Sandbox Reserved 1628

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==Epithelial Adhesin 1A==
==Epithelial Adhesin 1A==
<StructureSection load='4af9' size='340' side='right' caption='EpaA in a complex with Galb1-3Glc' scene=''>
<StructureSection load='4af9' size='340' side='right' caption='EpaA in a complex with Galb1-3Glc' scene=''>
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Adhesins, commonly found on the surface of bacteria, aid in binding or adhering the bacteria to other cells. This is normally the beginning of an infection as the bacteria can bind to a host cell and potentially start a cascade of events within the host cell that leads to the bacteria invading<ref>PMID:9973330</ref>. Various bacteria have various types of adhesin proteins, but this page looks specifically at epithelial adhesins, particularly one found in ''Candida glabrata'' which causes infections most often in immunosuppressed patients<ref>PMID:9880475</ref> and can lead to deadly bloodstream infections.
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Adhesins, commonly found on the surface of bacteria, aid in binding or adhering the bacteria to other cells. This is normally the beginning of an infection as the bacteria can bind to a host cell and potentially start a cascade of events within the host cell that leads to the bacteria invading<ref>PMID:9973330</ref>. Various bacteria have various types of adhesin proteins, but this page looks specifically at epithelial adhesins, particularly one found in ''Candida glabrata'' which causes infections most often in immunosuppressed patients<ref name="yeast"><ref>PMID:9880475</ref> and can lead to deadly bloodstream infections.
== Function of your Protein ==
== Function of your Protein ==
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Adhesins are used for binding cells together, commonly found helping pathogens bind to host cells. This specific adhesin has a ligand of <scene name='86/861610/Ligandhighlight/1'>beta-D-galactopyranose-(1,3)-beta-D-glucopyranose.</scene> <scene name='86/861610/Bdglacbdglc/2'>A close up view of just the sugar ligand.</scene> <scene name='86/861610/Ligandandactivelabel/2'>This shows how the ligand and active site interact.</scene>
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''Candida glabrata'' is a yeast that commonly interacts with other yeast bacteria to infect humans with what are commonly known as thrush, yeast infections, and urinary tract infections<ref name="yeast" />.
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The protein is mainly made of antiparallel beta sheets, with the loops connecting the sheets making up the most critical parts of the active site. Two loops responsible for binding to the calcium ion, CBL1 and CLB2, are closer to the rest of the protein, and loops L1-L3 are further out - some of these loops are highly conserved between different adhesins, some are very variable.
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//Adhesins are used for binding cells together, commonly found helping pathogens bind to host cells. This specific adhesin has a ligand of <scene name='86/861610/Ligandhighlight/1'>beta-D-galactopyranose-(1,3)-beta-D-glucopyranose.</scene> <scene name='86/861610/Bdglacbdglc/2'>A close up view of just the sugar ligand.</scene> <scene name='86/861610/Ligandandactivelabel/2'>This shows how the ligand and active site interact.</scene>
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The protein is mainly made of antiparallel beta sheets, with the loops connecting the sheets making up the most critical parts of the active site. Two loops responsible for binding to the calcium ion, CBL1 and CLB2, are closer to the rest of the protein, and loops L1-L3 are further out - some of these loops are highly conserved between different adhesins, some are very variable.//
== Biological relevance and broader implications ==
== Biological relevance and broader implications ==

Revision as of 00:49, 8 December 2020

This Sandbox is Reserved from 09/18/2020 through 03/20/2021 for use in CHEM 351 Biochemistry taught by Bonnie Hall at Grand View University, Des Moines, IA. This reservation includes Sandbox Reserved 1628 through Sandbox Reserved 1642.
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Epithelial Adhesin 1A

EpaA in a complex with Galb1-3Glc

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References

[3]

  1. Soto GE, Hultgren SJ. Bacterial adhesins: common themes and variations in architecture and assembly. J Bacteriol. 1999 Feb;181(4):1059-71. doi: 10.1128/JB.181.4.1059-1071.1999. PMID:9973330 doi:http://dx.doi.org/10.1128/JB.181.4.1059-1071.1999
  2. 2.0 2.1 <ref>PMID:9880475</li> <li id="cite_note-2">[[#cite_ref-2|↑]] Hoffmann D, Diderrich R, Reithofer V, Friederichs S, Kock M, Essen LO, Mosch HU. Functional reprogramming of Candida glabrata epithelial adhesins: the role of conserved and variable structural motifs in ligand binding. J Biol Chem. 2020 Jul 15. pii: RA120.013968. doi: 10.1074/jbc.RA120.013968. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/32669365 32669365] doi:[http://dx.doi.org/10.1074/jbc.RA120.013968 http://dx.doi.org/10.1074/jbc.RA120.013968]</li></ol></ref>
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