My (educated) guess is that Coot doesnt recognise your nucleotides as
such and hence doesnt find any atoms to do the lsq superposition with.
The different nucleotide name 'conventions' strike again....

B

***************************************************

Dr. Bernhard Lohkamp
Assistant Professor
Div. Molecular Structural Biology
Dept. of Medical Biochemistry and Biophysics (MBB)
Karolinska Institutet
S-17177 Stockholm
Sweden

phone: (+46) 08-52487673
fax:   (+46) 08-327626
email: [email protected]

----- Original Message -----
From: Francis E Reyes <[email protected]>
Date: Thursday, September 24, 2009 4:54 pm
Subject: [COOT] NCS ghosts and map broken?
To: [email protected]

> Hi all
> 
> It seems that adding ncs ghosts and then ncs maps is broken for my  
> model / coot combo.
> 
> Coot is at ver 0.6-pre-1 rev 2334.
> 
> Thanks!
> 
> 
> 
> 
> 
> 
> This is what phenix.simple_ncs_from_pdb gives me
> ==================== Process input NCS or/and find new NCS  
> ====================
> 
> NCS groups found in parameter file: 1
> NCS group 0:
>   reference= chain A and (resseq 1:39 or resseq 43:54 )
>   selection= chain B and (resseq 1:39 or resseq 43:54 )
> 
> Automatic NCS search:
> 
> 
> #                       simple_ncs_from_pdb
> #
> # Find ncs among chains in a PDB file
> 
> # type phenix.doc for help
> 
> Getting NCS from suggested chains:
> RMSD for suggested group  ['A', 'B'] [[[1, 39], [43, 54]], [[1, 
> 39],  
> [43, 54]]]  is  0.0121907468281
> 
> Updated/new NCS groups:
> refinement.ncs.restraint_group {
>   reference = chain 'A' and (resseq 1:39 or resseq 43:54 )
>   selection = chain 'B' and (resseq 1:39 or resseq 43:54 )
> }
> 
> 
>                   ----------Building NCS restraints----------
> 
> NCS restraint group 1:
>   NCS operator 1:
>     Reference selection: "chain A and (resseq 1:39 or resseq 43:54 )"
>         Other selection: "chain B and (resseq 1:39 or resseq 43:54 )"
>     Number of atom pairs: 1103
>     Rotation={{-0.500763, -0.865584, 0.000393409},
>               {-0.865584, 0.500763, 0.000526561},
>               {-0.000652788, -7.68463*^-05, -1}}
>     Translation={{-53.5412}, {-30.8968}, {104.68}}
>     Histogram of differences:
>       0.000454 - 0.008521: 479
>       0.008521 - 0.016588: 422
>       0.016588 - 0.024655: 146
>       0.024655 - 0.032722: 40
>       0.032722 - 0.040790: 13
>       0.040790 - 0.048857: 3
>     RMS difference with respect to the reference: 0.013137
> 
> 
> 
> 
> However when I try to overlay ncs ghosts and a ncs map I get this 
> from  
> coot
> NCS_controller display chain toggled for imol 0 chain 1 state 1
> %%%% ncs_control_display_chain
>         There are 1 ghosts
>          ighost: 0
>         name: "NCS found from matching Chain B onto Chain A"
>          chainid: B
>          target chain id: A
>          display_it_flag 1
> %%%%%%%%% calling fill_ghost_info() from c-interface.cc  
> make_ncs_ghosts_maybe()
> INFO:: NCS chain comparison 51/51
> First atom of 1103 in first  selection 1/A/1/Gr/ P   altLoc ::  
> segid :A: pos: (-26.744,-11.257,24.195) B-factor: 106.43
> First atom of 1103 in second selection 1/B/1/Gr/ P   altLoc ::  
> segid :A: pos: (-30.371,-13.357,80.514) B-factor: 107.38
> WARNING - no residue for reference residue number 40 A
> WARNING - no residue for moving molecule residue number 40 B
> WARNING - no residue for reference residue number 41 A
> WARNING - no residue for moving molecule residue number 41 B
> WARNING - no residue for reference residue number 42 A
> WARNING - no residue for moving molecule residue number 42 B
> WARNING:: no points to do matching
>    find_ncs_matrix returns (LSQ) junk
> |         0,         0,         0|
> |         0,         0,         0|
> |         0,         0,         0|
> (         0,         0,         0)
>   INFO:: fill_ghost_info Constructed 1 ghosts
>       Ghost 0 name: "NCS found from matching Chain B onto Chain A"
> INFO:: installing ghost map with name :NCS found from matching 
> Chain B  
> onto Chain A
> Done install_ghost_map
> Reference matcher: 0 and 0
> |6.953e-310,6.953e-310,6.953e-310|
> |2.238e-314, 1.16e-315,1.334e-322|
> |4.244e-314,4.032e-321,         0|
> (2.144e-314,         0,         0)
> inverse of reference matcher transformation:
> |       nan,       nan,       nan|
> |       nan,       nan,       nan|
> |       nan,       nan,       nan|
> (       nan,       nan,       nan)
> boxing over uvw = (   -0.6365,   -0.3535,   0.08703) to uvw =  
> (    0.2349,    0.1764,    0.6158)
> INFO:: There were 2 maps contributing to the average
> INFO:: rescaling by 0.5
> INFO:: 316520 out of 331872 (95.3741%) map points  were masked out 
> of  
> NCS average target volume,  chain A
> INFO:: made 1 averaged map(s)
> Map statistics: mean: nan st.d: nan
> Map statistics: min: 0, max: 0
> /sw/bin/coot: line 5: 66873 Segmentation fault      /sw64/bin/coot- 
> real "$@"
> 
> 
> 
> 
> 
> 
> ---------------------------------------------
> Francis Reyes M.Sc.
> 215 UCB
> University of Colorado at Boulder
> 
> gpg --keyserver pgp.mit.edu --recv-keys 67BA8D5D
> 
> 8AE2 F2F4 90F7 9640 28BC  686F 78FD 6669 67BA 8D5D
> 

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