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6tob

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Structural and DNA Binding Properties of Mycobacterial Integration Host Factor mIHF

Structural highlights

6tob is a 1 chain structure with sequence from Mycobacterium tuberculosis. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance.
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

P71658_MYCTU

Publication Abstract from PubMed

In bacteria, nucleoid associated proteins (NAPs) take part in active chromosome organization by supercoil management, three-dimensional DNA looping and direct transcriptional control. Mycobacterial integration host factor (mIHF, rv1388) is a NAP restricted to Actinobacteria and essential for survival of the human pathogen Mycobacterium tuberculosis. We show in vitro that DNA binding by mIHF strongly stabilizes the protein and increases its melting temperature. The structure obtained by Nuclear Magnetic Resonance (NMR) spectroscopy characterizes mIHF as a globular protein with a protruding alpha helix and a disordered N-terminus, similar to Streptomyces coelicolor IHF (sIHF). NMR revealed no residues of high flexibility, suggesting that mIHF is a rigid protein overall that does not undergo structural rearrangements. We show that mIHF only binds to double stranded DNA in solution, through two DNA binding sites (DBSs) similar to those identified in the x-ray structure of sIHF. According to Atomic Force Microscopy, mIHF is able to introduce left-handed loops of ca. 100 nm size ( approximately 300 bp) in supercoiled cosmids, thereby unwinding and relaxing the DNA.

Structural and DNA Binding Properties of Mycobacterial Integration Host Factor mIHF.,Odermatt NT, Lelli M, Herrmann T, Abriata LA, Japaridze A, Voilquin H, Singh R, Piton J, Emsley L, Dietler G, Cole ST J Struct Biol. 2019 Dec 14:107434. doi: 10.1016/j.jsb.2019.107434. PMID:31846718^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Odermatt NT, Lelli M, Herrmann T, Abriata LA, Japaridze A, Voilquin H, Singh R, Piton J, Emsley L, Dietler G, Cole ST. Structural and DNA Binding Properties of Mycobacterial Integration Host Factor mIHF. J Struct Biol. 2019 Dec 14:107434. doi: 10.1016/j.jsb.2019.107434. PMID:31846718 doi:http://dx.doi.org/10.1016/j.jsb.2019.107434

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/6tob"

Categories: Large Structures | Mycobacterium tuberculosis | Herrmann T

@@ Line 1: / Line 1: @@
 ==Structural and DNA Binding Properties of Mycobacterial Integration Host Factor mIHF==
-<StructureSection load='6tob' size='340' side='right'caption='[[6tob]], [[NMR_Ensembles_of_Models | 20 NMR models]]' scene=''>
+<StructureSection load='6tob' size='340' side='right'caption='[[6tob]]' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[6tob]] is a 1 chain structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6TOB OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6TOB FirstGlance]. <br>
+<table><tr><td colspan='2'>[[6tob]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Mycobacterium_tuberculosis Mycobacterium tuberculosis]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6TOB OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6TOB FirstGlance]. <br>
-</td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6tob FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6tob OCA], [http://pdbe.org/6tob PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6tob RCSB], [http://www.ebi.ac.uk/pdbsum/6tob PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6tob ProSAT]</span></td></tr>
+</td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=6tob FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6tob OCA], [https://pdbe.org/6tob PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6tob RCSB], [https://www.ebi.ac.uk/pdbsum/6tob PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6tob ProSAT]</span></td></tr>
 </table>
+== Function ==
+[https://www.uniprot.org/uniprot/P71658_MYCTU P71658_MYCTU]
 <div style="background-color:#fffaf0;">
 == Publication Abstract from PubMed ==
@@ Line 20: / Line 22: @@
 </StructureSection>
 [[Category: Large Structures]]
-[[Category: Herrmann, T]]
+[[Category: Mycobacterium tuberculosis]]
-[[Category: Transcriptional control. mycobacterial integration host factor - mihf is an alpha-helical protein with two dna-binding site]]
+[[Category: Herrmann T]]
-[[Category: Dna binding protein]]

6tob

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Current revision

Structural and DNA Binding Properties of Mycobacterial Integration Host Factor mIHF

Structural highlights

Function

Publication Abstract from PubMed

References

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