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1
Loose Cannons trailer Alessandro Preziosi Carolina Crescentin
Loose Cannons trailer Alessandro Preziosi Carolina Crescentin
::2010/11/03::
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2
Crescent - Crescentin historia
Crescent - Crescentin historia
::2013/03/18::
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3
Intervista Carolina Crescentin ai Ciak d
Intervista Carolina Crescentin ai Ciak d'oro 2011
::2011/07/29::
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4
21-110 Banyan Crescent in Briarwood, Saskatoon
21-110 Banyan Crescent in Briarwood, Saskatoon
::2013/09/25::
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5
314 Pichler Crescent in Rosewood, Saskatoon
314 Pichler Crescent in Rosewood, Saskatoon
::2013/08/28::
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6
Saskatoon Homes for Sale - 110 Mahabir Crescent in Evergreen
Saskatoon Homes for Sale - 110 Mahabir Crescent in Evergreen
::2013/08/13::
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7
How to Draw a Crescent in Photoshop : Photoshop Tutorials
How to Draw a Crescent in Photoshop : Photoshop Tutorials
::2012/11/07::
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8
202 Fleming Crescent in Willowgrove
202 Fleming Crescent in Willowgrove
::2014/04/12::
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9
The Crescent in Minami-Hakone I クレセントハウス 南箱根ダイヤランド
The Crescent in Minami-Hakone I クレセントハウス 南箱根ダイヤランド
::2012/05/14::
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10
Project Crescent in SQL Server Code Name "Denali" CTP3: Getting Started
Project Crescent in SQL Server Code Name "Denali" CTP3: Getting Started'
::2011/08/04::
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11
Welcome to 713 Downview Crescent in Oshawa
Welcome to 713 Downview Crescent in Oshawa
::2014/04/11::
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12
355 Atton Crescent in Evergreen, Saskatoon
355 Atton Crescent in Evergreen, Saskatoon
::2014/04/03::
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13
Will dances popping in front of Royal Crescent in Bath
Will dances popping in front of Royal Crescent in Bath
::2014/04/13::
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14
Kingston apartments for rent, 1020 Pembridge Crescent, in Kingston, Ontario.   Realstar Management
Kingston apartments for rent, 1020 Pembridge Crescent, in Kingston, Ontario. Realstar Management
::2013/09/12::
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15
Amtrak 20 Crescent in Gainesville, GA w/ 66 Heritage Unit Leading!
Amtrak 20 Crescent in Gainesville, GA w/ 66 Heritage Unit Leading!
::2013/01/14::
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16
315 Atton Crescent in Evergreen, Saskatoon
315 Atton Crescent in Evergreen, Saskatoon
::2013/09/05::
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17
Ivan Kosyakov - Crescent in Denali CTP3 - Tailspin Sales.wmv
Ivan Kosyakov - Crescent in Denali CTP3 - Tailspin Sales.wmv
::2011/10/06::
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18
Portstewart Crescent in the sea!
Portstewart Crescent in the sea!
::2013/12/05::
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19
Cedarwoods Tower at 1 Cedarwoods Crescent in Kitchener, Ontario.   Realstar Management
Cedarwoods Tower at 1 Cedarwoods Crescent in Kitchener, Ontario. Realstar Management
::2014/03/14::
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20
Red Cross Red Crescent in Afghanistan
Red Cross Red Crescent in Afghanistan
::2008/05/05::
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21
La Poel, Lake Crescent in Olympic National Park
La Poel, Lake Crescent in Olympic National Park
::2013/12/01::
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22
The Joint - Safety In Numbers (live at The Crescent in Salford)
The Joint - Safety In Numbers (live at The Crescent in Salford)
::2013/12/20::
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23
DON VLOG 27/05/12: Akira The Don & Wade Crescent in LA!
DON VLOG 27/05/12: Akira The Don & Wade Crescent in LA!
::2012/05/28::
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24
Eastern Crescent in the eyes of MS TEESTA SETALVAD
Eastern Crescent in the eyes of MS TEESTA SETALVAD
::2013/11/19::
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25
Christmas lights at 11 Wanda Crescent in Rothesay, NB - 2012
Christmas lights at 11 Wanda Crescent in Rothesay, NB - 2012
::2012/12/25::
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26
The Crescent In Your Pocket
The Crescent In Your Pocket
::2013/08/31::
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27
The Circus and The Royal Crescent in Bath
