[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[modeller_usage] Tyrosinekinase-Modelling



Hi mailing list!

I'm new to "modeller" and actually my modelling doesn't work.
However... let my explain...

Given is a tyrosine kinase, whose structure is already known. In some cases, this tyrosine kinase is mutated and a so called "internal tandem duplication" [itd] is inserted.

It looks like this:

wild type sequence:
AAAAAAAAAAAAABBBBBBBBBBBBBBB

itd:
AAAAAAAAAAAAAxxxxxxxxxxxBBBBBBBBBBBBBBB            (x = insertion)


So I have been performing an alignment and tried to run it with modeller. "model-default.py" was used for the first test.

Here is, what the logfile "says":

Kind, OS, HostName, Kernel, Processor: 4, Linux audio 2.6.15.1 i686
Date and time of compilation         : 02/28/2006 18:03:39
MODELLER executable type             : i386-intel8
Job starting time (YY/MM/DD HH:MM:SS): 2006/07/10  18:27:11.105

openf5__224_> Open       11  OLD  SEQUENTIAL  $(LIB)/restyp.lib
openf5__224_> Open 11 OLD SEQUENTIAL ${MODINSTALL8v2}/modlib/resdih.lib
rdrdih__263_> Number of dihedral angle types         :        9
              Maximal number of dihedral angle optima:        3
Dihedral angle names : Alph Phi Psi Omeg chi1 chi2 chi3 chi4 chi5 openf5__224_> Open 11 OLD SEQUENTIAL ${MODINSTALL8v2}/modlib/radii.lib openf5__224_> Open 11 OLD SEQUENTIAL ${MODINSTALL8v2}/modlib/radii14.lib openf5__224_> Open 11 OLD SEQUENTIAL ${MODINSTALL8v2}/modlib/af_mnchdef.lib
rdwilmo_274_> Mainchain residue conformation classes:  APBLE
openf5__224_> Open 11 OLD SEQUENTIAL ${MODINSTALL8v2}/modlib/mnch.lib
rdclass_257_> Number of classes:        5
openf5__224_> Open 11 OLD SEQUENTIAL ${MODINSTALL8v2}/modlib/mnch1.lib openf5__224_> Open 11 OLD SEQUENTIAL ${MODINSTALL8v2}/modlib/mnch2.lib openf5__224_> Open 11 OLD SEQUENTIAL ${MODINSTALL8v2}/modlib/mnch3.lib openf5__224_> Open 11 OLD SEQUENTIAL ${MODINSTALL8v2}/modlib/xs4.mat
rdrrwgh_268_> Number of residue types:       21
runcmd______> alignment.append(align_codes=['a627', '1rjb'], atom_files=[], file='alignment_final.ali', (def)remove_gaps=True, (def)alignment_format='PIR', add_sequence=True, (def)rewind_file=False, (def)close_file=True)

openf___224_> Open           alignment_final.ali

Dynamically allocated memory at amaxalignment [B,kB,MB]: 2270569 2217.353 2.165

Dynamically allocated memory at amaxalignment [B,kB,MB]: 2293501 2239.747 2.187

Dynamically allocated memory at amaxalignment [B,kB,MB]: 2316901 2262.599 2.210

Dynamically allocated memory at amaxalignment [B,kB,MB]: 2363701 2308.302 2.254

Dynamically allocated memory at amaxalignment [B,kB,MB]: 2457301 2399.708 2.343

Dynamically allocated memory at amaxalignment [B,kB,MB]: 2644501 2582.521 2.522

Read the alignment from file       : alignment_final.ali
Total number of alignment positions:   426

  #  Code        #_Res #_Segm PDB_code    Name
-------------------------------------------------------------------------------
  1       a627     426      1        a627 FLT3 mutated ITD
  2       1rjb     344      1        1rjb FLT3 wild type
runcmd______> alignment.check()

check_a_343_> >> BEGINNING OF COMMAND
check_a_337E> Structure not read in (please consult the log file
              for more details):        1  a627



This is my modified "model-default.py"

from modeller.automodel import *    # Load the automodel class

log.verbose()    # request verbose output
env = environ() # create a new MODELLER environment to build this model in

# directories for input atom files
env.io.atom_files_directory = './:../atom_files'

a = automodel(env,
              alnfile  = 'alignment_final.ali',     # alignment filename
              knowns   = 'a627',              # codes of the templates
              sequence = '1rjb')              # code of the target
a.starting_model= 1                 # index of the first model
a.ending_model  = 1                 # index of the last model
# (determines how many models to calculate)
a.make()                            # do the actual homology modelling


Any hints? Why has the structure not read?
Another question: Do I have to provide my sequence to be modelled a .pdb-file using "0.00" as coordinates or is it sufficient to provide it as .fasta?


Thanks in advance.