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Zhao Y, Han Z, Zhu X, Chen B, Zhou L, Liu X, Liu H. Yeast Proteins: Proteomics, Extraction, Modification, Functional Characterization, and Structure: A Review. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:18774-18793. [PMID: 39146464 DOI: 10.1021/acs.jafc.4c04821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/17/2024]
Abstract
Proteins are essential for human tissues and organs, and they require adequate intake for normal physiological functions. With a growing global population, protein demand rises annually. Traditional animal and plant protein sources rely heavily on land and water, making it difficult to meet the increasing demand. The high protein content of yeast and the complete range of amino acids in yeast proteins make it a high-quality source of supplemental protein. Screening of high-protein yeast strains using proteomics is essential to increase the value of yeast protein resources and to promote the yeast protein industry. However, current yeast extraction methods are mainly alkaline solubilization and acid precipitation; therefore, it is necessary to develop more efficient and environmentally friendly techniques. In addition, the functional properties of yeast proteins limit their application in the food industry. To improve these properties, methods must be selected to modify the secondary and tertiary structures of yeast proteins. This paper explores how proteomic analysis can be used to identify nutrient-rich yeast strains, compares the process of preparing yeast proteins, and investigates how modification methods affect the function and structure of yeast proteins. It provides a theoretical basis for solving the problem of inadequate protein intake in China and explores future prospects.
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Affiliation(s)
- Yan Zhao
- School of Food and Health, Beijing Technology and Business University, Beijing 100080, China
| | - Zhaowei Han
- School of Food and Health, Beijing Technology and Business University, Beijing 100080, China
| | - Xuchun Zhu
- School of Food and Health, Beijing Technology and Business University, Beijing 100080, China
| | - Bingyu Chen
- Graduate School of Agriculture, Kyoto University, Kyoto606-8502, Japan
| | - Linyi Zhou
- School of Food and Health, Beijing Technology and Business University, Beijing 100080, China
| | - Xiaoyong Liu
- Henan Agricultural University, Zhengzhou, Henan 450002, China
| | - Hongzhi Liu
- School of Food and Health, Beijing Technology and Business University, Beijing 100080, China
- College of Food and Pharmaceutical Engineering, Guizhou Institute of Technology, Guiyang, Guizhou 550025, China
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Dosselli R, Grassl J, den Boer SPA, Kratz M, Moran JM, Boomsma JJ, Baer B. Protein-Level Interactions as Mediators of Sexual Conflict in Ants. Mol Cell Proteomics 2019; 18:S34-S45. [PMID: 30598476 PMCID: PMC6427229 DOI: 10.1074/mcp.ra118.000941] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 12/06/2018] [Indexed: 12/11/2022] Open
Abstract
All social insects with obligate reproductive division of labor evolved from strictly monogamous ancestors, but multiple queen-mating (polyandry) arose de novo, in several evolutionarily derived lineages. Polyandrous ant queens are inseminated soon after hatching and store sperm mixtures for a potential reproductive life of decades. However, they cannot re-mate later in life and are thus expected to control the loss of viable sperm because their lifetime reproductive success is ultimately sperm limited. In the leaf-cutting ant Atta colombica,, the survival of newly inseminated sperm is known to be compromised by seminal fluid of rival males and to be protected by secretions of the queen sperm storage organ (spermatheca). Here we investigate the main protein-level interactions that appear to mediate sperm competition dynamics and sperm preservation. We conducted an artificial insemination experiment and DIGE-based proteomics to identify proteomic changes when seminal fluid is exposed to spermathecal fluid followed by a mass spectrometry analysis of both secretions that allowed us to identify the sex-specific origins of the proteins that had changed in abundance. We found that spermathecal fluid targets only seven (2%) of the identified seminal fluid proteins for degradation, including two proteolytic serine proteases, a SERPIN inhibitor, and a semen-liquefying acid phosphatase. In vitro, and in vivo, experiments provided further confirmation that these proteins are key molecules mediating sexual conflict over sperm competition and viability preservation during sperm storage. In vitro, exposure to spermathecal fluid reduced the capacity of seminal fluid to compromise survival of rival sperm in a matter of hours and biochemical inhibition of these seminal fluid proteins largely eliminated that adverse effect. Our findings indicate that A. colombica, queens are in control of sperm competition and sperm storage, a capacity that has not been documented in other animals but is predicted to have independently evolved in other polyandrous social insects.