The Circus and The Royal Crescent in Bath
::2012/10/01::
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28
TG 030412 Crescent, in arrivo i grandi marchi dell
TG 030412 Crescent, in arrivo i grandi marchi dell'alta moda
::2012/04/03::
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29
Christmas lights at 11 Wanda Crescent in Rothesay, NB
Christmas lights at 11 Wanda Crescent in Rothesay, NB
::2011/12/25::
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30
Collingwood Model House For Sale 7 Chamberlain Crescent in Creekside $399,900
Collingwood Model House For Sale 7 Chamberlain Crescent in Creekside $399,900
::2013/11/01::
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31
A mass funeral for a doctor in the Syrian Red Crescent in Douma. Sunday, April29, 2012
A mass funeral for a doctor in the Syrian Red Crescent in Douma. Sunday, April29, 2012
::2012/04/29::
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32
Villa With 3 Bedrooms at the Crescent in Bluffton SC, $299,000.
Villa With 3 Bedrooms at the Crescent in Bluffton SC, $299,000.
::2013/08/11::
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33
Team Davids of Re/Max Presents 118 Westchester Crescent in St. Catharines
Team Davids of Re/Max Presents 118 Westchester Crescent in St. Catharines
::2014/02/24::
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34
1724 Missenden Crescent in Mississauga
1724 Missenden Crescent in Mississauga
::2014/03/25::
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35
123 Fleming Crescent in Saskatoon - A must see!
123 Fleming Crescent in Saskatoon - A must see!
::2013/11/21::
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36
Circus & The Royal Crescent in Bath, England
Circus & The Royal Crescent in Bath, England
::2011/09/26::
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37
SOLD!!! Welcome Home to 87 Dewell Crescent in Courtice!
SOLD!!! Welcome Home to 87 Dewell Crescent in Courtice!
::2013/10/12::
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38
Break-Ins /Robbery at homes in Floribunda Crescent in Brampton, ON
Break-Ins /Robbery at homes in Floribunda Crescent in Brampton, ON
::2013/08/14::
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39
Welcome to 8285 Mundare Crescent in Niagara Falls - Asking $174,900
Welcome to 8285 Mundare Crescent in Niagara Falls - Asking $174,900
::2014/03/21::
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40
453 Avon Crescent, in South-East Oakville
453 Avon Crescent, in South-East Oakville
::2013/04/30::
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41
View of Lake Crescent in Olympic National Park
View of Lake Crescent in Olympic National Park
::2012/10/13::
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42
3632 Seaview Crescent in Saltair, BC near Ladysmith
3632 Seaview Crescent in Saltair, BC near Ladysmith
::2012/06/20::
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43
Tanya Rankin
Tanya Rankin's Virtual Tour of 385 Crosina Crescent in Westridge Estates
::2013/04/14::
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44
Lovely 2 Storey home for sale at 76 Norris Crescent in St.Albert
Lovely 2 Storey home for sale at 76 Norris Crescent in St.Albert
::2013/02/21::
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45
33 Greenore Crescent in Acton Ontario
33 Greenore Crescent in Acton Ontario
::2013/09/08::
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46
Final Tour of Rehabbed Lawrence Crescent in Flossmoor
Final Tour of Rehabbed Lawrence Crescent in Flossmoor
::2012/09/28::
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47
Red Cross Red Crescent in Pakistan
Red Cross Red Crescent in Pakistan
::2008/05/01::
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48
Carpet Stain Removal Crescent, IN
Carpet Stain Removal Crescent, IN
::2013/03/11::
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49
Funeral of Muhammad Khdraa, the volunteer in Red Crescent , in Duma city on 29-4-2012
Funeral of Muhammad Khdraa, the volunteer in Red Crescent , in Duma city on 29-4-2012
::2012/08/04::
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50
5806 Page Crescent in Burlington by Sean Kavanagh
5806 Page Crescent in Burlington by Sean Kavanagh
::2012/06/07::
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RESULTS [51 .. 101]
From Wikipedia, the free encyclopedia
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Crescentin is a protein which is a bacterial relative of the intermediate filaments found in eukaryotic cells. Just as tubulins and actins, the other major cytoskeletal proteins, have prokaryotic homologs in, respectively, the FtsZ and MreB proteins, intermediate filaments are linked to the crescentin protein.

