Regulatory interaction of the Ga protein with phospholipase A2 in the plasma membrane of Eschscholzia californica (Record no. 44079)

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control field MX-MdCICY
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control field 20250625140620.0
040 ## - CATALOGING SOURCE
Transcribing agency CICY
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Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) B-9833
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245 10 - TITLE STATEMENT
Title Regulatory interaction of the Ga protein with phospholipase A2 in the plasma membrane of Eschscholzia californica
490 0# - SERIES STATEMENT
Volume/sequential designation The Plant Journal, 52(6), p.1041-1051, 2007
520 3# - SUMMARY, ETC.
Summary, etc. Plant heterotrimeric G-proteins are involved in a variety of signaling pathways, though only one a and a few bc isoforms of their subunits exist. In isolated plasma membranes of California poppy (Eschscholzia californica), the plant-specific Ga subunit was isolated and identified immunologically and by homology of the cloned gene with that of several plants. In the same membrane, phospholipase A2 (PLA2)was activated by yeast elicitor only if GTPcS (an activator of Ga)was present. From the cholate-solubilized membrane proteins, PLA2 was co-precipitated together with Ga by a polyclonal antiserum raised against the recombinant Ga. In this immunoprecipitate and in the plasma membrane (but not in the Ga-free supernatant)PLA2 was stimulated by GTPcS. Plasma membranes and immunoprecipitates obtained from antisense transformants with a low Ga content allowed no such stimulation. An antiserum raised against the C-terminus (which in animal Gas is located near the target coupling site)precipitated Ga without any PLA2 activity. Using non-denaturing PAGE, complexes of solubilized plasma membrane proteins were visualized that contained Ga plus PLA2 activity and dissociated at pH 9.5. At this pH, PLA2 was no longer stimulated by GTPcS. It is concluded that a distinct fraction of the plasma membrane-bound PLA2 exists in a detergent-resistant complex with Ga that can be dissociated at pH 9.5. This complex allows the Ga-mediated activation of PLA2.
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element PLANT G(ALPHA)PROTEIN
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element PHOSPHOLIPASE A2
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element PLANT SIGNAL TRANSFER
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element MEMBRANE PROTEIN COMPLEXES
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element PLASMA MEMBRANE PROTEINS
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Heinze, M.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Steighardt, J.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Gesell, A.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Schwartze, W.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Roos, W.
856 40 - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier <a href="https://drive.google.com/file/d/1mcsH5kES-DcIjOmuFr6xALrTR1Rwpg44/view?usp=drivesdk">https://drive.google.com/file/d/1mcsH5kES-DcIjOmuFr6xALrTR1Rwpg44/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-9833 25.06.2025 25.06.2025 Documentos solicitados