Search results

1

The occurrence and seasonal distribution of C_50-C_60-polyprenols and of C_100- and similar long-chain polyprenols in leaves of plants

100%

Chojnacki T., Vogtman T.

Acta Biochimica Polonica

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1984

|

vol. 31

|

issue 1

115-126

2

Effect of ethionine on dolichyl phosphate-dependent transglycosylation reactions in rat liver

81%

Tosheva-Tounova R., Krajewska-Rychlik I., Chojnacki T.

Acta Biochimica Polonica

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1984

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vol. 31

|

issue 1

127-137

3

Dolichols and enzymatic formation of dolichyl phosphate sugars in the thymus of mice on neoplastic transformation

81%

Szkopińska A., Palamarczyk G., Chojnacki T.

|

vol. 32

|

issue 1

63-70

4

Acyl esters of polyprenols: Specifity of microsomal transacylase for polyprenols of different chain length and saturation

81%

Radomińska-Pyrek A., Chojnacki T., Zulczyk W.

Acta Biochimica Polonica

|

1979

|

vol. 26

|

issue 1-2

125-134

5

The diversity of polyprenol pattern in leaves of fruit trees belonging to Rosaceae and Cornaceae

81%

Wanke M., Chojnacki T., Świeżewska E.

Acta Biochimica Polonica

|

1998

|

vol. 45

|

issue 3

811-818

6

On the specific pattern of long chain polyprenols in green needles of Pinus mugo Turra

72%

Kazimierczak B., Hertel J., Świeżewska E., Chojnacki T., Marczewski A.

Acta Biochimica Polonica

|

1997

|

vol. 44

|

issue 4

803-808

7

Dolichyl sulphate and H-phosphonate: Enzymatic reactions with activated sugars

72%

Sizova O. V., Maltsev S. D., Shibaev V. N., Jankowski W. J., Chojnacki T.

Acta Biochimica Polonica

|

1998

|

vol. 45

|

issue 4

1021-1030

8

Search for polyprenols in leaves of evergreen and deciduous Ericaceae plants.

72%

Ranjan R., Marczewski A., Chojnacki T., Hertel J., Swiezewska E.

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2001

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vol. 48

|

issue 2

579-584

EN

Various species and cultivars of Ericaceae family were checked for the presence of long-chain polyprenols in their leaves. In the genus Rhododendron no polyprenols were found in the ever-green species, while they were present in the deciduous type. The polyprenols were of chain-length of 14-20 isoprene residues and they occurred in the form of acetic acid esters. The polyprenol accumulation is discussed with respect to senescence of leaves.

9

The occurrence of long-chain polyprenols in leaves of plants of Combretaceae fami1y

72%

Kulcitsky V., Hertel J., Skoczylas E., Świeżewska E., Chojnacki T.

Acta Biochimica Polonica

|

1996

|

vol. 43

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issue 4

707-711

10

The occurrence of unique, long-chain polyprenols in the leaves of Potentilla species

70%

Świeżewska E., Chojnacki T.

Acta Biochimica Polonica

|

1989

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vol. 36

|

issue 2

143-158

11

Long chain polyisoprenoid alcohols in leaves of Capparis species

70%

Jankowski W. J., Chojnacki T.

Acta Biochimica Polonica

|

1991

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vol. 38

|

issue 2

265-275

12

Prenyl sulfates as alkylating reagents for mercapto amino acids

62%

Maltsev S., Sizova O., Utkina N., Shibaev V., Chojnacki T., Jankowski W., Swiezewska E.

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2008

|

vol. 55

|

issue 4

807-813

EN

A new methodology for prenylation of thiol compounds has been developed. The approach is based on the use of prenyl sulfates as new reagents for S-prenylation of benzenethiol and cysteamine in aqueous systems. The C10-prenols geraniol and nerol that differ in the configuration (E or Z, correspondingly) of the α-isoprene unit were efficiently O-sulfated in the presence of a pyridine-SO3' complex. The obtained geranyl and neryl sulfates were tested as alkylating agents. These compounds were chosen to reveal the influence of the α-isoprene unit configuration on their alkylation (prenylation) ability. S-Geranyl cysteine was prepared to demonstrate the applicability of this method for prenylation of peptides containing mercapto amino acids.

13

The search for polyprenols in dendroflora of Vietnam

62%

Marczewski A., Ciepichal E., Canh L. X., Bach T. T., Swiezewska E., Chojnacki T.

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2007

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vol. 54

|

issue 4

727-732

EN

The occurrence of polyprenols in leaves of over 340 species of dendroflora in natural habitats in the regions of Hanoi and Hue in Vietnam was studied. Plant material was collected in the late autumn (October/November) during the end of a vegetation season. Leaves of about 200 plant species did not contain detectable amounts of polyprenols in contrast to few systematic families, e.g. Moraceae, Euphorbiaceae, where polyprenols were highly abundant and their pattern could be used as a chemotaxonomic criterion. Most often dominating polyprenols were prenol-11 and prenol-12. In several angiosperm species prenol-13 and detectable amounts of prenol-14 were also found. The incidence of prenol-13 and -14 was not restricted to a specific taxonomic group since species exhibiting domination of such longer chain polyprenols belonged to various systematic families. In some plants (e.g. Ceiba pentandra) α-cis polyprenols were accompanied by α-trans counterparts. This report describes several new plant species that may serve as natural sources of long chain polyprenols.

