3bjm: Difference between revisions

Revision as of 15:05, 27 July 2008

This article has been automatically seeded. Changes to this page should pertain to the PDB entry only and not to the protein or biomolecule in general.

File:3bjm.png

Template:STRUCTURE 3bjm

Crystal structure of human DPP-IV in complex with (1S,3S, 5S)-2-[(2S)-2-AMINO-2-(3-HYDROXYTRICYCLO[3.3.1.13,7]DEC-1- YL)ACETYL]-2-AZABICYCLO[3.1.0]HEXANE-3-CARBONITRILE (CAS), (1S,3S,5S)-2-((2S)-2-AMINO-2-(3-HYDROXYADAMANTAN-1- YL)ACETYL)-2-AZABICYCLO[3.1.0]HEXANE-3-CARBONITRILE (IUPAC), OR BMS-477118Crystal structure of human DPP-IV in complex with (1S,3S, 5S)-2-[(2S)-2-AMINO-2-(3-HYDROXYTRICYCLO[3.3.1.13,7]DEC-1- YL)ACETYL]-2-AZABICYCLO[3.1.0]HEXANE-3-CARBONITRILE (CAS), (1S,3S,5S)-2-((2S)-2-AMINO-2-(3-HYDROXYADAMANTAN-1- YL)ACETYL)-2-AZABICYCLO[3.1.0]HEXANE-3-CARBONITRILE (IUPAC), OR BMS-477118

Template:ABSTRACT PUBMED 18227430

About this StructureAbout this Structure

3BJM is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.

ReferenceReference

Involvement of DPP-IV catalytic residues in enzyme-saxagliptin complex formation., Metzler WJ, Yanchunas J, Weigelt C, Kish K, Klei HE, Xie D, Zhang Y, Corbett M, Tamura JK, He B, Hamann LG, Kirby MS, Marcinkeviciene J, Protein Sci. 2008 Feb;17(2):240-50. PMID:18227430

Page seeded by OCA on Sun Jul 27 15:05:37 2008

Proteopedia Page Contributors and Editors (what is this?)Proteopedia Page Contributors and Editors (what is this?)

OCA

@@ Line 1: / Line 1: @@
-[[Image:3bjm.jpg|left|200px]]
+{{Seed}}
+[[Image:3bjm.png|left|200px]]
 <!--
@@ Line 9: / Line 10: @@
 {{STRUCTURE_3bjm|  PDB=3bjm  |  SCENE=  }}
-'''Crystal structure of human DPP-IV in complex with (1S,3S, 5S)-2-[(2S)-2-AMINO-2-(3-HYDROXYTRICYCLO[3.3.1.13,7]DEC-1- YL)ACETYL]-2-AZABICYCLO[3.1.0]HEXANE-3-CARBONITRILE (CAS), (1S,3S,5S)-2-((2S)-2-AMINO-2-(3-HYDROXYADAMANTAN-1- YL)ACETYL)-2-AZABICYCLO[3.1.0]HEXANE-3-CARBONITRILE (IUPAC), OR BMS-477118'''
+===Crystal structure of human DPP-IV in complex with (1S,3S, 5S)-2-[(2S)-2-AMINO-2-(3-HYDROXYTRICYCLO[3.3.1.13,7]DEC-1- YL)ACETYL]-2-AZABICYCLO[3.1.0]HEXANE-3-CARBONITRILE (CAS), (1S,3S,5S)-2-((2S)-2-AMINO-2-(3-HYDROXYADAMANTAN-1- YL)ACETYL)-2-AZABICYCLO[3.1.0]HEXANE-3-CARBONITRILE (IUPAC), OR BMS-477118===
-==Overview==
+<!--
-The inhibition of DPP-IV by saxagliptin has been proposed to occur through formation of a covalent but reversible complex. To evaluate further the mechanism of inhibition, we determined the X-ray crystal structure of the DPP-IV:saxagliptin complex. This structure reveals covalent attachment between S630 and the inhibitor nitrile carbon (C-O distance &lt;1.3 A). To investigate whether this serine addition is assisted by the catalytic His-Asp dyad, we generated two mutants of DPP-IV, S630A and H740Q, and assayed them for ability to bind inhibitor. DPP-IV H740Q bound saxagliptin with an approximately 1000-fold reduction in affinity relative to DPP-IV WT, while DPP-IV S630A showed no evidence for binding inhibitor. An analog of saxagliptin lacking the nitrile group showed unchanged binding properties to the both mutant proteins, highlighting the essential role S630 and H740 play in covalent bond formation between S630 and saxagliptin. Further supporting mechanism-based inhibition by saxagliptin, NMR spectra of enzyme-saxagliptin complexes revealed the presence of three downfield resonances with low fractionation factors characteristic of short and strong hydrogen bonds (SSHB). Comparison of the NMR spectra of various wild-type and mutant DPP-IV:ligand complexes enabled assignment of a resonance at approximately 14 ppm to H740. Two additional DPP-IV mutants, Y547F and Y547Q, generated to probe potential stabilization of the enzyme-inhibitor complex by this residue, did not show any differences in inhibitor binding either by ITC or NMR. Together with the previously published enzymatic data, the structural and binding data presented here strongly support a histidine-assisted covalent bond formation between S630 hydroxyl oxygen and the nitrile group of saxagliptin.
+The line below this paragraph, {{ABSTRACT_PUBMED_18227430}}, adds the Publication Abstract to the page
+(as it appears on PubMed at http://www.pubmed.gov), where 18227430 is the PubMed ID number.
+-->
+{{ABSTRACT_PUBMED_18227430}}
 ==About this Structure==
@@ Line 39: / Line 43: @@
 [[Category: Signal-anchor]]
 [[Category: Transmembrane]]
-''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Apr 24 09:48:42 2008''
+''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Jul 27 15:05:37 2008''