A Modified Method for Quantification of Cytokinin-Receptor Binding Using Isolated Plant Microsomes Enriched with Cognate Transmembrane Receptors (Record no. 54052)

MARC details
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control field MX-MdCICY
005 - DATE AND TIME OF LATEST TRANSACTION
control field 20250625162439.0
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Transcribing agency CICY
090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN)
Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) B-19947
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Title A Modified Method for Quantification of Cytokinin-Receptor Binding Using Isolated Plant Microsomes Enriched with Cognate Transmembrane Receptors
490 0# - SERIES STATEMENT
Volume/sequential designation Russian Journal of Plant Physiology, 69(6), p.1-9, 2022
520 3# - SUMMARY, ETC.
Summary, etc. Cytokinin receptors are key proteins that trigger signaling of cognate classical phytohormones possessing a broad-spectrum biological action. Previously, we developed two test systems to analyze the ligand-binding properties of cytokinin receptors: a heterologous binding assay based on transformed bacteria E. coli, and, later, a more appropriate homologous assay based on microsomes from transiently transformed tobacco (Nicotiana benthamiana Domin.)leaves. In both cases, a genetic construct encoding one or another cytokinin receptor under study, was ectopically expressed. In the present work, we provide a versatile experimental validation for the homologous method and propose a modified (simplified)protocol for obtaining plant microsomes carrying transmembrane proteins to be studied, namely cytokinin receptors. In contrast to the original method, the simplified procedure makes it possible to avoid ultracentrifugation and to save reagents and time when obtaining a microsomal fraction. The microsomes isolated by the modified method were comparable in quantity and quality to a similar fraction obtained in a standard way, in both cases cytokinin specific binding by endogenous receptors was close to zero. Whichever way the microsomes were originally obtained (using an ultra- or preparative centrifuge), they precipitated equally well when subsequently centrifuged at 16?000 g in a benchtop microcentrifuge. All the experimental series allowed us to recommend a wide use of this plant-based binding method, in particular its simplified version, in studies of membrane-bound phytohormone receptors.
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element NICOTIANA BENTHAMIANA
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element AGROBACTERIUM TUMEFACIENS
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element CYTOKININS
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element RECEPTORS
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element MICROSOMES
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element MEMBRANE FRACTION
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element PLANT-BASED BINDING ASSAY
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Savelieva, E. M.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Lomin, S. N.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Romanov, G. A.
856 40 - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier <a href="https://drive.google.com/file/d/1zz8591dUiPOBasAA554z6_Pzp5LhuEQv/view?usp=drivesdk">https://drive.google.com/file/d/1zz8591dUiPOBasAA554z6_Pzp5LhuEQv/view?usp=drivesdk</a>
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Source of classification or shelving scheme Clasificación local
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  Clasificación local     Ref1 CICY CICY Documento préstamo interbibliotecario 25.06.2025   B-19947 25.06.2025 25.06.2025 Documentos solicitados