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Affiliation(s)
- Ryan Dosselli
- From the ‡ARC Centre of Excellence in Plant Energy Biology, School of Molecular Sciences, Bayliss Building (M316),; Centre for Evolutionary Biology, School of Biological Sciences (M092),; Honey Bee Health Research Group, School of Molecular Sciences (M316), The University of Western Australia, Crawley WA 6009, Australia
| | - Julia Grassl
- From the ‡ARC Centre of Excellence in Plant Energy Biology, School of Molecular Sciences, Bayliss Building (M316),; Honey Bee Health Research Group, School of Molecular Sciences (M316), The University of Western Australia, Crawley WA 6009, Australia
| | - Susanne P A den Boer
- From the ‡ARC Centre of Excellence in Plant Energy Biology, School of Molecular Sciences, Bayliss Building (M316),; Centre for Social Evolution, Department of Biology, University of Copenhagen, Universitetsparken 15, 2100 Copenhagen, Denmark
| | - Madlen Kratz
- From the ‡ARC Centre of Excellence in Plant Energy Biology, School of Molecular Sciences, Bayliss Building (M316),; Honey Bee Health Research Group, School of Molecular Sciences (M316), The University of Western Australia, Crawley WA 6009, Australia
| | - Jessica M Moran
- From the ‡ARC Centre of Excellence in Plant Energy Biology, School of Molecular Sciences, Bayliss Building (M316),; Centre for Evolutionary Biology, School of Biological Sciences (M092),; Honey Bee Health Research Group, School of Molecular Sciences (M316), The University of Western Australia, Crawley WA 6009, Australia
| | - Jacobus J Boomsma
- Centre for Social Evolution, Department of Biology, University of Copenhagen, Universitetsparken 15, 2100 Copenhagen, Denmark;.
| | - Boris Baer
- Center for Integrative Bee Research (CIBER), Department of Entomology, The University of California, Riverside CA 92506.
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Becker E, Com E, Lavigne R, Guilleux MH, Evrard B, Pineau C, Primig M. The protein expression landscape of mitosis and meiosis in diploid budding yeast. J Proteomics 2017; 156:5-19. [DOI: 10.1016/j.jprot.2016.12.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Revised: 12/14/2016] [Accepted: 12/26/2016] [Indexed: 12/12/2022]
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Wen FP, Guo YS, Hu Y, Liu WX, Wang Q, Wang YT, Yu HY, Tang CM, Yang J, Zhou T, Xie ZP, Sha JH, Guo X, Li W. Distinct temporal requirements for autophagy and the proteasome in yeast meiosis. Autophagy 2016; 12:671-88. [PMID: 27050457 DOI: 10.1080/15548627.2016.1149659] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Meiosis is a special type of cellular renovation that involves 2 successive cell divisions and a single round of DNA replication. Two major degradation systems, the autophagy-lysosome and the ubiquitin-proteasome, are involved in meiosis, but their roles have yet to be elucidated. Here we show that autophagy mainly affects the initiation of meiosis but not the nuclear division. Autophagy works not only by serving as a dynamic recycling system but also by eliminating some negative meiotic regulators such as Ego4 (Ynr034w-a). In a quantitative proteomics study, the proteasome was found to be significantly upregulated during meiotic divisions. We found that proteasomal activity is essential to the 2 successive meiotic nuclear divisions but not for the initiation of meiosis. Our study defines the roles of autophagy and the proteasome in meiosis: Autophagy mainly affects the initiation of meiosis, whereas the proteasome mainly affects the 2 successive meiotic divisions.
