteins and the anchoring strategies used to date for the creation of ArMs, followed by a historical perspective. Then follows a summary of the reactions catalyzed by ArMs and a concluding critical outlook. This analysis allows for comparison of similar reactions catalyzed by ArMs constructed using different metallocofactor anchoring strategies, cofactors, protein scaffolds, and mutagenesis strategies. These data will be used to construct a searchable Web site on ArMs that will be updated regularly by the authors.
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Affiliation(s)
- Fabian Schwizer
- Department of Chemistry, Spitalstrasse 51, University of Basel , CH-4056 Basel, Switzerland
| | - Yasunori Okamoto
- Department of Chemistry, Spitalstrasse 51, University of Basel , CH-4056 Basel, Switzerland
| | - Tillmann Heinisch
- Department of Chemistry, Spitalstrasse 51, University of Basel , CH-4056 Basel, Switzerland
| | - Yifan Gu
- Searle Chemistry Laboratory, University of Chicago , 5735 S. Ellis Ave., Chicago, Illinois 60637, United States
| | - Michela M Pellizzoni
- Department of Chemistry, Spitalstrasse 51, University of Basel , CH-4056 Basel, Switzerland
| | - Vincent Lebrun
- Department of Chemistry, Spitalstrasse 51, University of Basel , CH-4056 Basel, Switzerland
| | - Raphael Reuter
- Department of Chemistry, Spitalstrasse 51, University of Basel , CH-4056 Basel, Switzerland
| | - Valentin Köhler
- Department of Chemistry, Spitalstrasse 51, University of Basel , CH-4056 Basel, Switzerland
| | - Jared C Lewis
- Searle Chemistry Laboratory, University of Chicago , 5735 S. Ellis Ave., Chicago, Illinois 60637, United States
| | - Thomas R Ward
- Department of Chemistry, Spitalstrasse 51, University of Basel , CH-4056 Basel, Switzerland
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5
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Affiliation(s)
- Kenneth M. Nicholas
- Department of Chemistry and
Biochemistry Stephenson Life Sciences Center, University of Oklahoma, 101 Stephenson Parkway, Norman, Oklahoma 73019, United States
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6
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Pàmies O, Diéguez M, Bäckvall JE. Artificial Metalloenzymes in Asymmetric Catalysis: Key Developments and Future Directions. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500290] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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8
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Garner DK, Liang L, Barrios DA, Zhang JL, Lu Y. Covalent Anchor Positions Play an Important Role in Tuning Catalytic Properties of a Rationally Designed MnSalen-containing Metalloenzyme. ACS Catal 2011; 1:1083-1089. [PMID: 22013554 PMCID: PMC3194002 DOI: 10.1021/cs200258e] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Two questions important to the success in metalloenzyme design are how to attach or anchor metal cofactors inside protein scaffolds, and in what way such positioning affects enzymatic properties. We have previously reported a dual anchoring method to position a nonnative cofactor, MnSalen (1), inside the heme cavity of apo sperm whale myoglobin (Mb) and showed that the dual anchoring can increase both the activity and enantioselectivity over the single anchoring methods, making this artificial enzyme an ideal system to address the above questions. Here we report systematic investigations of the effect of different covalent attachment or anchoring positions on reactivity and selectivity of sulfoxidation by the MnSalen-containing Mb enzymes. We have found that changing the left anchor from Y103C to T39C has an almost identical effect of increasing rate by 1.8-fold and increasing selectivity by +14% for S, whether the right anchor is L72C or S108C. At the same time, regardless of the identity of the left anchor, changing the right anchor from S108C to L72C increases rate by 4-fold and selectivity by +66%. The right anchor site was observed to have a greater influence than the left anchor site on the reactivity and selectivity in sulfoxidation of a wide scope of other ortho-, meta- and para- substituted substrates. The 1•Mb(T39C/L72C) showed the highest reactivity (TON up to 2.31 min(-1)) and selectivity (ee% up to 83%) among the different anchoring positions examined. Molecular dynamic simulations indicate that these changes in reactivity and selectivity may be due to the steric effects of the linker arms inside the protein cavity. These results indicate that small differences in the anchor positions can result in significant changes in reactivity and enantioselectivity, probably through steric interactions with substrates when they enter the substrate-binding pocket, and that the effects of right and left anchor positions are independent and additive in nature. The finding that the anchoring arms can influence both the positioning of the cofactor and steric control of substrate entrance will help design better functional metalloenzymes with predicted catalytic activity and selectivity.
