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1kma

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Revision as of 13:43, 17 July 2019

NMR Structure of the Domain-I of the Kazal-type Thrombin Inhibitor Dipetalin

Structural highlights

1kma is a 1 chain structure with sequence from Blood-sucking bug. 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

[DPGN_DIPMA] Thrombin inhibitor. Prevents blood clotting to allow insect to feed on blood. Also functions as an inhibitor of trypsin and plasmin.^[1] ^[2] ^[3]

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

The interaction of domains of the Kazal-type inhibitor protein dipetalin with the serine proteinases thrombin and trypsin is studied. The functional studies of the recombinantly expressed domains (Dip-I+II, Dip-I and Dip-II) allow the dissection of the thrombin inhibitory properties and the identification of Dip-I as a key contributor to thrombin/dipetalin complex stability and its inhibitory potency. Furthermore, Dip-I, but not Dip-II, forms a complex with trypsin resulting in an inhibition of the trypsin activity directed towards protein substrates. The high resolution NMR structure of the Dip-I domain is determined using multi-dimensional heteronuclear NMR spectroscopy. Dip-I exhibits the canonical Kazal-type fold with a central alpha-helix and a short two-stranded antiparallel beta-sheet. Molecular regions essential for inhibitor complex formation with thrombin and trypsin are identified. A comparison with molecular complexes of other Kazal-type thrombin and trypsin inhibitors by molecular modeling shows that the N-terminal segment of Dip-I fulfills the structural prerequisites for inhibitory interactions with either proteinase and explains the capacity of this single Kazal-type domain to interact with different proteinases.

Interaction of Kazal-type inhibitor domains with serine proteinases: biochemical and structural studies.,Schlott B, Wohnert J, Icke C, Hartmann M, Ramachandran R, Guhrs KH, Glusa E, Flemming J, Gorlach M, Grosse F, Ohlenschlager O J Mol Biol. 2002 Apr 26;318(2):533-46. PMID:12051857^[4]

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

References

↑ Lange U, Keilholz W, Schaub GA, Landmann H, Markwardt F, Nowak G. Biochemical characterization of a thrombin inhibitor from the bloodsucking bug Dipetalogaster maximus. Haemostasis. 1999;29(4):204-11. PMID:10702701
↑ Mende K, Petoukhova O, Koulitchkova V, Schaub GA, Lange U, Kaufmann R, Nowak G. Dipetalogastin, a potent thrombin inhibitor from the blood-sucking insect. Dipetalogaster maximus cDNA cloning, expression and characterization. Eur J Biochem. 1999 Dec;266(2):583-90. PMID:10561601
↑ Schlott B, Wohnert J, Icke C, Hartmann M, Ramachandran R, Guhrs KH, Glusa E, Flemming J, Gorlach M, Grosse F, Ohlenschlager O. Interaction of Kazal-type inhibitor domains with serine proteinases: biochemical and structural studies. J Mol Biol. 2002 Apr 26;318(2):533-46. PMID:12051857 doi:10.1016/S0022-2836(02)00014-1
↑ Schlott B, Wohnert J, Icke C, Hartmann M, Ramachandran R, Guhrs KH, Glusa E, Flemming J, Gorlach M, Grosse F, Ohlenschlager O. Interaction of Kazal-type inhibitor domains with serine proteinases: biochemical and structural studies. J Mol Biol. 2002 Apr 26;318(2):533-46. PMID:12051857 doi:10.1016/S0022-2836(02)00014-1

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1kma"

@@ Line 1: / Line 1: @@
 ==NMR Structure of the Domain-I of the Kazal-type Thrombin Inhibitor Dipetalin==
-<StructureSection load='1kma' size='340' side='right' caption='[[1kma]], [[NMR_Ensembles_of_Models | 20 NMR models]]' scene=''>
+<StructureSection load='1kma' size='340' side='right'caption='[[1kma]], [[NMR_Ensembles_of_Models | 20 NMR models]]' scene=''>
 == Structural highlights ==
 <table><tr><td colspan='2'>[[1kma]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Blood-sucking_bug Blood-sucking bug]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1KMA OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1KMA FirstGlance]. <br>
@@ Line 12: / Line 12: @@
 Check<jmol>
   <jmolCheckbox>
-    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/km/1kma_consurf.spt"</scriptWhenChecked>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/km/1kma_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>
@@ Line 32: / Line 32: @@
 </StructureSection>
 [[Category: Blood-sucking bug]]
+[[Category: Large Structures]]
 [[Category: Flemming, J]]
 [[Category: Glusa, E]]

1kma

From Proteopedia

Revision as of 13:43, 17 July 2019

NMR Structure of the Domain-I of the Kazal-type Thrombin Inhibitor Dipetalin

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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