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Affiliation(s)
- Fu-ping Wen
- a State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China.,c University of Chinese Academy of Sciences , Beijing , China
| | - Yue-shuai Guo
- b State Key Laboratory of Reproductive Medicine, Collaborative Innovation Center of Genetics and Development , Department of Histology and Embryology , Nanjing Medical University , Nanjing , Jiangsu , China
| | - Yang Hu
- a State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China.,d College of Life Sciences, China West Normal University , Nanchong , China
| | - Wei-xiao Liu
- a State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China
| | - Qian Wang
- a State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China.,c University of Chinese Academy of Sciences , Beijing , China
| | - Yuan-ting Wang
- a State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China.,c University of Chinese Academy of Sciences , Beijing , China
| | - Hai-Yan Yu
- a State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China.,c University of Chinese Academy of Sciences , Beijing , China
| | - Chao-ming Tang
- a State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China.,c University of Chinese Academy of Sciences , Beijing , China
| | - Jun Yang
- d College of Life Sciences, China West Normal University , Nanchong , China
| | - Tao Zhou
- b State Key Laboratory of Reproductive Medicine, Collaborative Innovation Center of Genetics and Development , Department of Histology and Embryology , Nanjing Medical University , Nanjing , Jiangsu , China
| | - Zhi-ping Xie
- e School of Life Sciences and Biotechnology, Shanghai Jiao Tong University , Shanghai , China
| | - Jia-hao Sha
- b State Key Laboratory of Reproductive Medicine, Collaborative Innovation Center of Genetics and Development , Department of Histology and Embryology , Nanjing Medical University , Nanjing , Jiangsu , China
| | - Xuejiang Guo
- b State Key Laboratory of Reproductive Medicine, Collaborative Innovation Center of Genetics and Development , Department of Histology and Embryology , Nanjing Medical University , Nanjing , Jiangsu , China
| | - Wei Li
- a State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China
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Honigberg SM. Similar environments but diverse fates: Responses of budding yeast to nutrient deprivation. MICROBIAL CELL 2016; 3:302-328. [PMID: 27917388 PMCID: PMC5134742 DOI: 10.15698/mic2016.08.516] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Diploid budding yeast (Saccharomyces cerevisiae) can adopt one
of several alternative differentiation fates in response to nutrient limitation,
and each of these fates provides distinct biological functions. When different
strain backgrounds are taken into account, these various fates occur in response
to similar environmental cues, are regulated by the same signal transduction
pathways, and share many of the same master regulators. I propose that the
relationships between fate choice, environmental cues and signaling pathways are
not Boolean, but involve graded levels of signals, pathway activation and
master-regulator activity. In the absence of large differences between
environmental cues, small differences in the concentration of cues may be
reinforced by cell-to-cell signals. These signals are particularly essential for
fate determination within communities, such as colonies and biofilms, where fate
choice varies dramatically from one region of the community to another. The lack
of Boolean relationships between cues, signaling pathways, master regulators and
cell fates may allow yeast communities to respond appropriately to the wide
range of environments they encounter in nature.
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Affiliation(s)
- Saul M Honigberg
- Division of Cell Biology and Biophysics, University of Missouri-Kansas City, 5007 Rockhill Rd, Kansas City MO 64110, USA
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Sensing and signaling of oxidative stress in chloroplasts by inactivation of the SAL1 phosphoadenosine phosphatase. Proc Natl Acad Sci U S A 2016; 113:E4567-76. [PMID: 27432987 PMCID: PMC4978270 DOI: 10.1073/pnas.1604936113] [Citation(s) in RCA: 113] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Intracellular signaling during oxidative stress is complex, with organelle-to-nucleus retrograde communication pathways ill-defined or incomplete. Here we identify the 3'-phosphoadenosine 5'-phosphate (PAP) phosphatase SAL1 as a previously unidentified and conserved oxidative stress sensor in plant chloroplasts. Arabidopsis thaliana SAL1 (AtSAL1) senses changes in photosynthetic redox poise, hydrogen peroxide, and superoxide concentrations in chloroplasts via redox regulatory mechanisms. AtSAL1 phosphatase activity is suppressed by dimerization, intramolecular disulfide formation, and glutathionylation, allowing accumulation of its substrate, PAP, a chloroplast stress retrograde signal that regulates expression of plastid redox associated nuclear genes (PRANGs). This redox regulation of SAL1 for activation of chloroplast signaling is conserved in the plant kingdom, and the plant protein has evolved enhanced redox sensitivity compared with its yeast ortholog. Our results indicate that in addition to sulfur metabolism, SAL1 orthologs have evolved secondary functions in oxidative stress sensing in the plant kingdom.