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Affiliation(s)
- Dewain K. Garner
- Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, USA
| | - Lei Liang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
| | - David A. Barrios
- Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, USA
| | - Jun-Long Zhang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
| | - Yi Lu
- Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, USA
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9
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Deuss PJ, den Heeten R, Laan W, Kamer PCJ. Bioinspired Catalyst Design and Artificial Metalloenzymes. Chemistry 2011; 17:4680-98. [DOI: 10.1002/chem.201003646] [Citation(s) in RCA: 166] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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10
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Monney A, Venkatachalam G, Albrecht M. Synthesis and catalytic activity of histidine-based NHC ruthenium complexes. Dalton Trans 2011; 40:2716-9. [PMID: 21327245 DOI: 10.1039/c0dt01768j] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Main-chain C,N-protected histidine has been successfully alkylated at both side-chain nitrogens. The corresponding histidinium salt was metallated with ruthenium(II) by a transmetalation procedure, thus providing histidine-derived NHC ruthenium complexes. These bio-inspired complexes show appreciable activity in the catalytic transfer hydrogenation of ketones.
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Affiliation(s)
- Angèle Monney
- School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
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11
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Goswami RK, Huang ZZ, Forsyth JS, Felding-Habermann B, Sinha SC. Multiple catalytic aldolase antibodies suitable for chemical programming. Bioorg Med Chem Lett 2009; 19:3821-4. [PMID: 19428247 PMCID: PMC2923540 DOI: 10.1016/j.bmcl.2009.04.041] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2009] [Revised: 04/04/2009] [Accepted: 04/07/2009] [Indexed: 10/20/2022]
Abstract
Chemical programming of nine murine antibodies with catalytic aldolase activity was examined using compounds, equipped with diketone or pro-vinyl ketone linkers that inhibit integrin adhesion receptor functions. The results showed that most Abs were programmed using the diketone compounds in a manner similar to previously reported catalytic antibody 38C2. On the other hand, only those antibodies, which catalyzed the retro aldol reaction of the pro-vinyl ketone linkers efficiently, were programmed. Conjugated to integrin targeting compounds, at least three new antibodies, including 84G3, 85H6, and 90G8, exhibited high specific binding to human tumor cells expressing integrin alpha(v)beta(3.).
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Affiliation(s)
- Rajib Kumar Goswami
- The Skaggs Institute for Chemical Biology, Department of Molecular Biology, The Scripps Research Institute, La Jolla, CA 92037, USA
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12
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13
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Reetz MT, Rentzsch M, Pletsch A, Taglieber A, Hollmann F, Mondière RJG, Dickmann N, Höcker B, Cerrone S, Haeger MC, Sterner R. A Robust Protein Host for Anchoring Chelating Ligands and Organocatalysts. Chembiochem 2008; 9:552-64. [DOI: 10.1002/cbic.200700413] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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14
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15
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Sitthisak S, Knutsson L, Webb JW, Jayaswal RK. Molecular characterization of the copper transport system in Staphylococcus aureus. MICROBIOLOGY-SGM 2008; 153:4274-4283. [PMID: 18048940 DOI: 10.1099/mic.0.2007/009860-0] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The Staphylococcus aureus copA gene codes for a putative copper-translocating P-type ATPase and the downstream copZ gene codes for a copper chaperone. Genome database analyses demonstrate that these copper transport genes are highly conserved in S. aureus. The expression of copA and copZ was inducible by copper and to some extent by ferric and lead ions. A mutant strain containing a partially deleted copA gene was more sensitive than the parent strain to copper, ferric and lead ions. The copper-sensitive phenotype was due to the accumulation of intracellular copper and thus the copA product is involved in the export of copper ions. The metal-sensitive phenotype of the mutant was complemented in trans by a 2.7 kbp DNA containing copA. We have cloned and overexpressed the metal-binding domains of CopA and CopZ and have shown by site-directed mutagenesis that the cysteine residues in the CXXC metal-binding motif in CopA are involved in copper binding and thus play an important role in copper transport in S. aureus.
