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Wyniki wyszukiwania dla: j-domain proteins
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Wyniki wyszukiwania dla: j-domain proteins

  • Structure and evolution of the 4-helix bundle domain of Zuotin, a J-domain protein co-chaperone of Hsp70

    Publikacja
    • O. Shrestha
    • R. Sharma
    • B. Tomiczek
    • W. Lee
    • M. Tonelli
    • G. Cornilescu
    • M. Stolarska
    • Ł. Nierzwicki
    • J. Czub
    • J. Markley... i 3 innych

    - PLOS ONE - Rok 2019

    The J-domain protein Zuotin is a multi-domain eukaryotic Hsp70 co-chaperone. Though it is primarily ribosome-associated, positioned at the exit of the 60S subunit tunnel where it promotes folding of nascent polypeptide chains, Zuotin also has off-ribosome functions. Domains of Zuotin needed for 60S association and interaction with Hsp70 are conserved in eukaryotes. However, whether the 4-helix bundle (4HB) domain is conserved remains...

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  • Two-step mechanism of J-domain action in driving Hsp70 function

    Publikacja
    • B. Tomiczek
    • W. Delewski
    • Ł. Nierzwicki
    • M. Stolarska
    • I. Grochowina
    • B. Schilke
    • R. Dutkiewicz
    • M. A. Uzarska
    • S. Ciesielski
    • J. Czub... i 2 innych

    - PLoS Computational Biology - Rok 2020

    J-domain proteins (JDPs), obligatory Hsp70 cochaperones, play critical roles in protein homeostasis. They promote key allosteric transitions that stabilize Hsp70 interaction with substrate polypeptides upon hydrolysis of its bound ATP. Although a recent crystal structure revealed the physical mode of interaction between a J-domain and an Hsp70, the structural and dynamic consequences of J-domain action once bound and how Hsp70s...

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  • A J-lossless coprime factorisation approach to H control in delta domain

    Publikacja

    - AUTOMATICA - Rok 2002

    Praca dotyczy sterowania wielowymiarowym obiektem dynamicznym czasu ciągłego opisanym dyskretnoczasowym modelem w przestrzeni stanu, przy założeniu, że wskaźnik jakości sterowania oparty jest na normie H-inf. Odpowiednie zadanie optymalizacji tego wskaźnika rozwiązuje się, stosując tak zwaną względnie pierwszą J-bezstratną faktoryzację modelu sterowanego. Pokazano, że synteza optymalnego sterownika, wymagająca rozwiązania dwóch...

  • Analysis of Reconstituted Tripartite Complex Supports Avidity-based Recruitment of Hsp70 by Substrate Bound J-domain Protein

    Publikacja
    • M. Jelen
    • I. Grochowina
    • A. Grabinska-Rogala
    • S. Ciesielski
    • K. Dabrowska
    • B. Tomiczek
    • Ł. Nierzwicki
    • W. Delewski
    • B. Schilke
    • J. Czub... i 4 innych

    - JOURNAL OF MOLECULAR BIOLOGY - Rok 2023

    Hsp70 are ubiquitous, versatile molecular chaperones that cyclically interact with substrate protein(s). The initial step requires synergistic interaction of a substrate and a J-domain protein (JDP) cochaperone, via its J-domain, with Hsp70 to stimulate hydrolysis of its bound ATP. This hydrolysis drives conformational changes in Hsp70 that stabilize substrate binding. However, because of the transient nature of substrate and JDP...

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  • Modeling SARS‐CoV‐2 proteins in the CASP‐commons experiment

    Publikacja
    • A. Kryshtafovych
    • J. Moult
    • W. M. Billings
    • D. Della Corte
    • K. Fidelis
    • S. Kwon
    • K. Olechnovič
    • C. Seok
    • Č. Venclovas
    • J. Won... i 79 innych

    - PROTEINS-STRUCTURE FUNCTION AND BIOINFORMATICS - Rok 2021

    Critical Assessment of Structure Prediction (CASP) is an organization aimed at advancing the state of the art in computing protein structure from sequence. In the spring of 2020, CASP launched a community project to compute the structures of the most structurally challenging proteins coded for in the SARS-CoV-2 genome. Forty-seven research groups submitted over 3000 three-dimensional models and 700 sets of accuracy estimates on...

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  • A reliable synthesis of discrete-time H-inf control. Part I: basic theorems and J-lossless conjugators

    Publikacja

    The paper gives a basis for solving many problems of numerically reliable synthesis of sub-optimal discrete-time control in H-inf. The approach is based on J-lossless factorisation of the delta-domain chain-scattering description of continuous-time plants being controlled. Relevant properties of poles and zeroes of chain-scattering models are given. Necessary and sufficient conditions for the existence of stabilising J-lossless...

  • Defining a novel domain that provides an essential contribution to site-specific interaction of Rep protein with DNA

    Publikacja
    • K. Wegrzyn
    • E. Zabrocka
    • K. Bury
    • B. Tomiczek
    • M. Wieczór
    • J. Czub
    • U. Uciechowska
    • M. Moreno-del Alamo
    • U. Walkow
    • I. Grochowina... i 4 innych

    - NUCLEIC ACIDS RESEARCH - Rok 2021

    An essential feature of replication initiation proteins is their ability to bind to DNA. In this work, we describe a new domain that contributes to a replication initiator sequence-specific interaction with DNA. Applying biochemical assays and structure prediction methods coupled with DNA–protein crosslinking, mass spectrometry, and construction and analysis of mutant proteins, we identified that the replication initiator of the...

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  • Kazimierz Darowicki prof. dr hab. inż.

               Studia wyższe ukończyłem w czerwcu 1981 roku po zdaniu egzaminu dyplomowego i obronie pracy magisterskiej. Opiekunem pracy magisterskiej był dr hab. inż. Tadeusz Szauer. W roku 1991, 27 listopada uzyskałem stopień naukowy broniąc pracę doktorską zatytułowaną „Symulacyjna i korelacyjna analiza widm immitancyjnych inhibitowanej reakcji elektrodowej”. Promotorem pracy był prof. dr hab. inż. Józef Kubicki (Wydział Chemiczny...

  • Recent Developments in Data-Assisted Modeling of Flexible Proteins

    Publikacja
    • C. Czaplewski
    • Z. Gong
    • E. Lubecka
    • K. Xue
    • C. Tang
    • A. Liwo

    - Frontiers in Molecular Biosciences - Rok 2021

    Many proteins can fold into well-defined conformations. However, intrinsically-disordered proteins (IDPs) do not possess a defined structure. Moreover, folded multi-domain proteins often digress into alternative conformations. Collectively, the conformational dynamics enables these proteins to fulfill specific functions. Thus, most experimental observables are averaged over the conformations that constitute an ensemble. In this...

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  • Characterization of single-stranded DNA-binding proteins from the psychrophilic bacteria

    Single-stranded DNA-binding proteins (SSBs) are indispensable elements in the cells of all living organisms. SSB proteins interact with ssDNA insequence in an independent manner, preventing them from forming secondary structures and from degradation by nucleases. In this way, SSB-binding proteins participate in all processes involving ssDNA, such as replication, repair and recombination. Although there are differences in amino...

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