Results 221 to 230 of about 258,771 (261)

D1-D2 protein degradation in the chloroplast

European Journal of Biochemistry, 1999
The D1 and D2 proteins of the photosystem II (PSII) reaction center are stable in the dark, while rapid degradation occurs in the light. Thus far, a quantitative correlation between degradation and photon fluences has not been determined. In Spirodela oligorrhiza, D1‐D2 degradation increases with photon flux.
Jansen, M.A.K., Mattoo, A.K., Edelman, M.   +2 more
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The D1 and D2 Core Proteins

2005
In 1977, Chua and Gillham (J Cell Biology 74: 441–452) reported for the first time the existence of two chloroplast-encoded proteins within the thylakoid membrane of the green alga Chlamydomonas reinhardtii, which they termed D-l and D-2. The D1 and D2 proteins are now recognized as the Photosystem II reaction center polypeptides with a key role in ...
Peter J. Nixon, Mary Sarcina, Bruce A. Diner   +2 more
openaire   +1 more source

Cyclin D1 and retinoblastoma protein expression in Kaposi's sarcoma

Journal of Cutaneous Pathology, 1997
Cyclins are implicated in the induction and control of the cell cycle. Cyclin D1 regulates G1‐phase progression by phosphorylation of the retinoblastoma protein (pRb). The Kaposi's sarcoma‐associated herpesvirus/human herpesvirus 8 (KSHV) contains and transcribes an open reading frame with sequence similarities to cellular D‐type cyclins.
M G, Horenstein, E, Cesarman, X, Wang, I, Linkov, V G, Prieto, D C, Louie   +5 more
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D1-protein dynamics in photosystem II: the lingering enigma

Photosynthesis Research, 2008
The D1/D2 heterodimer core is the heart of the photosystem II reaction center. A characteristic feature of this heterodimer is the differentially rapid, light-dependent degradation of the D1 protein. The D1 protein is possibly the most researched photosynthetic polypeptide, with aspects of structure-function, gene, messenger and protein regulation ...
Marvin, Edelman, Autar K, Mattoo
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Expression of cyclin D1 and retinoblastoma protein in colorectal cancer

European Journal of Cancer, 1998
Abnormal expression of the retinoblastoma protein (pRb) and cyclin D1 have been reported in a variety of malignancies, but the frequencies of these deregulations and their relation to prognosis in colorectal cancer has not been clarified. We characterised 90 colorectal cancers with respect to immunohistochemical expression of cyclin D1, pRb and Ki-67 ...
Palmqvist, R., Stenling, R., Öberg, Å, Landberg, G.   +3 more
openaire   +2 more sources

Protein kinase D1 inhibition interferes with mitosis progression

Journal of Cellular Physiology, 2019
AbstractProtein kinase D1 (PKD1) plays a vital role in signal transduction, cell proliferation, membrane trafficking, and cancer; however, the majority of the studies up to date had centered primarily on PKD1 functions in interphase, very little is known about its role during cell division.
Eduardo Martínez-León, Gastón Amable, Rodrigo Jácamo, María Elisa Picco, Laura Anaya, Enrique Rozengurt, Osvaldo Rey   +6 more
openaire   +3 more sources

Site-specific mutations of the N-terminal threonines in the D1 protein affects photoautotrophic growth but not D1 protein stability in Synechocystis 6803

Plant Molecular Biology, 1998
The cyanobacterium Synechocystis 6803 was engineered to produce a D1 protein where one or more of the N-terminal threonines at positions 2, 3 and 4 were replaced by other amino acid residues. No phenotypic effects were found for the T2S or T2L mutations, whereas the T2V, T2L;T4V and T2V;T3V;T4V mutations resulted in reduced photoautotrophic growth rate
G, Salih, C, Jansson
openaire   +2 more sources

Regulation of D1-protein degradation during photoinhibition of photosystem II in vivo: Phosphorylation of the D1 protein in various plant groups

Planta, 1995
Photoinhibition of PSII and turnover of the D1 reaction-centre protein in vivo were studied in pumpkin leaves (Cucurbita pepo L.) acclimated to different growth irradiances and in low-light-grown moss, (Ceratodon purpureus) (Hedw.) Brid. The low-light-acclimated pumpkins were most susceptible to photoinhibition.
Eevi Rintam�ki, Riitta Salo, Elina Lehtonen, Eva-Mari Aro   +3 more
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Role of protein kinase D1 in vasoconstriction and haemodynamics in rats

Microvascular Research
Protein kinase D (PKD), once considered an effector of protein kinase C (PKC), now plays many pathophysiological roles in various tissues. However, little is known about role of PKD in vascular function. We investigated the role of PKD in contraction of rat aorta and human aortic smooth muscle cells (HASMCs) and in haemodynamics in rats.Isometric ...
Yoh, Sugawara, Yusuke, Mizuno, Shinya, Oku, Yuri, Sawada, Takahisa, Goto   +4 more
openaire   +2 more sources

1-Butanol interferes with phospholipase D1 and protein kinase Cα association and inhibits phospholipase D1 basal activity

Biochemical and Biophysical Research Communications, 2005
1-Butanol is commonly used as a substrate for phospholipase D (PLD) activity measurement. Surprisingly we found that, in the presence of 30 mM 1-butanol (standard PLD assay conditions), PLD1 activity in COS-7 cells was lost after incubation for 2 min.
Tianhui, Hu, John H, Exton
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