Immunodetection of retinoblastoma-related protein and its phosphorylated form in interphase and mitotic alfalfa cells

Plant retinoblastoma-related (RBR) proteins are primarily considered as key regulators of G(1)/S phase transition, with functional roles in a variety of cellular events during plant growth and organ development. Polyclonal antibody against the C-terminal region of the Arabidopsis RBR1 protein also s...

Ausführliche Beschreibung

Bibliographische Detailangaben
Veröffentlicht in:Journal of experimental botany. - 1985. - 62(2011), 6 vom: 15. März, Seite 2155-68
1. Verfasser: Abrahám, Edit (VerfasserIn)
Weitere Verfasser: Miskolczi, Pál, Ayaydin, Ferhan, Yu, Ping, Kotogány, Edit, Bakó, László, Otvös, Krisztina, Horváth, Gábor V, Dudits, Dénes
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2011
Zugriff auf das übergeordnete Werk:Journal of experimental botany
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Plant Growth Regulators Plant Proteins Purines Tubulin Modulators Roscovitine 0ES1C2KQ94 Cyclin-Dependent Kinases EC 2.7.11.22 mehr... Colchicine SML2Y3J35T
LEADER 01000naa a22002652 4500
001 NLM204707447
003 DE-627
005 20231223232536.0
007 cr uuu---uuuuu
008 231223s2011 xx |||||o 00| ||eng c
024 7 |a 10.1093/jxb/erq413  |2 doi 
028 5 2 |a pubmed24n0682.xml 
035 |a (DE-627)NLM204707447 
035 |a (NLM)21196474 
040 |a DE-627  |b ger  |c DE-627  |e rakwb 
041 |a eng 
100 1 |a Abrahám, Edit  |e verfasserin  |4 aut 
245 1 0 |a Immunodetection of retinoblastoma-related protein and its phosphorylated form in interphase and mitotic alfalfa cells 
264 1 |c 2011 
336 |a Text  |b txt  |2 rdacontent 
337 |a ƒaComputermedien  |b c  |2 rdamedia 
338 |a ƒa Online-Ressource  |b cr  |2 rdacarrier 
500 |a Date Completed 15.07.2011 
500 |a Date Revised 20.10.2021 
500 |a published: Print-Electronic 
500 |a Citation Status MEDLINE 
520 |a Plant retinoblastoma-related (RBR) proteins are primarily considered as key regulators of G(1)/S phase transition, with functional roles in a variety of cellular events during plant growth and organ development. Polyclonal antibody against the C-terminal region of the Arabidopsis RBR1 protein also specifically recognizes the alfalfa 115 kDa MsRBR protein, as shown by the antigen competition assay. The MsRBR protein was detected in all cell cycle phases, with a moderate increase in samples representing G(2)/M cells. Antibody against the human phospho-pRb peptide (Ser807/811) cross-reacted with the same 115 kDa MsRBR protein and with the in vitro phosphorylated MsRBR protein C-terminal fragment. Phospho-MsRBR protein was low in G(1) cells. Its amount increased upon entry into the S phase and remained high during the G(2)/M phases. Roscovitine treatment abolished the activity of alfalfa MsCDKA1;1 and MsCDKB2;1, and the phospho-MsRBR protein level was significantly decreased in the treated cells. Colchicine block increased the detected levels of both forms of MsRBR protein. Reduced levels of the MsRBR protein in cells at stationary phase or grown in hormone-free medium can be a sign of the division-dependent presence of plant RBR proteins. Immunolocalization of the phospho-MsRBR protein indicated spots of variable number and size in the labelled interphase nuclei and high signal intensity of nuclear granules in prophase. Structures similar to phospho-MsRBR proteins cannot be recognized in later mitotic phases. Based on the presented western blot and immunolocalization data, the possible involvement of RBR proteins in G(2)/M phase regulation in plant cells is discussed 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 7 |a Plant Growth Regulators  |2 NLM 
650 7 |a Plant Proteins  |2 NLM 
650 7 |a Purines  |2 NLM 
650 7 |a Tubulin Modulators  |2 NLM 
650 7 |a Roscovitine  |2 NLM 
650 7 |a 0ES1C2KQ94  |2 NLM 
650 7 |a Cyclin-Dependent Kinases  |2 NLM 
650 7 |a EC 2.7.11.22  |2 NLM 
650 7 |a Colchicine  |2 NLM 
650 7 |a SML2Y3J35T  |2 NLM 
700 1 |a Miskolczi, Pál  |e verfasserin  |4 aut 
700 1 |a Ayaydin, Ferhan  |e verfasserin  |4 aut 
700 1 |a Yu, Ping  |e verfasserin  |4 aut 
700 1 |a Kotogány, Edit  |e verfasserin  |4 aut 
700 1 |a Bakó, László  |e verfasserin  |4 aut 
700 1 |a Otvös, Krisztina  |e verfasserin  |4 aut 
700 1 |a Horváth, Gábor V  |e verfasserin  |4 aut 
700 1 |a Dudits, Dénes  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Journal of experimental botany  |d 1985  |g 62(2011), 6 vom: 15. März, Seite 2155-68  |w (DE-627)NLM098182706  |x 1460-2431  |7 nnns 
773 1 8 |g volume:62  |g year:2011  |g number:6  |g day:15  |g month:03  |g pages:2155-68 
856 4 0 |u http://dx.doi.org/10.1093/jxb/erq413  |3 Volltext 
912 |a GBV_USEFLAG_A 
912 |a SYSFLAG_A 
912 |a GBV_NLM 
912 |a GBV_ILN_350 
951 |a AR 
952 |d 62  |j 2011  |e 6  |b 15  |c 03  |h 2155-68