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Cell Differentiation and Spatial Organization in Yeast Colonies: Role of Cell-Wall Integrity Pathway. Genetics 2015; 201:1427-38. [PMID: 26510787 DOI: 10.1534/genetics.115.180919] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Accepted: 10/10/2015] [Indexed: 11/18/2022] Open
Abstract
Many microbial communities contain organized patterns of cell types, yet relatively little is known about the mechanism or function of this organization. In colonies of the budding yeast Saccharomyces cerevisiae, sporulation occurs in a highly organized pattern, with a top layer of sporulating cells sharply separated from an underlying layer of nonsporulating cells. A mutant screen identified the Mpk1 and Bck1 kinases of the cell-wall integrity (CWI) pathway as specifically required for sporulation in colonies. The CWI pathway was induced as colonies matured, and a target of this pathway, the Rlm1 transcription factor, was activated specifically in the nonsporulating cell layer, here termed feeder cells. Rlm1 stimulates permeabilization of feeder cells and promotes sporulation in an overlying cell layer through a cell-nonautonomous mechanism. The relative fraction of the colony apportioned to feeder cells depends on nutrient environment, potentially buffering sexual reproduction against suboptimal environments.
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Collins ES, Butt AQ, Gibson DS, Dunn MJ, Fearon U, van Kuijk AW, Gerlag DM, Pontifex E, Veale DJ, Tak PP, FitzGerald O, Pennington SR. A clinically based protein discovery strategy to identify potential biomarkers of response to anti-TNF-α treatment of psoriatic arthritis. Proteomics Clin Appl 2015; 10:645-62. [PMID: 26108918 DOI: 10.1002/prca.201500051] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Revised: 06/05/2015] [Accepted: 06/22/2015] [Indexed: 12/19/2022]
Abstract
PURPOSE Psoriatic arthritis (PsA) can be treated using biologic therapies targeting biomolecules such as tumor necrosis factor alpha, interleukins (IL)-17 and IL-23. Although 70% PsA patients respond well to therapy, 30% patients show no or limited clinical improvement. Biomarkers that predict response to therapy would help to avoid unnecessary use of expensive biologics in nonresponding patients and enable alternative treatments to be explored. EXPERIMENTAL DESIGN Patient synovial tissue samples from two clinical studies were analysed using difference in-gel electrophoresis-based proteomics to identify protein expression differences in response to anti-TNF-α treatment. Subsequent multiplexed MRM measurements were used to verify potential biomarkers. RESULTS A total of 119 proteins were differentially expressed (p<0.05) in response to anti-TNF-α treatment and 25 proteins were differentially expressed (p<0.05) between "good responders" and "poor responders". From these differentially expressed proteins, MRM assays were developed for four proteins to explore their potential as treatment predictive biomarkers. CONCLUSION AND CLINICAL RELEVANCE Gel-based proteomics strategy has demonstrated differential protein expression in synovial tissue of PsA patients, in response to anti-TNF-α treatment. Development of multiplex MRM assays to these differentially expressed proteins has the potential to predict response to therapy and allow alternative, more effective treatments to be explored sooner.