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Affiliation(s)
- Sutthirat Sitthisak
- Department of Biological Sciences, Illinois State University, Normal, IL 61790, USA
| | - Lawrence Knutsson
- Department of Biological Sciences, Illinois State University, Normal, IL 61790, USA
| | - James W Webb
- Department of Chemistry, Illinois State University, Normal, IL 61790, USA
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16
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Directed Evolution of Stereoselective Hybrid Catalysts. TOP ORGANOMETAL CHEM 2008. [DOI: 10.1007/3418_2008_12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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17
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18
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Reetz MT, Rentzsch M, Pletsch A, Maywald M, Maiwald P, Peyralans JJP, Maichele A, Fu Y, Jiao N, Hollmann F, Mondière R, Taglieber A. Directed evolution of enantioselective hybrid catalysts: a novel concept in asymmetric catalysis. Tetrahedron 2007. [DOI: 10.1016/j.tet.2007.03.177] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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19
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Reetz MT, Peyralans JJP, Maichele A, Fu Y, Maywald M. Directed evolution of hybrid enzymes: Evolving enantioselectivity of an achiral Rh-complex anchored to a protein. Chem Commun (Camb) 2006:4318-20. [PMID: 17047853 DOI: 10.1039/b610461d] [Citation(s) in RCA: 157] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The concept of utilizing the methods of directed evolution for tuning the enantioselectivity of synthetic achiral metal-ligand centers anchored to proteins has been implemented experimentally for the first time.
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Affiliation(s)
- Manfred T Reetz
- Max-Planck-Institut für Kohlenforschung, D-45470 Mülheim/Ruhr, Germany.
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20
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Yamaguchi H, Hirano T, Kiminami H, Taura D, Harada A. Asymmetric hydrogenation with antibody-achiral rhodium complex. Org Biomol Chem 2006; 4:3571-3. [PMID: 16990931 DOI: 10.1039/b609242j] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Monoclonal antibodies have been elicited against an achiral rhodium complex and this complex was used in the presence of a resultant antibody, 1G8, for the catalytic hydrogenation of 2-acetamidoacrylic acid to produce N-acetyl-L-alanine in high (>98%) enantiomeric excess.
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Affiliation(s)
- Hiroyasu Yamaguchi
- Department of Macromolecular Science, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
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21
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Zhou T, Hamer DH, Hendrickson WA, Sattentau QJ, Kwong PD. Interfacial metal and antibody recognition. Proc Natl Acad Sci U S A 2005; 102:14575-80. [PMID: 16195378 PMCID: PMC1237054 DOI: 10.1073/pnas.0507267102] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The unique ligation properties of metal ions are widely exploited by proteins, with approximately one-third of all proteins estimated to be metalloproteins. Although antibodies use various mechanisms for recognition, to our knowledge, none has ever been characterized that uses an interfacial metal. We previously described a family of CD4-reactive antibodies, the archetype being Q425. CD4:Q425 engagement does not interfere with CD4:HIV-1 gp120 envelope glycoprotein binding, but it blocks subsequent steps required for viral entry. Here, we use surface-plasmon resonance to show that Q425 requires calcium for recognition of CD4. Specifically, Q425 binding of calcium resulted in a 55,000-fold enhancement in affinity for CD4. X-ray crystallographic analyses of Q425 in the presence of Ca(2+), Ba(2+), or EDTA revealed an exposed metal-binding site, partially coordinated by five atoms contributed from four antibody complementarity-determining regions. The results suggest that Q425 recognition of CD4 involves direct ligation of antigen by the Q425-held calcium, with calcium binding each ligating atom of CD4 with approximately 1.5 kcal/mol of binding energy. This energetic contribution, which is greater than that from a typical protein atom, demonstrates how interfacial metal ligation can play a unique role in antigen recognition.
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Affiliation(s)
- Tongqing Zhou
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
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22
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Thomas CM, Ward TR. Artificial metalloenzymes: proteins as hosts for enantioselective catalysis. Chem Soc Rev 2005; 34:337-46. [PMID: 15778767 DOI: 10.1039/b314695m] [Citation(s) in RCA: 218] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Enantioselective catalysis is one of the most efficient ways to synthesize high-added-value enantiomerically pure organic compounds. As the subtle details which govern enantioselection cannot be reliably predicted or computed, catalysis relies more and more on a combinatorial approach. Biocatalysis offers an attractive, and often complementary, alternative for the synthesis of enantiopure products. From a combinatorial perspective, the potential of directed evolution techniques in optimizing an enzyme's selectivity is unrivaled. In this review, attention is focused on the construction of artificial metalloenzymes for enantioselective catalytic applications. Such systems are shown to combine properties of both homogeneous and enzymatic kingdoms. This review also includes our recent research results and implications in the development of new semisynthetic metalloproteins for the enantioselective hydrogenation of N-protected dehydro-amino acids.