Role in cell shape[edit]

Crescentin was recently discovered in the prokaryote Caulobacter crescentus, an aquatic bacterium which uses its crescent-shaped cells for enhanced motility.[1] The crescentin protein is located on the concave face of these cells and appears to be necessary for their shape, as mutants lacking the protein form rod-shaped cells.[2] To influence the shape of the Caulobacter cells, the helices of crescentin filaments associate with the cytoplasmic side of the cell membrane on one lateral side of the cell. This induces a curved cell shape in younger cells, which are shorter than the helical pitch of crescentin, but induces a spiral shape in older, longer cells.[3]

Protein structure[edit]

Like eukaryotic intermediate filaments, crescentin organizes into filaments and is present in a helical structure in the cell. Crescentin is necessary for both shapes of the Caulobacter prokaryote (vibroid/crescent-shape and helical shape, which it may adopt after a long stationary phase). The crescentin protein has 430 residues; its sequence mostly consists of a pattern of 7 repeated residues which form a coiled-coil structure. The DNA sequence of the protein has sections very similar to the eukaryotic keratin and lamin proteins, mostly involving the coiled-coil structure. Researchers Ausmees et al. recently proved that, like animal intermediate filament proteins, crescentin has a central rod made up of four coiled-coil segments.[4] Both intermediate filament and crescentin proteins have a primary sequence including four α-helical segments along with non-α-helical linker domains. An important difference between crescentin and animal intermediate filament proteins is that crescentin lacks certain consensus sequence elements at the ends of the rod domain which are conserved in animal lamin and keratin proteins.[5]

Assembly of filaments[edit]

Eukaryotic intermediate filament proteins assemble into filaments of 8-15 nm within the cell without the need for energy input, that is, no need for ATP or GTP. Ausmees et al. continued their crescentin research by testing whether the protein could assemble into filaments in this manner in vitro. They found that crescentin proteins were indeed able to form filaments about 10 nm wide, and that some of these filaments organized laterally into bundles, just as eukaryotic intermediate filaments do.[4] The similarity of crescentin protein to intermediate filament proteins suggests an evolutionary linkage between these two cytoskeletal proteins.

References[edit]

  1. ^ Biosciences, Eurekah.com, 2000-2005. Accessed 19 February. 2006 through PubMed.
  2. ^ Møller-Jensen J, Löwe J (February 2005). "Increasing complexity of the bacterial cytoskeleton". Curr. Opin. Cell Biol. 17 (1): 75–81. doi:10.1016/j.ceb.2004.11.002. PMID 15661522. 
  3. ^ Margolin W (March 2004). "Bacterial shape: concave coiled coils curve caulobacter". Curr. Biol. 14 (6): R242–4. doi:10.1016/j.cub.2004.02.057. PMID 15043836. 
  4. ^ a b Ausmees N, Kuhn JR, Jacobs-Wagner C (December 2003). "The bacterial cytoskeleton: an intermediate filament-like function in cell shape". Cell 115 (6): 705–13. doi:10.1016/S0092-8674(03)00935-8. PMID 14675535. 
  5. ^ Herrmann H, Aebi U (2004). "Intermediate filaments: molecular structure, assembly mechanism, and integration into functionally distinct intracellular Scaffolds". Annu. Rev. Biochem. 73: 749–89. doi:10.1146/annurev.biochem.73.011303.073823. PMID 15189158. 
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