1b2v: Difference between revisions

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[[Image:1b2v.jpg|left|200px]]
{{Seed}}
[[Image:1b2v.png|left|200px]]


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{{STRUCTURE_1b2v|  PDB=1b2v  |  SCENE=  }}  
{{STRUCTURE_1b2v|  PDB=1b2v  |  SCENE=  }}  


'''HEME-BINDING PROTEIN A'''
===HEME-BINDING PROTEIN A===




==Overview==
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Free iron availability is strongly limited in vertebrate hosts, making the iron acquisition by siderophores inappropriate. Pathogenic bacteria have developed various ways to use the host's iron from iron-containing proteins. Serratia marcescens can use the iron from hemoglobin through the secretion of a hemophore called HasA, which takes up the heme from hemoglobin and shuttles it to the receptor HasR, which in turn, releases heme into the bacterium. We report here the first crystal structure of such a hemophore, bound to a heme group at two different pH values and at a resolution of 1.9 A. The structure reveals a new original fold and suggests a hypothetical mechanism for both heme uptake and release.
The line below this paragraph, {{ABSTRACT_PUBMED_10360351}}, adds the Publication Abstract to the page
(as it appears on PubMed at http://www.pubmed.gov), where 10360351 is the PubMed ID number.
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{{ABSTRACT_PUBMED_10360351}}


==About this Structure==
==About this Structure==
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[[Category: Heme acquisition]]
[[Category: Heme acquisition]]
[[Category: Iron metabolism]]
[[Category: Iron metabolism]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May  2 10:59:23 2008''
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jun 30 18:06:22 2008''
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