14

The effect of undecaprenol on bilayer lipid membranes

61%

Janas T., Chojnacki T., Świeżewska E., Janas T.

Acta Biochimica Polonica

|

1994

|

vol. 41

|

issue 3

351-358

15

Dolichols of the fern Matteucia struthiopteris.

52%

Wojtas M., Bieńkowski T., Zelman-Femiak M., Tateyama S., Sagami H., Chojnacki T., Danikiewicz W., Swiezewska E.

|

2005

|

vol. 52

|

issue 1

255-259

EN

Dolichols isolated from leaves of the fern Matteucia struthiopteris were present as a mixture of prenologues composed of 14 up to 20 isoprene units with Dol-16 dominating. They comprised approximately 0.004% of the fresh weight of fresh plant tissue and were accompanied by traces of polyprenols (Pren-14 up to Pren-17, Pren-16 dominating). Their structure was confirmed by electropray ionization mass spectrometry (ESI-MS). This is the first time that dolichols have been reported as dominating polyisoprenoid alcohols in plant photosynthetic tissue.

16

Light conditions alter accumulation of long chain polyprenols in leaves of trees and shrubs throughout the vegetation season.

52%

Bajda A., Chojnacki T., Hertel J., Swiezewska E., Wójcik J., Kaczkowska A., Marczewski A., Bojarczuk T., Karolewski P., Oleksyn J.

|

2005

|

vol. 52

|

issue 1

233-241

EN

In many plants belonging to angiosperms and gymnosperms the accumulation in leaves of long chain polyprenols and polyprenyl esters during growth in natural habitats depends on the light intensity. The amount of polyprenols in leaves is also positively correlated with the thickness of the leaf blade (SLA, specific leaf area). The polyprenol content of leaves shows seasonal changes with a maximum in autumn and a minimum in early summer with the difference between poorly and well illuminated plants persisting throughout the vegetation season.

17

The search for plant polyprenols

52%

Świeżewska E., Sasak W., Mańkowski T., Jankowski W., Vogtman T., Krajewska I., Hertel J., Skoczylas E., Chojnacki T.

Acta Biochimica Polonica

|

1994

|

vol. 41

|

issue 3

221-260

18

Polyprenols in leaves of fruit-trees of Rosaceae fami1y

51%

Świeżewska E., Chojnacki T.

Acta Biochimica Polonica

|

1996

|

vol. 43

|

issue 4

701-706

19

Long-chain polyprenols in gymno-sperm plants

50%

Świeżewska E., Chojnacki T.

Acta Biochimica Polonica

|

1988

|

vol. 35

|

issue 2

131-147

20

New cationic polyprenyl derivative proposed as a lipofecting agent

43%

Madeja Z., Rak M., Wybieralska E., Różański I., Masnyk M., Chmielewski M., Łysek R., Chojnacki T., Jankowski W., Ciepichal E., Swiezewska E., Tekle M., Dallner G.

|

2007

|

vol. 54

|

issue 4

873-876

EN

Cationic linear poly-cis-isoprenoid prepared from natural plant polyprenol in a mixture with dioleyl phosphatidylethanolamine was found to be an effective lipofection agent for eukaryotic cells. The transfecting activity is related to the poly-cis structure of the polyprenyl chain.

Refine search results

The occurrence and seasonal distribution of C_50-C_60-polyprenols and of C_100- and similar long-chain polyprenols in leaves of plants

Effect of ethionine on dolichyl phosphate-dependent transglycosylation reactions in rat liver

Dolichols and enzymatic formation of dolichyl phosphate sugars in the thymus of mice on neoplastic transformation

Acyl esters of polyprenols: Specifity of microsomal transacylase for polyprenols of different chain length and saturation

The diversity of polyprenol pattern in leaves of fruit trees belonging to Rosaceae and Cornaceae

On the specific pattern of long chain polyprenols in green needles of Pinus mugo Turra

Dolichyl sulphate and H-phosphonate: Enzymatic reactions with activated sugars

Search for polyprenols in leaves of evergreen and deciduous Ericaceae plants.

The occurrence of long-chain polyprenols in leaves of plants of Combretaceae fami1y

The occurrence of unique, long-chain polyprenols in the leaves of Potentilla species

Long chain polyisoprenoid alcohols in leaves of Capparis species

Prenyl sulfates as alkylating reagents for mercapto amino acids

The search for polyprenols in dendroflora of Vietnam

The effect of undecaprenol on bilayer lipid membranes

Dolichols of the fern Matteucia struthiopteris.

Light conditions alter accumulation of long chain polyprenols in leaves of trees and shrubs throughout the vegetation season.

The search for plant polyprenols

Polyprenols in leaves of fruit-trees of Rosaceae fami1y

Long-chain polyprenols in gymno-sperm plants

New cationic polyprenyl derivative proposed as a lipofecting agent