1vd2: Difference between revisions

Revision as of 12:23, 3 May 2008

Solution Structure of the PB1 domain of PKCiota

OverviewOverview

Atypical protein kinase C (aPKC) has been implicated in several signaling pathways such as cell polarity, cell survival, and cell differentiation. In contrast to other PKCs, aPKC is unique in having the PB1 (Phox and Bem 1) domain in the N terminus. The aPKC PB1 domain binds with ZIP/p62, Par6, or MEK5 through a PB1-PB1 domain interaction that controls the localization of aPKC. Here, we determined the three-dimensional structure of the PB1 domain of PKCiota by NMR and found that the PB1 domain adopts a ubiquitin fold. The OPCA (OPR, PC, and AID) motif inserted into the ubiquitin fold was presented as a betabetaalpha fold in which the side chains of conserved Asp residues were oriented to the same direction to form an acidic surface. This structural feature suggested that the acidic surface of the PKCiota PB1 domain interacted with the basic surface of the target PB1 domains, and this was confirmed in the case of the PKCiota-ZIP/p62 complex by mutational analysis. Interestingly, in the PKCiota PB1 domain a conserved lysine residue was located on the side opposite to the OPCA motif-presenting surface, suggesting dual roles for the PKCiota PB1 domain in that it could interact with either the conserved lysine residue or the acidic residues on the OPCA motif of the target PB1 domains.

About this StructureAbout this Structure

1VD2 is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.

ReferenceReference

Solution structure of atypical protein kinase C PB1 domain and its mode of interaction with ZIP/p62 and MEK5., Hirano Y, Yoshinaga S, Ogura K, Yokochi M, Noda Y, Sumimoto H, Inagaki F, J Biol Chem. 2004 Jul 23;279(30):31883-90. Epub 2004 May 13. PMID:15143057 Page seeded by OCA on Sat May 3 12:23:38 2008

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OCA

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 [[Image:1vd2.gif|left|200px]]
- {{Structure
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-|ACTIVITY= <span class='plainlinks'>[http://en.wikipedia.org/wiki/Non-specific_serine/threonine_protein_kinase Non-specific serine/threonine protein kinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.11.1 2.7.11.1] </span>
+or leave the SCENE parameter empty for the default display.
-|GENE= PKCiota ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])
+-->
-|DOMAIN=
+{{STRUCTURE_1vd2|  PDB=1vd2  |  SCENE=  }}
-|RELATEDENTRY=[[1q1o|1Q1O]], [[1ip9|1IP9]], [[1ipg|1IPG]], [[1oey|1OEY]]
-|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1vd2 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1vd2 OCA], [http://www.ebi.ac.uk/pdbsum/1vd2 PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1vd2 RCSB]</span>
-}}
 '''Solution Structure of the PB1 domain of PKCiota'''
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 [[Category: Yokochi, M.]]
 [[Category: Yoshinaga, S.]]
-[[Category: apkc]]
+[[Category: Apkc]]
-[[Category: kinase]]
+[[Category: Kinase]]
-[[Category: mek5]]
+[[Category: Mek5]]
-[[Category: molecular recognition]]
+[[Category: Molecular recognition]]
-[[Category: opca motif]]
+[[Category: Opca motif]]
-[[Category: pb1 domain]]
+[[Category: Pb1 domain]]
-[[Category: zip/p62]]
+[[Category: Zip/p62]]
+''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May  3 12:23:38 2008''
-''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Mar 31 00:22:42 2008''