1e29
From Proteopedia
(New page: 200px<br /><applet load="1e29" size="450" color="white" frame="true" align="right" spinBox="true" caption="1e29, resolution 1.21Å" /> '''PSII ASSOCIATED CYTO...) |
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| - | [[Image:1e29.gif|left|200px]]<br /><applet load="1e29" size=" | + | [[Image:1e29.gif|left|200px]]<br /><applet load="1e29" size="350" color="white" frame="true" align="right" spinBox="true" |
caption="1e29, resolution 1.21Å" /> | caption="1e29, resolution 1.21Å" /> | ||
'''PSII ASSOCIATED CYTOCHROME C549 FROM SYNECHOCYSTIS SP.'''<br /> | '''PSII ASSOCIATED CYTOCHROME C549 FROM SYNECHOCYSTIS SP.'''<br /> | ||
==Overview== | ==Overview== | ||
| - | The crystal structure of low-potential cytochrome c549, an extrinsic | + | The crystal structure of low-potential cytochrome c549, an extrinsic component of the photosystem II (PS II) from Synechocystis sp. PCC 6803, was obtained directly from single-wavelength 1.21 A resolution diffraction data. This is the first monodomain bis-histidinyl monoheme cytochrome c to be structurally characterized. The extended N-terminal region of c549 builds up a two-strand antiparallel beta-sheet in a hairpin motif, which extends through two molecules owing to crystal packing. Both peptide termini are involved in crystal contacts, which may explain their protrusion out of the globular fold. The C-terminus is preceded by a 9 A-long hydrophobic finger extending from a positively charged base and could be involved in PSII interactions, as well as a protruding negative patch built by a set of conserved acidic residues among c549 sequences. |
==About this Structure== | ==About this Structure== | ||
| - | 1E29 is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Synechocystis_sp. Synechocystis sp.] with CA and HEC as [http://en.wikipedia.org/wiki/ligands ligands]. Full crystallographic information is available from [http:// | + | 1E29 is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Synechocystis_sp. Synechocystis sp.] with <scene name='pdbligand=CA:'>CA</scene> and <scene name='pdbligand=HEC:'>HEC</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1E29 OCA]. |
==Reference== | ==Reference== | ||
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[[Category: Synechocystis sp.]] | [[Category: Synechocystis sp.]] | ||
[[Category: Coelho, R.]] | [[Category: Coelho, R.]] | ||
| - | [[Category: Enguita, F | + | [[Category: Enguita, F J.]] |
[[Category: Frazao, C.]] | [[Category: Frazao, C.]] | ||
| - | [[Category: Sheldrick, G | + | [[Category: Sheldrick, G M.]] |
[[Category: CA]] | [[Category: CA]] | ||
[[Category: HEC]] | [[Category: HEC]] | ||
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[[Category: psii modulator]] | [[Category: psii modulator]] | ||
| - | ''Page seeded by [http:// | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 12:23:01 2008'' |
Revision as of 10:23, 21 February 2008
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PSII ASSOCIATED CYTOCHROME C549 FROM SYNECHOCYSTIS SP.
Overview
The crystal structure of low-potential cytochrome c549, an extrinsic component of the photosystem II (PS II) from Synechocystis sp. PCC 6803, was obtained directly from single-wavelength 1.21 A resolution diffraction data. This is the first monodomain bis-histidinyl monoheme cytochrome c to be structurally characterized. The extended N-terminal region of c549 builds up a two-strand antiparallel beta-sheet in a hairpin motif, which extends through two molecules owing to crystal packing. Both peptide termini are involved in crystal contacts, which may explain their protrusion out of the globular fold. The C-terminus is preceded by a 9 A-long hydrophobic finger extending from a positively charged base and could be involved in PSII interactions, as well as a protruding negative patch built by a set of conserved acidic residues among c549 sequences.
About this Structure
1E29 is a Single protein structure of sequence from Synechocystis sp. with and as ligands. Full crystallographic information is available from OCA.
Reference
Crystal structure of low-potential cytochrome c549 from Synechocystis sp. PCC 6803 at 1.21 A resolution., Frazao C, Enguita FJ, Coelho R, Sheldrick GM, Navarro JA, Hervas M, De la Rosa MA, Carrondo MA, J Biol Inorg Chem. 2001 Mar;6(3):324-32. PMID:11315568
Page seeded by OCA on Thu Feb 21 12:23:01 2008
