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1srx

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[[Image:1srx.gif|left|200px]]
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{{STRUCTURE_1srx| PDB=1srx | SCENE= }}
{{STRUCTURE_1srx| PDB=1srx | SCENE= }}
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'''THREE-DIMENSIONAL STRUCTURE OF ESCHERICHIA COLI THIOREDOXIN-S2 TO 2.8 ANGSTROMS RESOLUTION'''
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===THREE-DIMENSIONAL STRUCTURE OF ESCHERICHIA COLI THIOREDOXIN-S2 TO 2.8 ANGSTROMS RESOLUTION===
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==Overview==
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The three-dimensional structure of the electron transport protein thioredoxin-S2 from E. coli has been determined from a 2.8 A resolution electron density map. The molecule is built up of a central core of three parallel and two antiparallel strands of pleated sheet surrounded by four helices. Thr residues involved in the active center 14-membered disulfide ring of thioredoxin form a protrusion between one of the helices and the middle strand of the pleated sheet. This region of the molecule, comprising two parallel strands joined by the protrusion and a helix, is structurally very similar to corresponding functionally important regions in the nucleotide-binding domains of flavodoxin and the dehydrogenases. The molecule has about 75% of the residues in well-defined secondary structures. The structure indicates that the carboxy-terminal third of the molecule forms an independent folding unit consisting of two strands of antiparallel pleated sheet and a terminal alpha-helix. This agress with the noncovalent reconstitution experiments from thioredoxin peptide fragments. Thioredoxin is an example of a protein with the active center located on a protrusion rather than in a cleft, thus demonstrating the existence of male proteins.
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(as it appears on PubMed at http://www.pubmed.gov), where 1094461 is the PubMed ID number.
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{{ABSTRACT_PUBMED_1094461}}
==About this Structure==
==About this Structure==
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[[Category: Soderberg, B O.]]
[[Category: Soderberg, B O.]]
[[Category: Electron transport]]
[[Category: Electron transport]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 09:04:25 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Jul 27 21:20:49 2008''

Revision as of 18:21, 27 July 2008

Template:STRUCTURE 1srx

THREE-DIMENSIONAL STRUCTURE OF ESCHERICHIA COLI THIOREDOXIN-S2 TO 2.8 ANGSTROMS RESOLUTION

Template:ABSTRACT PUBMED 1094461

About this Structure

1SRX is a Single protein structure of sequence from Escherichia coli b. Full crystallographic information is available from OCA.

Reference

Three-dimensional structure of Escherichia coli thioredoxin-S2 to 2.8 A resolution., Holmgren A, Soderberg BO, Eklund H, Branden CI, Proc Natl Acad Sci U S A. 1975 Jun;72(6):2305-9. PMID:1094461

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