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1
Crescent - Crescentin historia
Crescent - Crescentin historia
::2013/03/18::
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2
Intervista Carolina Crescentin ai Ciak d
Intervista Carolina Crescentin ai Ciak d'oro 2011
::2011/07/29::
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3
Loose Cannons trailer Alessandro Preziosi Carolina Crescentin
Loose Cannons trailer Alessandro Preziosi Carolina Crescentin
::2010/11/03::
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4
355 Atton Crescent in Evergreen
355 Atton Crescent in Evergreen
::2014/06/20::
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5
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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6
522 Kucey Crescent in the Arbor Creek area of Saskatoon
522 Kucey Crescent in the Arbor Creek area of Saskatoon
::2014/07/05::
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7
315 Atton Crescent in Evergreen, Saskatoon
315 Atton Crescent in Evergreen, Saskatoon
::2013/09/05::
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8
230 University Crescent in London Ontario - Home For Rent Near Western University and King
230 University Crescent in London Ontario - Home For Rent Near Western University and King's College
::2014/06/03::
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9
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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10
Man arrested after shots fired on Bourquin Crescent in Abbotsford
Man arrested after shots fired on Bourquin Crescent in Abbotsford
::2014/06/03::
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11
The Weir on Spadina Crescent in Saskatoon 2011
The Weir on Spadina Crescent in Saskatoon 2011
::2011/03/07::
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12
Homes For Sale in Heritage Bay, The Crescent in Bluffton, SC
Homes For Sale in Heritage Bay, The Crescent in Bluffton, SC
::2014/04/25::
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13
Find the area of the shaded crescent in GSP5
Find the area of the shaded crescent in GSP5
::2014/06/01::
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14
100 Stroud Crescent in Wasaga Beach @ $499,900
100 Stroud Crescent in Wasaga Beach @ $499,900
::2014/07/26::
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15
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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16
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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17
Team Davids of Re/Max Presents Unit 710 - 7 Gale Crescent in St. Catharines
Team Davids of Re/Max Presents Unit 710 - 7 Gale Crescent in St. Catharines
::2014/07/18::
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18
730 Comstock Crescent in Brockville
730 Comstock Crescent in Brockville
::2014/06/05::
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19
Home for Sale - 24 Whitlock Crescent in Ajax by Diane Tobia of REMAX Hallmark Brokerage
Home for Sale - 24 Whitlock Crescent in Ajax by Diane Tobia of REMAX Hallmark Brokerage
::2014/05/23::
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20
Royal Crescent in Bath
Royal Crescent in Bath
::2011/08/11::
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21
Drone Aerial Presentation: 998 Cookshire Crescent in Ottawa
Drone Aerial Presentation: 998 Cookshire Crescent in Ottawa
::2014/04/25::
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22
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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23
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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24
The Royal Crescent in Bath, England. The tiny apartments in this Edwardian era complex now sell for
The Royal Crescent in Bath, England. The tiny apartments in this Edwardian era complex now sell for
::2014/05/22::
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25
ロイヤルクレセント Royal Crescent in Bath - UK 2012
ロイヤルクレセント Royal Crescent in Bath - UK 2012
::2012/11/01::
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26
Carpet Stain Removal Crescent, IN
Carpet Stain Removal Crescent, IN
::2013/03/11::
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27
"Sunshine Crescent In My Shadow
"Sunshine Crescent In My Shadow's Eye"
::2014/05/11::
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28
Anne Fry Ormsby Crescent in The Woods Remax Excellence Edmonton
Anne Fry Ormsby Crescent in The Woods Remax Excellence Edmonton
::2014/06/17::
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29
Triest Crescent in Gordon Head, Victoria BC circa 1974
Triest Crescent in Gordon Head, Victoria BC circa 1974
::2014/04/24::
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30
Go Sightseeing The Royal Crescent in Bath for 30 sec
Go Sightseeing The Royal Crescent in Bath for 30 sec
::2014/05/08::
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31
Qatar Red Crescent in Lanao Del Sur
Qatar Red Crescent in Lanao Del Sur
::2014/07/10::
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32
Home of Rich and Famous..No.1 Wellington Crescent. in Winnipeg...The White Castle/Izzy Asper
Home of Rich and Famous..No.1 Wellington Crescent. in Winnipeg...The White Castle/Izzy Asper
::2012/06/17::
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33
Welcome to 32 Headwater Crescent in Richmond Hill, Ontario!
Welcome to 32 Headwater Crescent in Richmond Hill, Ontario!
::2014/06/04::
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34
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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35
Welcome to 713 Downview Crescent in Oshawa
Welcome to 713 Downview Crescent in Oshawa
::2014/04/11::
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36
Welcome to 49 Acre Heights Crescent in Toronto, Ontario!
Welcome to 49 Acre Heights Crescent in Toronto, Ontario!
::2014/06/04::
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37
Welcome to 35 Nectarine Crescent in Brampton, Ontario. For more info visit www.royallepagemaximum.ca
Welcome to 35 Nectarine Crescent in Brampton, Ontario. For more info visit www.royallepagemaximum.ca
::2014/05/22::
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38
1724 Missenden Crescent in Mississauga
1724 Missenden Crescent in Mississauga
::2014/03/25::
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39
923 Trotter Crescent in Mount Royal
923 Trotter Crescent in Mount Royal
::2014/08/07::
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40
Voodoo Glow Skulls - "El Coo Cooi" @ Crescent in PHX 7/19/14
Voodoo Glow Skulls - "El Coo Cooi" @ Crescent in PHX 7/19/14
::2014/07/20::
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41
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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42
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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43
How to pronounce Crescent in Japanese  三日月 みかづき ミカヅキ pronunciation Japan
How to pronounce Crescent in Japanese 三日月 みかづき ミカヅキ pronunciation Japan
::2014/04/02::
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44
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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45
Lake Crescent in Olympic National Park
Lake Crescent in Olympic National Park
::2014/06/01::
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46
Break-Ins /Robbery at homes in Floribunda Crescent in Brampton, ON
Break-Ins /Robbery at homes in Floribunda Crescent in Brampton, ON
::2013/08/13::
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47
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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48
Welcome to 55 Villandry Crescent in Vaughan, Ontario. For more info visit www.royallepagemaximum.ca
Welcome to 55 Villandry Crescent in Vaughan, Ontario. For more info visit www.royallepagemaximum.ca
::2014/05/06::
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49
Mirjana
Mirjana's newest Listing~2351 Brockberry Crescent in Oakville
::2014/04/17::
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50
The Circus and The Royal Crescent in Bath
The Circus and The Royal Crescent in Bath
::2012/10/01::
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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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