1s7m

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{{STRUCTURE_1s7m| PDB=1s7m | SCENE= }}
{{STRUCTURE_1s7m| PDB=1s7m | SCENE= }}
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'''Crystal Structure of HiaBD1'''
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===Crystal Structure of HiaBD1===
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==Overview==
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Haemophilus influenzae is an important human pathogen that initiates infection by colonizing the upper respiratory tract. The H. influenzae Hia autotransporter is an adhesive protein that promotes adherence to respiratory epithelial cells. Hia adhesive activity resides in two homologous binding domains, called HiaBD1 and HiaBD2. These domains interact with the same host cell receptor, but bind with different affinities. In this report, we describe the crystal structure of the high-affinity HiaBD1 binding domain, which has a novel trimeric architecture with three-fold symmetry and a mushroom shape. The subunit constituents of the trimer are extensively intertwined. The receptor-binding pocket is formed by an acidic patch that is present on all three faces of the trimer, providing potential for a multivalent interaction with the host cell surface, analogous to observations with the trimeric tumor necrosis factor superfamily of proteins. Hia is a novel example of a bacterial trimeric adhesin and may be the prototype member of a large family of bacterial virulence proteins with a similar architecture.
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(as it appears on PubMed at http://www.pubmed.gov), where 15029242 is the PubMed ID number.
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{{ABSTRACT_PUBMED_15029242}}
==About this Structure==
==About this Structure==
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[[Category: Autotransporter]]
[[Category: Autotransporter]]
[[Category: Homotrimer]]
[[Category: Homotrimer]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 08:23:55 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 16:54:35 2008''

Revision as of 13:54, 28 July 2008

Image:1s7m.png

Template:STRUCTURE 1s7m

Crystal Structure of HiaBD1

Template:ABSTRACT PUBMED 15029242

About this Structure

1S7M is a Single protein structure of sequence from Haemophilus influenzae. Full crystallographic information is available from OCA.

Reference

Structural basis for host recognition by the Haemophilus influenzae Hia autotransporter., Yeo HJ, Cotter SE, Laarmann S, Juehne T, St Geme JW 3rd, Waksman G, EMBO J. 2004 Mar 24;23(6):1245-56. Epub 2004 Mar 18. PMID:15029242

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