3bn4

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{{STRUCTURE_3bn4| PDB=3bn4 | SCENE= }}
{{STRUCTURE_3bn4| PDB=3bn4 | SCENE= }}
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'''Carboxysome Subunit, CcmK1'''
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===Carboxysome Subunit, CcmK1===
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==Overview==
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The carboxysome is a bacterial microcompartment that functions as a simple organelle by sequestering enzymes involved in carbon fixation. The carboxysome shell is roughly 800 to 1400 angstroms in diameter and is assembled from several thousand protein subunits. Previous studies have revealed the three-dimensional structures of hexameric carboxysome shell proteins, which self-assemble into molecular layers that most likely constitute the facets of the polyhedral shell. Here, we report the three-dimensional structures of two proteins of previously unknown function, CcmL and OrfA (or CsoS4A), from the two known classes of carboxysomes, at resolutions of 2.4 and 2.15 angstroms. Both proteins assemble to form pentameric structures whose size and shape are compatible with formation of vertices in an icosahedral shell. Combining these pentamers with the hexamers previously elucidated gives two plausible, preliminary atomic models for the carboxysome shell.
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(as it appears on PubMed at http://www.pubmed.gov), where 18292340 is the PubMed ID number.
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{{ABSTRACT_PUBMED_18292340}}
==About this Structure==
==About this Structure==
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[[Category: Hexamer]]
[[Category: Hexamer]]
[[Category: Structural protein]]
[[Category: Structural protein]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 20:55:28 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 22:46:04 2008''

Revision as of 19:46, 28 July 2008

Image:3bn4.png

Template:STRUCTURE 3bn4

Carboxysome Subunit, CcmK1

Template:ABSTRACT PUBMED 18292340

About this Structure

3BN4 is a Single protein structure of sequence from Synechocystis sp.. Full crystallographic information is available from OCA.

Reference

Atomic-level models of the bacterial carboxysome shell., Tanaka S, Kerfeld CA, Sawaya MR, Cai F, Heinhorst S, Cannon GC, Yeates TO, Science. 2008 Feb 22;319(5866):1083-6. PMID:18292340

Page seeded by OCA on Mon Jul 28 22:46:04 2008

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