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Affiliation(s)
- Emily S Collins
- School of Medicine and Medical Science, UCD Conway Institute, University College Dublin, Belfield, Dublin, Ireland.,Department of Rheumatology, St Vincent's University Hospital, Elm Park, Dublin, Ireland
| | - Aisha Q Butt
- School of Medicine and Medical Science, UCD Conway Institute, University College Dublin, Belfield, Dublin, Ireland
| | - David S Gibson
- Northern Ireland Centre for Stratified Medicine, University of Ulster, C-TRIC, Londonderry, UK
| | - Michael J Dunn
- School of Medicine and Medical Science, UCD Conway Institute, University College Dublin, Belfield, Dublin, Ireland
| | - Ursula Fearon
- School of Medicine and Medical Science, UCD Conway Institute, University College Dublin, Belfield, Dublin, Ireland.,Department of Rheumatology, St Vincent's University Hospital, Elm Park, Dublin, Ireland
| | - Arno W van Kuijk
- Department of Clinical Immunology and Rheumatology, F4-105, Academic Medical Centre/University of Amsterdam, Amsterdam, The Netherlands
| | - Danielle M Gerlag
- Department of Clinical Immunology and Rheumatology, F4-105, Academic Medical Centre/University of Amsterdam, Amsterdam, The Netherlands
| | - Eliza Pontifex
- Department of Rheumatology, St Vincent's University Hospital, Elm Park, Dublin, Ireland
| | - Douglas J Veale
- School of Medicine and Medical Science, UCD Conway Institute, University College Dublin, Belfield, Dublin, Ireland.,Department of Rheumatology, St Vincent's University Hospital, Elm Park, Dublin, Ireland
| | - Paul P Tak
- Department of Clinical Immunology and Rheumatology, F4-105, Academic Medical Centre/University of Amsterdam, Amsterdam, The Netherlands
| | - Oliver FitzGerald
- School of Medicine and Medical Science, UCD Conway Institute, University College Dublin, Belfield, Dublin, Ireland.,Department of Rheumatology, St Vincent's University Hospital, Elm Park, Dublin, Ireland
| | - Stephen R Pennington
- School of Medicine and Medical Science, UCD Conway Institute, University College Dublin, Belfield, Dublin, Ireland
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Turner BE, Basecke SM, Bazan GC, Dodge ES, Haire CM, Heussman DJ, Johnson CL, Mukai CK, Naccarati AM, Norton SJ, Sato JR, Talavera CO, Wade MV, Hillers KJ. Proteomic identification of germline proteins in Caenorhabditis elegans. WORM 2015; 4:e1008903. [PMID: 26435885 DOI: 10.1080/21624054.2015.1008903] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Revised: 11/30/2014] [Accepted: 01/13/2015] [Indexed: 01/06/2023]
Abstract
Sexual reproduction involves fusion of 2 haploid gametes to form diploid offspring with genetic contributions from both parents. Gamete formation represents a unique developmental program involving the action of numerous germline-specific proteins. In an attempt to identify novel proteins involved in reproduction and embryonic development, we have carried out a proteomic characterization of the process in Caenorhabditis elegans. To identify candidate proteins, we used 2D gel electrophoresis (2DGE) to compare protein abundance in nucleus-enriched extracts from wild-type C. elegans, and in extracts from mutant worms with greatly reduced gonads (glp-4(bn2) worms reared at 25°C); 84 proteins whose abundance correlated with germline presence were identified. To validate candidates, we used feeding RNAi to deplete candidate proteins, and looked for reduction in fertility and/or germline cytological defects. Of 20 candidates so screened for involvement in fertility, depletion of 13 (65%) caused a significant reduction in fertility, and 6 (30%) resulted in sterility (<5 % of wild-type fertility). Five of the 13 proteins with demonstrated roles in fertility have not previously been implicated in germline function. The high frequency of defects observed after RNAi depletion of candidate proteins suggests that this approach is effective at identifying germline proteins, thus contributing to our understanding of this complex organ.