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Affiliation(s)
- Christophe M Thomas
- Institut de Chimie, Universite de Neuchatel, Rue Emile-Argand 11, Case Postale 2, CH-2007, Neuchatel, Switzerland
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23
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Panella L, Broos J, Jin J, Fraaije MW, Janssen DB, Jeronimus-Stratingh M, Feringa BL, Minnaard AJ, de Vries JG. Merging homogeneous catalysis with biocatalysis; papain as hydrogenation catalyst. Chem Commun (Camb) 2005:5656-8. [PMID: 16292380 DOI: 10.1039/b512138h] [Citation(s) in RCA: 84] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Papain, modified at Cys-25 with a monodentate phosphite ligand and complexed with Rh(COD)2BF4, is an active catalyst in the hydrogenation of methyl 2-acetamidoacrylate.
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Affiliation(s)
- Lavinia Panella
- Department of Organic & Molecular Inorganic Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
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25
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Kalita B, Nicholas KM. Synthesis of α-substituted iminodiacetate ligands: α-hexadienyl derivatives for the selection of lipoxygenase mimics. Tetrahedron 2004. [DOI: 10.1016/j.tet.2004.08.029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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26
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Skander M, Humbert N, Collot J, Gradinaru J, Klein G, Loosli A, Sauser J, Zocchi A, Gilardoni F, Ward TR. Artificial Metalloenzymes: (Strept)avidin as Host for Enantioselective Hydrogenation by Achiral Biotinylated Rhodium−Diphosphine Complexes. J Am Chem Soc 2004; 126:14411-8. [PMID: 15521760 DOI: 10.1021/ja0476718] [Citation(s) in RCA: 135] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report on the generation of artificial metalloenzymes based on the noncovalent incorporation of biotinylated rhodium-diphosphine complexes in (strept)avidin as host proteins. A chemogenetic optimization procedure allows one to optimize the enantioselectivity for the reduction of acetamidoacrylic acid (up to 96% ee (R) in streptavidin S112G and up to 80% ee (S) in WT avidin). The association constant between a prototypical cationic biotinylated rhodium-diphosphine catalyst precursor and the host proteins was determined at neutral pH: log K(a) = 7.7 for avidin (pI = 10.4) and log K(a) = 7.1 for streptavidin (pI = 6.4). It is shown that the optimal operating conditions for the enantioselective reduction are 5 bar at 30 degrees C with a 1% catalyst loading.
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Affiliation(s)
- Myriem Skander
- Institute of Chemistry, University of Neuchâtel, Avenue Bellevaux 51, CP2, CH-2007 Neuchâtel, Switzerland
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Xu Y, Yamamoto N, Janda KD. Catalytic antibodies: hapten design strategies and screening methods. Bioorg Med Chem 2004; 12:5247-68. [PMID: 15388154 DOI: 10.1016/j.bmc.2004.03.077] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2004] [Accepted: 03/08/2004] [Indexed: 11/24/2022]
Abstract
Catalytic antibodies have emerged as powerful tools for the efficient and specific catalysis of a wide range of chemical transformations. Generating antibody catalysts that achieve enzymatic efficiency remains a challenging task, which has long been the source of great interest both in the design of more effective haptens for immunization and in the development of more direct and efficient screening methods for the selection of antibodies with desired catalytic capacities. In this review, we describe the development of different hapten design strategies, including a transition state analog (TSA) approach, 'bait-and-switch' catalysis, and reactive immunization. We also comment on recent developments in the screening process that allow for a more efficient identification of antibody catalysts.
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Affiliation(s)
- Yang Xu
- The Scripps Research Institute, Department of Chemistry and The Skaggs Institute of Chemical Biology, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA
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28
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Abstract
Although several powerful methods exist for the redesign of enzyme structure and function these are typically limited to the 20 most abundant proteinogenic amino acids. The use of chemical modification overcomes this limitation to allow virtually unlimited alteration of amino acid sidechain structures. If heterogeneous mixtures of enzyme products are to be avoided, however, the required chemistry should be efficient, selective and compatible with aqueous conditions. Recent advances have been made in the modification of proteinases, aminotransferases and redox enzymes.
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Affiliation(s)
- Benjamin G Davis
- Dyson Perrins Laboratory, Department of Chemistry, South Parks Road, Oxford OX1 3QY, UK.
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