LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 40

Search options

  1. Article ; Online: Nvp63 and nvPIWIL1 Suppress Retrotransposon Activation in the Sea Anemone

    Bamberger, Casimir / Pankow, Sandra / Yates, John R

    Journal of proteome research

    2022  Volume 21, Issue 11, Page(s) 2586–2595

    Abstract: The transcription factors p63 and p73 have high similarity to the tumor suppressor protein p53. While the importance of p53 in DNA damage control is established, the functions of p63 or p73 remain elusive. Here, we analyzed nvp63, the cnidarian homologue ...

    Abstract The transcription factors p63 and p73 have high similarity to the tumor suppressor protein p53. While the importance of p53 in DNA damage control is established, the functions of p63 or p73 remain elusive. Here, we analyzed nvp63, the cnidarian homologue of p63, that is expressed in the mesenteries of the starlet sea anemone
    MeSH term(s) Animals ; Sea Anemones/genetics ; Sea Anemones/metabolism ; Retroelements/genetics ; Phylogeny ; Biological Evolution ; Tumor Suppressor Protein p53/genetics
    Chemical Substances Retroelements ; Tumor Suppressor Protein p53
    Language English
    Publishing date 2022-10-04
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 2078618-9
    ISSN 1535-3907 ; 1535-3893
    ISSN (online) 1535-3907
    ISSN 1535-3893
    DOI 10.1021/acs.jproteome.2c00296
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article ; Online: Quantitative structural proteomics in living cells by covalent protein painting.

    Son, Ahrum / Pankow, Sandra / Bamberger, Tom Casimir / Yates, John R

    Methods in enzymology

    2023  Volume 679, Page(s) 33–63

    Abstract: The fold and conformation of proteins are key to successful cellular function, but all techniques for protein structure determination are performed in an artificial environment with highly purified proteins. While protein conformations have been solved ... ...

    Abstract The fold and conformation of proteins are key to successful cellular function, but all techniques for protein structure determination are performed in an artificial environment with highly purified proteins. While protein conformations have been solved to atomic resolution and modern protein structure prediction tools rapidly generate near accurate models of proteins, there is an unmet need to uncover the conformations of proteins in living cells. Here, we describe Covalent Protein Painting (CPP), a simple and fast method to infer structural information on protein conformation in cells with a quantitative protein footprinting technology. CPP monitors the conformational landscape of the 3D proteome in cells with high sensitivity and throughput. A key advantage of CPP is its' ability to quantitatively compare the 3D proteomes between different experimental conditions and to discover significant changes in the protein conformations. We detail how to perform a successful CPP experiment, the factors to consider before performing the experiment, and how to interpret the results.
    MeSH term(s) Proteomics/methods ; Protein Conformation ; Proteome ; Mass Spectrometry/methods ; Isotope Labeling/methods
    Chemical Substances Proteome
    Language English
    Publishing date 2023-01-04
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ISSN 1557-7988
    ISSN (online) 1557-7988
    DOI 10.1016/bs.mie.2022.08.046
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: Cancer Conformational Landscape Shapes Tumorigenesis.

    Bamberger, Casimir / Diedrich, Jolene / Martìnez-Bartholomé, Salvador / Yates, John R

    Journal of proteome research

    2022  Volume 21, Issue 4, Page(s) 1017–1028

    Abstract: During tumorigenesis, DNA mutations in protein coding sequences can alter amino acid sequences which can change the structures of proteins. While the 3D structure of mutated proteins has been studied with atomic resolution, the precise impact of somatic ... ...

    Abstract During tumorigenesis, DNA mutations in protein coding sequences can alter amino acid sequences which can change the structures of proteins. While the 3D structure of mutated proteins has been studied with atomic resolution, the precise impact of somatic mutations on the 3D proteome during malignant transformation remains unknown because methods to reveal
    MeSH term(s) Carcinogenesis/genetics ; Humans ; Mass Spectrometry ; Neoplasms/genetics ; Proteome/chemistry ; Proteome/genetics ; Proteostasis
    Chemical Substances Proteome
    Language English
    Publishing date 2022-03-10
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 2078618-9
    ISSN 1535-3907 ; 1535-3893
    ISSN (online) 1535-3907
    ISSN 1535-3893
    DOI 10.1021/acs.jproteome.1c00906
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: SMG1 and CDK12 Link ΔNp63α Phosphorylation to RNA Surveillance in Keratinocytes.

    Bamberger, Casimir / Pankow, Sandra / Yates, John R

    Journal of proteome research

    2021  Volume 20, Issue 12, Page(s) 5347–5358

    Abstract: The tumor suppressor p53-like protein p63 is required for self-renewal of epidermal tissues. Loss of p63 or exposure to ultraviolet (UV) irradiation triggers terminal differentiation in keratinocytes. However, it remains unclear how p63 diverts epidermal ...

