View source for 4bt8


==CRYSTAL STRUCTURE OF THE APO FORM OF N-TERMINAL DOMAIN AND PEPTIDE SUBSTRATE BINDING DOMAIN OF PROLYL-4 HYDROXYLASE TYPE I FROM HUMAN==
<StructureSection load='4bt8' size='340' side='right'caption='[[4bt8]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[4bt8]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4BT8 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4BT8 FirstGlance]. <br>
</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4bt9|4bt9]], [[4bta|4bta]], [[4btb|4btb]]</td></tr>
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Procollagen-proline_dioxygenase Procollagen-proline dioxygenase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.14.11.2 1.14.11.2] </span></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=4bt8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4bt8 OCA], [http://pdbe.org/4bt8 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4bt8 RCSB], [http://www.ebi.ac.uk/pdbsum/4bt8 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4bt8 ProSAT]</span></td></tr>
</table>
== Function ==
[[http://www.uniprot.org/uniprot/P4HA1_HUMAN P4HA1_HUMAN]] Catalyzes the post-translational formation of 4-hydroxyproline in -Xaa-Pro-Gly- sequences in collagens and other proteins. 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Collagen prolyl 4-hydroxylase (C-P4H) catalyzes the proline hydroxylation of procollagen, an essential modification in the maturation of collagens. C-P4H consists of two catalytic alpha subunits and two protein disulfide isomerase beta subunits. The assembly of these subunits is unknown. The alpha subunit contains an N domain (1-143), a peptide-substrate-binding-domain (PSB, 144-244) and a catalytic domain (245-517). Here, we report the dimeric structure of the N-terminal region (1-244) of the alpha subunit. It is shown that the N domain has an important role in the assembly of the C-P4H tetramer, by forming an extended four-helix bundle that includes an antiparallel coiled-coil dimerization motif between the two alpha subunits. Complexes of this construct with a C-P4H inhibitor and substrate show the mode of peptide-binding to the PSB domain. Both peptides adopt a poly-(L)-proline-type-II helix conformation and bind in a curved, asymmetric groove lined by conserved tyrosines and an Arg-Asp salt bridge.

The Structural Motifs for Substrate Binding and Dimerization of the alpha Subunit of Collagen Prolyl 4-Hydroxylase.,Anantharajan J, Koski MK, Kursula P, Hieta R, Bergmann U, Myllyharju J, Wierenga RK Structure. 2013 Oct 23. pii: S0969-2126(13)00355-9. doi:, 10.1016/j.str.2013.09.005. PMID:24207127<ref>PMID:24207127</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 4bt8" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Human]]
[[Category: Large Structures]]
[[Category: Procollagen-proline dioxygenase]]
[[Category: Anantharajan, J]]
[[Category: Koski, M K]]
[[Category: Wierenga, R K]]
[[Category: Coiled-coil]]
[[Category: Oxidoreductase]]
[[Category: Tetratricopeptide repeat motif]]