1c51: Difference between revisions

← Older edit Newer edit →

Revision as of 11:19, 20 March 2008

File:1c51.gif

, resolution 4.0Å

Ligands:

, and

Coordinates:

save as pdb, mmCIF, xml

PHOTOSYNTHETIC REACTION CENTER AND CORE ANTENNA SYSTEM (TRIMERIC), ALPHA CARBON ONLY

OverviewOverview

An improved electron density map of photosystem I (PSI) calculated at 4-A resolution yields a more detailed structural model of the stromal subunits PsaC, PsaD, and PsaE than previously reported. The NMR structure of the subunit PsaE of PSI from Synechococcus sp. PCC7002 (Falzone, C. J., Kao, Y.-H., Zhao, J., Bryant, D. A., and Lecomte, J. T. J. (1994) Biochemistry 33, 6052-6062) has been used as a model to interpret the region of the electron density map corresponding to this subunit. The spatial orientation with respect to other subunits is described as well as the possible interactions between the stromal subunits. A first model of PsaD consisting of a four-stranded beta-sheet and an alpha-helix is suggested, indicating that this subunit partly shields PsaC from the stromal side. In addition to the improvements on the stromal subunits, the structural model of the membrane-integral region of PSI is also extended. The current electron density map allows the identification of the N and C termini of the subunits PsaA and PsaB. The 11-transmembrane alpha-helices of these subunits can now be assigned uniquely to the hydrophobic segments identified by hydrophobicity analyses.

About this StructureAbout this Structure

1C51 is a Protein complex structure of sequences from Synechococcus elongatus. Full crystallographic information is available from OCA.

ReferenceReference

Photosystem I, an improved model of the stromal subunits PsaC, PsaD, and PsaE., Klukas O, Schubert WD, Jordan P, Krauss N, Fromme P, Witt HT, Saenger W, J Biol Chem. 1999 Mar 12;274(11):7351-60. PMID:10066799

Page seeded by OCA on Thu Mar 20 10:19:53 2008

Proteopedia Page Contributors and Editors (what is this?)Proteopedia Page Contributors and Editors (what is this?)

OCA

@@ Line 1: / Line 1: @@
-[[Image:1c51.gif|left|200px]]<br /><applet load="1c51" size="350" color="white" frame="true" align="right" spinBox="true"
+[[Image:1c51.gif|left|200px]]
-caption="1c51, resolution 4.0&Aring;" />
-'''PHOTOSYNTHETIC REACTION CENTER AND CORE ANTENNA SYSTEM (TRIMERIC), ALPHA CARBON ONLY'''<br />
+ {{Structure
+|PDB= 1c51 |SIZE=350|CAPTION= <scene name='initialview01'>1c51</scene>, resolution 4.0&Aring;
+|SITE=
+|LIGAND= <scene name='pdbligand=CLA:CHLOROPHYLL+A'>CLA</scene>, <scene name='pdbligand=PQN:PHYLLOQUINONE'>PQN</scene> and <scene name='pdbligand=SF4:IRON/SULFUR CLUSTER'>SF4</scene>
+|ACTIVITY=
+|GENE=
+}}
+'''PHOTOSYNTHETIC REACTION CENTER AND CORE ANTENNA SYSTEM (TRIMERIC), ALPHA CARBON ONLY'''
 ==Overview==
@@ Line 7: / Line 16: @@
 ==About this Structure==
-C51 is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/Synechococcus_elongatus Synechococcus elongatus] with <scene name='pdbligand=CLA:'>CLA</scene>, <scene name='pdbligand=PQN:'>PQN</scene> and <scene name='pdbligand=SF4:'>SF4</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1C51 OCA].
+C51 is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/Synechococcus_elongatus Synechococcus elongatus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1C51 OCA].
 ==Reference==
-Photosystem I, an improved model of the stromal subunits PsaC, PsaD, and PsaE., Klukas O, Schubert WD, Jordan P, Krauss N, Fromme P, Witt HT, Saenger W, J Biol Chem. 1999 Mar 12;274(11):7351-60. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=10066799 10066799]
+Photosystem I, an improved model of the stromal subunits PsaC, PsaD, and PsaE., Klukas O, Schubert WD, Jordan P, Krauss N, Fromme P, Witt HT, Saenger W, J Biol Chem. 1999 Mar 12;274(11):7351-60. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/10066799 10066799]
 [[Category: Protein complex]]
 [[Category: Synechococcus elongatus]]
@@ Line 30: / Line 39: @@
 [[Category: thermophilic cyanobacterium]]
-''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 12:02:26 2008''
+''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 10:19:53 2008''