    Abstract The tumor suppressor p53-like protein p63 is required for self-renewal of epidermal tissues. Loss of p63 or exposure to ultraviolet (UV) irradiation triggers terminal differentiation in keratinocytes. However, it remains unclear how p63 diverts epidermal cells from proliferation to terminal differentiation, thereby contributing to successful tissue self-renewal. Here, we used bottom-up proteomics to identify the proteome at the chromatin in normal human epidermal keratinocytes following UV irradiation and p63 depletion. We found that loss of p63 increased DNA damage and that UV irradiation recruited the cyclin-dependent kinase CDK12 and the serine/threonine protein kinase SMG1 to chromatin only in the presence of p63. A post-translational modification analysis of ΔNp63α with mass spectrometry revealed that phosphorylation of T
    MeSH term(s) Cyclin-Dependent Kinases/metabolism ; Humans ; Keratinocytes/metabolism ; Phosphorylation ; Protein Serine-Threonine Kinases ; RNA/metabolism ; Trans-Activators/genetics ; Transcription Factors ; Tumor Suppressor Proteins ; Ultraviolet Rays
    Chemical Substances TP63 protein, human ; Trans-Activators ; Transcription Factors ; Tumor Suppressor Proteins ; RNA (63231-63-0) ; Protein Serine-Threonine Kinases (EC 2.7.11.1) ; SMG1 protein, human (EC 2.7.11.1) ; CDK12 protein, human (EC 2.7.11.22) ; Cyclin-Dependent Kinases (EC 2.7.11.22)
    Language English
    Publishing date 2021-11-11
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 2078618-9
    ISSN 1535-3907 ; 1535-3893
    ISSN (online) 1535-3907
    ISSN 1535-3893
    DOI 10.1021/acs.jproteome.1c00427
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article: SMG1 and CDK12 Link ΔNp63α Phosphorylation to RNA Surveillance in Keratinocytes

    Bamberger, Casimir / Pankow, Sandra / Yates, John R.

    Journal of proteome research. 2021 Nov. 11, v. 20, no. 12

    2021  

    Abstract: The tumor suppressor p53-like protein p63 is required for self-renewal of epidermal tissues. Loss of p63 or exposure to ultraviolet (UV) irradiation triggers terminal differentiation in keratinocytes. However, it remains unclear how p63 diverts epidermal ...

    Abstract The tumor suppressor p53-like protein p63 is required for self-renewal of epidermal tissues. Loss of p63 or exposure to ultraviolet (UV) irradiation triggers terminal differentiation in keratinocytes. However, it remains unclear how p63 diverts epidermal cells from proliferation to terminal differentiation, thereby contributing to successful tissue self-renewal. Here, we used bottom-up proteomics to identify the proteome at the chromatin in normal human epidermal keratinocytes following UV irradiation and p63 depletion. We found that loss of p63 increased DNA damage and that UV irradiation recruited the cyclin-dependent kinase CDK12 and the serine/threonine protein kinase SMG1 to chromatin only in the presence of p63. A post-translational modification analysis of ΔNp63α with mass spectrometry revealed that phosphorylation of T₃₅₇/S₃₅₈ and S₃₆₈ was dependent on SMG1, whereas CDK12 increased the phosphorylation of ΔNp63α at S₆₆/S₆₈ and S₃₀₁. Indirect phosphorylation of ΔNp63α in the presence of SMG1 enabled ΔNp63α to bind to the tumor suppressor p53-specific DNA recognition sequence, whereas CDK12 rendered ΔNp63α less responsive to UV irradiation and was not required for specific DNA binding. CDK12 and SMG1 are known to regulate the transcription and splicing of RNAs and the decay of nonsense RNAs, respectively, and a subset of p63-specific protein–protein interactions at the chromatin also linked p63 to RNA transcription and decay. We observed that in the absence of p63, UV irradiation resulted in more ORF1p. ORF1p is the first protein product of the intronless non-LTR retrotransposon LINE-1, indicating a derailed surveillance of RNA processing and/or translation. Our results suggest that p63 phosphorylation and transcriptional activation might correspond to altered RNA processing and/or translation to protect proliferating keratinocytes from increased genotoxic stress.
    Keywords DNA ; DNA damage ; RNA ; chromatin ; cyclin-dependent kinase ; humans ; irradiation ; keratinocytes ; mass spectrometry ; monitoring ; mutagens ; neoplasms ; phosphorylation ; post-translational modification ; proteome ; proteomics ; research ; retrotransposons ; serine ; threonine ; transcriptional activation ; ultraviolet radiation
    Language English
    Dates of publication 2021-1111
    Size p. 5347-5358.
    Publishing place American Chemical Society
    Document type Article
    ZDB-ID 2078618-9
    ISSN 1535-3907 ; 1535-3893
    ISSN (online) 1535-3907
    ISSN 1535-3893
    DOI 10.1021/acs.jproteome.1c00427
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  6. Article: Cancer Conformational Landscape Shapes Tumorigenesis

    Bamberger, Casimir / Diedrich, Jolene / Martìnez-Bartholomé, Salvador / Yates, John R.