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Affiliation(s)
- B Elizabeth Turner
- Department of Chemistry and Biochemistry; California Polytechnic State University ; San Luis Obispo, CA USA ; ; Department of Biological Sciences; California Polytechnic State University ; San Luis Obispo, CA USA
| | - Sophia M Basecke
- Department of Biological Sciences; California Polytechnic State University ; San Luis Obispo, CA USA
| | - Grace C Bazan
- Department of Biological Sciences; California Polytechnic State University ; San Luis Obispo, CA USA
| | - Eric S Dodge
- Department of Chemistry and Biochemistry; California Polytechnic State University ; San Luis Obispo, CA USA
| | - Cassy M Haire
- Department of Biological Sciences; California Polytechnic State University ; San Luis Obispo, CA USA
| | - Dylan J Heussman
- Department of Chemistry and Biochemistry; California Polytechnic State University ; San Luis Obispo, CA USA
| | - Chelsey L Johnson
- Department of Biological Sciences; California Polytechnic State University ; San Luis Obispo, CA USA
| | - Chelsea K Mukai
- Department of Biological Sciences; California Polytechnic State University ; San Luis Obispo, CA USA
| | - Adrianna M Naccarati
- Department of Biological Sciences; California Polytechnic State University ; San Luis Obispo, CA USA
| | - Sunny-June Norton
- Department of Biological Sciences; California Polytechnic State University ; San Luis Obispo, CA USA
| | - Jennifer R Sato
- Department of Biological Sciences; California Polytechnic State University ; San Luis Obispo, CA USA
| | - Chihara O Talavera
- Department of Chemistry and Biochemistry; California Polytechnic State University ; San Luis Obispo, CA USA
| | - Michael V Wade
- Department of Biological Sciences; California Polytechnic State University ; San Luis Obispo, CA USA
| | - Kenneth J Hillers
- Department of Biological Sciences; California Polytechnic State University ; San Luis Obispo, CA USA
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Comparative proteomics of mitosis and meiosis in Saccharomyces cerevisiae. J Proteomics 2014; 109:1-15. [DOI: 10.1016/j.jprot.2014.06.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2013] [Revised: 05/21/2014] [Accepted: 06/08/2014] [Indexed: 12/18/2022]
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Krapp A, Simanis V. Dma1-dependent degradation of Septation Initiation Network proteins during meiosis in Schizosaccharomyces pombe. J Cell Sci 2014; 127:3149-61. [DOI: 10.1242/jcs.148585] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The Schizosaccharomyces pombe septation initiation network (SIN) is required for cytokinesis during vegetative growth and spore formation during meiosis. Regulation of the SIN during mitosis has been studied extensively, but less is known about its meiotic regulation. Here, we show that several aspects of the SIN regulation differ between mitosis and meiosis. First, the presence of GTP-bound spg1p is not the main determinant of the timing of cdc7p and sid1p association with the SPB during meiosis. Second, the localisation dependencies of SIN proteins differ from those in mitotic cells, suggesting a modified functional organisation of the SIN during meiosis. Third, there is stage-specific degradation of SIN components in meiosis; byr4p is degraded after meiosis I, while the degradation of cdc7p, cdc11p and sid4p occurs after the second meiotic division and depends upon the ubiquitin ligase dma1p. Finally, dma1p-dependent degradation is not restricted to the SIN, for we show that dma1p is needed for the degradation of mcp6p/hrs1p in meiosis I. Together, these data suggest that stage-specific targetted proteolysis will play an important role in regulating meiotic progression.
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Faergestad EM, Rye MB, Nhek S, Hollung K, Grove H. The use of chemometrics to analyse protein patterns from gel electrophoresis. ACTA CHROMATOGR 2011. [DOI: 10.1556/achrom.23.2011.1.1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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13
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Scaife C, Mowlds P, Grassl J, Polden J, Daly CN, Wynne K, Dunn MJ, Clyne RK. 2-D DIGE analysis of the budding yeast pH 6-11 proteome in meiosis. Proteomics 2010; 10:4401-14. [DOI: 10.1002/pmic.201000376] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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14
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Current awareness on yeast. Yeast 2010. [DOI: 10.1002/yea.1720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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