This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.

Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.


1wrg

From Proteopedia

(Difference between revisions)
Jump to: navigation, search
Line 1: Line 1:
-
[[Image:1wrg.gif|left|200px]]
+
{{Seed}}
 +
[[Image:1wrg.png|left|200px]]
<!--
<!--
Line 9: Line 10:
{{STRUCTURE_1wrg| PDB=1wrg | SCENE= }}
{{STRUCTURE_1wrg| PDB=1wrg | SCENE= }}
-
'''Light-Harvesting Complex 1 Beta Subunit from Wild-Type Rhodospirillum rubrum'''
+
===Light-Harvesting Complex 1 Beta Subunit from Wild-Type Rhodospirillum rubrum===
-
==Overview==
+
<!--
-
We have determined the solution structures of the core light-harvesting (LH1) alpha and beta-polypeptides from wild-type purple photosynthetic bacterium Rhodospirillum rubrum using multidimensional NMR spectroscopy. The two polypeptides form stable alpha helices in organic solution. The structure of alpha-polypeptide consists of a long helix of 32 amino acid residues over the central transmembrane domain and a short helical segment at the N terminus that is followed by a three-residue loop. Pigment-coordinating histidine residue (His29) in the alpha-polypeptide is located near the middle of the central helix. The structure of beta-polypeptide shows a single helix of 32 amino acid residues in the membrane-spanning region with the pigment-coordinating histidine residue (His38) at a position close to the C-terminal end of the helix. Strong hydrogen bonds have been identified for the backbone amide protons over the central helical regions, indicating a rigid property of the two polypeptides. The overall structures of the R.rubrum LH1 alpha and beta-polypeptides are different from those previously reported for the LH1 beta-polypeptide of Rhodobacter sphaeroides, but are very similar to the structures of the corresponding LH2 alpha and beta-polypeptides determined by X-ray crystallography. A model constructed for the structural subunit (B820) of LH1 complex using the solution structures reveals several important features on the interactions between the LH1 alpha and beta-polypeptides. The significance of the N-terminal regions of the two polypeptides for stabilizing both B820 and LH1 complexes, as clarified by many experiments, may be attributed to the interactions between the short N-terminal helix (Trp2-Gln6) of alpha-polypeptide and a GxxxG motif in the beta-polypeptide.
+
The line below this paragraph, {{ABSTRACT_PUBMED_15740753}}, adds the Publication Abstract to the page
 +
(as it appears on PubMed at http://www.pubmed.gov), where 15740753 is the PubMed ID number.
 +
-->
 +
{{ABSTRACT_PUBMED_15740753}}
==About this Structure==
==About this Structure==
-
1WRG is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Rhodospirillum_rubrum Rhodospirillum rubrum]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1WRG OCA].
+
1WRG is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Rhodospirillum_rubrum Rhodospirillum rubrum]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1WRG OCA].
==Reference==
==Reference==
Line 30: Line 34:
[[Category: Photosynthesis]]
[[Category: Photosynthesis]]
[[Category: Pigment binding]]
[[Category: Pigment binding]]
-
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 14:02:58 2008''
+
 
 +
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 17:01:57 2008''

Revision as of 14:02, 28 July 2008

Image:1wrg.png

Template:STRUCTURE 1wrg

Light-Harvesting Complex 1 Beta Subunit from Wild-Type Rhodospirillum rubrum

Template:ABSTRACT PUBMED 15740753

About this Structure

1WRG is a Single protein structure of sequence from Rhodospirillum rubrum. Full experimental information is available from OCA.

Reference

Solution structures of the core light-harvesting alpha and beta polypeptides from Rhodospirillum rubrum: implications for the pigment-protein and protein-protein interactions., Wang ZY, Gokan K, Kobayashi M, Nozawa T, J Mol Biol. 2005 Mar 25;347(2):465-77. Epub 2005 Jan 25. PMID:15740753

Page seeded by OCA on Mon Jul 28 17:01:57 2008

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1wrg"
Personal tools