    Journal of proteome research. 2022 Mar. 10, v. 21, no. 4

    2022  

    Abstract: During tumorigenesis, DNA mutations in protein coding sequences can alter amino acid sequences which can change the structures of proteins. While the 3D structure of mutated proteins has been studied with atomic resolution, the precise impact of somatic ... ...

    Abstract During tumorigenesis, DNA mutations in protein coding sequences can alter amino acid sequences which can change the structures of proteins. While the 3D structure of mutated proteins has been studied with atomic resolution, the precise impact of somatic mutations on the 3D proteome during malignant transformation remains unknown because methods to reveal in vivo protein structures in high throughput are limited. Here, we measured the accessibility of the lysine ε-amine for chemical modification across proteomes using covalent protein painting (CPP) to indirectly determine alterations in the 3D proteome. CPP is a novel, high-throughput quantitative mass spectrometric method that surveyed a total of 8052 lysine sites across the 60 cell lines of the well-studied anticancer cell line panel (NCI60). Overall, 5.2 structural alterations differentiated any cancer cell line from the other 59. Structural aberrations in 98 effector proteins correlated with the selected presence of 90 commonly mutated proteins in the NCI60 cell line panel, suggesting that different tumor genotypes reshape a limited set of effector proteins. We searched our dataset for druggable conformational aberrations and identified 49 changes in the cancer conformational landscape that correlated with the growth inhibition profiles of 300 drug candidates out of 50,000 small molecules. We found that alterations in heat shock proteins are key predictors of anticancer drug efficacy, which implies that the proteostasis network may have a general but hitherto unrecognized role in maintaining malignancy. Individual lysine sites may serve as biomarkers to guide drug selection or may be directly targeted for anticancer drug development.
    Keywords DNA ; antineoplastic agents ; biomarkers ; carcinogenesis ; cell lines ; data collection ; drug development ; growth retardation ; heat stress ; lysine ; mass spectrometry ; neoplasm cells ; neoplasms ; proteome ; research
    Language English
    Dates of publication 2022-0310
    Size p. 1017-1028.
    Publishing place American Chemical Society
    Document type Article
    ZDB-ID 2078618-9
    ISSN 1535-3907 ; 1535-3893
    ISSN (online) 1535-3907
    ISSN 1535-3893
    DOI 10.1021/acs.jproteome.1c00906
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  7. Article: In vivo

    Son, Ahrum / Kim, Hyunsoo / Diedrich, Jolene K / Bamberger, Casimir / McClatchy, Daniel B / Yates, John R

    bioRxiv : the preprint server for biology

    2023  

    Abstract: Numerous studies have investigated changes in protein expression at the system level using proteomic mass spectrometry, but only recently have studies explored the structure of proteins at the proteome level. We developed covalent protein painting (CPP), ...

    Abstract Numerous studies have investigated changes in protein expression at the system level using proteomic mass spectrometry, but only recently have studies explored the structure of proteins at the proteome level. We developed covalent protein painting (CPP), a protein footprinting method that quantitatively labels exposed lysine, and have now extended the method to whole intact animals to measure surface accessibility as a surrogate of in vivo protein conformations. We investigated how protein structure and protein expression change as Alzheimer's disease (AD) progresses by conducting in vivo whole animal labeling of AD mice. This allowed us to analyze broadly protein accessibility in various organs over the course of AD. We observed that structural changes of proteins related to 'energy generation,' 'carbon metabolism,' and 'metal ion homeostasis' preceded expression changes in the brain. We found that proteins in certain pathways undergoing structural changes were significantly co-regulated in the brain, kidney, muscle, and spleen.
    Language English
    Publishing date 2023-05-30
    Publishing country United States
    Document type Preprint
    DOI 10.1101/2023.05.29.542496
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: Analysis of the Tropism of SARS-CoV-2 Based on the Host Interactome of the Spike Protein.

    Bamberger, Casimir / Pankow, Sandra / Martínez-Bartolomé, Salvador / Diedrich, Jolene K / Park, Robin S K / Yates, John R

    Journal of proteome research

    2023  Volume 22, Issue 12, Page(s) 3742–3753

    Abstract: The β-coronavirus SARS-CoV-2 causes severe acute respiratory syndrome (COVID-19) in humans. It enters and infects epithelial airway cells upon binding of the receptor binding domain (RBD) of the virus entry protein spike to the host receptor protein ... ...

