Hi Pius, Thanks for the tip. I've never used that utility in PyMol. It'll give it go! >From the drop-down menu of the Builder tab, it seems like one could specify the secondary structure as well. Have you ever tried that option? Thanks.
On Mon, Jul 11, 2011 at 12:43 PM, Pius Padayatti <ppadaya...@gmail.com>wrote: > I am just guessing this what you want. > a peptide of certain length say 10 aa and need it to be built. > use pymol Builder utility and choose protein and build your peptide. > you do not need any density. > write out the co-ordiantes and use it in autodock for docking. > pius > > > On Mon, Jul 11, 2011 at 12:41 PM, crystal <aac...@gmail.com> wrote: > > Hi all, > > Thanks for all the helpful suggestions. It seems like Phenix > LigandFit > > requires density for the ligand but unfortunately I only have the > > ligand-free model. I've tried blasting the peptide sequence using the > > "sequence search" tool in the PDB but failed to get any hits. I was > > wondering how one could "grep it out of a set of PDB files like Robbie > has > > mentioned. Since there is relatively high conformational flexibility, I > was > > thinking about starting with a 5-mer. Does that sound reasonable with > people > > who have experience with peptide docking? Pius mentioned about making the > > model in Coot, PyMol etc. Do you need density in order to fit the ligand > or > > can one just mutate residues along a strand in an existing model to the > > desired sequence and use that fragment for docking? > > Thanks for the helpful feedback, everyone. > > > > > > On Sun, Jul 10, 2011 at 8:54 PM, Joel Tyndall <joel.tynd...@otago.ac.nz> > > wrote: > >> > >> How big is the peptide? > >> > >> > >> > >> _________________________________ > >> > >> Joel Tyndall, PhD > >> > >> Senior Lecturer in Medicinal Chemistry > >> National School of Pharmacy > >> University of Otago > >> PO Box 56 Dunedin 9054 > >> New Zealand > >> > >> Skype: jtyndall > >> http://www.researcherid.com/rid/C-2803-2008 > >> > >> Pukeka Matua > >> Te Kura Taiwhanga Putaiao > >> Te Whare Wananga o Otago > >> Pouaka Poutapeta 56 Otepoti 9054 > >> Aotearoa > >> > >> Ph / Waea +64 3 4797293 > >> Fax / Waeawhakaahua +64 3 4797034 > >> > >> > >> > >> From: CCP4 bulletin board [mailto:CCP4BB@JISCMAIL.AC.UK] On Behalf Of > >> crystal > >> Sent: Saturday, 9 July 2011 1:09 p.m. > >> > >> To: CCP4BB@JISCMAIL.AC.UK > >> Subject: [ccp4bb] peptide docking > >> > >> > >> > >> Hi all, > >> As I'm a newbie in peptide docking, I was wondering what > >> programs/servers people would suggest for generating the peptide PDB > >> (keeping all the proper stereochemistry)? > >> Is it possible to extract a file from the PDB database? > >> All comments will be much appreciated! > > > > > > -- > Pius S Padayatti,PhD, > Phone: 216-658-4528 >