    Abstract The β-coronavirus SARS-CoV-2 causes severe acute respiratory syndrome (COVID-19) in humans. It enters and infects epithelial airway cells upon binding of the receptor binding domain (RBD) of the virus entry protein spike to the host receptor protein Angiotensin Converting Enzyme 2 (ACE2). Here, we used coimmunoprecipitation coupled with bottom-up mass spectrometry to identify host proteins that engaged with the spike protein in human bronchial epithelial cells (16HBEo
    MeSH term(s) Humans ; SARS-CoV-2/metabolism ; COVID-19 ; Angiotensin-Converting Enzyme 2/metabolism ; Spike Glycoprotein, Coronavirus/metabolism ; Laminin ; Protein Binding ; Viral Proteins/metabolism ; Tropism
    Chemical Substances Angiotensin-Converting Enzyme 2 (EC 3.4.17.23) ; spike protein, SARS-CoV-2 ; Spike Glycoprotein, Coronavirus ; Laminin ; Viral Proteins
    Language English
    Publishing date 2023-11-08
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2078618-9
    ISSN 1535-3907 ; 1535-3893
    ISSN (online) 1535-3907
    ISSN 1535-3893
    DOI 10.1021/acs.jproteome.3c00387
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article ; Online: A posttranslational modification code for CFTR maturation is altered in cystic fibrosis.

    Pankow, Sandra / Bamberger, Casimir / Yates, John R

    Science signaling

    2019  Volume 12, Issue 562

    Abstract: The multistep process regulating the maturation of membrane proteins in the endoplasmic reticulum (ER) and the secretory pathway is disrupted in many protein misfolding disorders. Mutations in the ion channel CFTR that impair its folding and subsequent ... ...

    Abstract The multistep process regulating the maturation of membrane proteins in the endoplasmic reticulum (ER) and the secretory pathway is disrupted in many protein misfolding disorders. Mutations in the ion channel CFTR that impair its folding and subsequent localization to the plasma membrane cause cystic fibrosis (CF), an inherited and eventually lethal disease that impairs the function of multiple organs, mostly the lungs. Here, we found that proper maturation of CFTR is dependent on cross-talk between phosphorylation and methylation events in the regulatory insertion (RI) element of the protein. Manipulating these posttranslational modifications (PTMs) prevented the maturation of wild-type CFTR and instead induced its degradation by ER quality control systems. Deletion of Phe
    MeSH term(s) Amino Acid Sequence ; Base Sequence ; Cell Line ; Cystic Fibrosis/genetics ; Cystic Fibrosis/metabolism ; Cystic Fibrosis Transmembrane Conductance Regulator/chemistry ; Cystic Fibrosis Transmembrane Conductance Regulator/genetics ; Cystic Fibrosis Transmembrane Conductance Regulator/metabolism ; Endoplasmic Reticulum/metabolism ; Humans ; Mutation ; Phosphorylation ; Protein Folding ; Protein Processing, Post-Translational ; Sequence Deletion ; Sequence Homology, Amino Acid ; Sequence Homology, Nucleic Acid
    Chemical Substances cystic fibrosis transmembrane conductance regulator delta F508 ; Cystic Fibrosis Transmembrane Conductance Regulator (126880-72-6)
    Language English
    Publishing date 2019-01-01
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 2417226-1
    ISSN 1937-9145 ; 1945-0877
    ISSN (online) 1937-9145
    ISSN 1945-0877
    DOI 10.1126/scisignal.aan7984
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article: The Host Interactome of Spike Expands the Tropism of SARS-CoV-2.

    Bamberger, Casimir / Pankow, Sandra / Martínez-Bartolomé, Salvador / Diedrich, Jolene / Park, Robin / Yates, John

    bioRxiv : the preprint server for biology

    2021  

    Abstract: The SARS-CoV-2 virus causes severe acute respiratory syndrome (COVID-19) and has rapidly created a global pandemic. Patients that survive may face a slow recovery with long lasting side effects that can afflict different organs. SARS-CoV-2 primarily ... ...

    Abstract The SARS-CoV-2 virus causes severe acute respiratory syndrome (COVID-19) and has rapidly created a global pandemic. Patients that survive may face a slow recovery with long lasting side effects that can afflict different organs. SARS-CoV-2 primarily infects epithelial airway cells that express the host entry receptor Angiotensin Converting Enzyme 2 (ACE2) which binds to spike protein trimers on the surface of SARS-CoV-2 virions. However, SARS-CoV-2 can spread to other tissues even though they are negative for ACE2. To gain insight into the molecular constituents that might influence SARS-CoV-2 tropism, we determined which additional host factors engage with the viral spike protein in disease-relevant human bronchial epithelial cells (16HBEo
    Language English
    Publishing date 2021-02-16
    Publishing country United States
    Document type Preprint
    DOI 10.1101/2021.02.16.431318
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top