""" 2011_04_11: Hongbo Zhu PyMOL plugin for running DSSP and display SS using different colors. The DSSP codes for secondary structure are: H - Alpha helix (4-12) G - 3-10 helix I - pi helix E - Strand B - Isolated beta-bridge residue T - Turn S - Bend - - None 2011_04_24: add stride STRIDE code (taken from stride.doc) is nearly the same as DSSP H Alpha helix G 3-10 helix I PI-helix E Extended conformation B or b Isolated bridge T Turn C Coil (none of the above) """ # Copyright Notice # ================ # # The PyMOL Plugin source code in this file is copyrighted, but you can # freely use and copy it as long as you don't change or remove any of # the copyright notices. # # ---------------------------------------------------------------------- # This PyMOL Plugin is Copyright (C) 2011 by # Hongbo Zhu # # All Rights Reserved # # Permission to use, copy, modify, distribute, and distribute modified # versions of this software and its documentation for any purpose and # without fee is hereby granted, provided that the above copyright # notice appear in all copies and that both the copyright notice and # this permission notice appear in supporting documentation, and that # the name(s) of the author(s) not be used in advertising or publicity # pertaining to distribution of the software without specific, written # prior permission. # # THE AUTHOR(S) DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, # INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN # NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY SPECIAL, INDIRECT OR # CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF # USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR # OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR # PERFORMANCE OF THIS SOFTWARE. # ---------------------------------------------------------------------- # python lib import os import sys import platform if sys.version_info >= (2,4): import subprocess # subprocess is introduced in python 2.4 import math import random import tempfile import tkSimpleDialog import tkMessageBox import tkFileDialog import tkColorChooser import Tkinter # pymol lib try: from pymol import cmd from pymol.cgo import * except ImportError: print 'Warning: pymol library cmd not found.' sys.exit(1) # external lib try: import Pmw except ImportError: print 'Warning: failed to import Pmw. Exit ...' sys.exit(1) VERBOSE = True ################# ## here we go ################# def __init__(self): """ DSSP and Stride plugin for PyMol """ self.menuBar.addmenuitem('Plugin', 'command', 'DSSP & Stride', label = 'DSSP & Stride', command = lambda s=self : DSSPPlugin(s)) ################# ## GUI related ################# class DSSPPlugin: def __init__(self, app): self.parent = app.root self.dialog = Pmw.Dialog(self.parent, buttons = ('Run DSSP', 'Run Stride', 'Update Color', 'Update ss', 'Exit'), title = 'DSSP and Stride Plugin for PyMOL', command = self.execute) Pmw.setbusycursorattributes(self.dialog.component('hull')) # parameters used by DSSP self.pymol_sel = Tkinter.StringVar() self.dssp_bin = Tkinter.StringVar() self.stride_bin = Tkinter.StringVar() self.dssp_rlt_dict = {} self.stride_rlt_dict = {} self.ss_asgn_prog = None # which program is used to assign ss self.sel_obj_list = [] # there may be more than one seletion or object # defined by self.pymol_sel # treat each selection and object separately if 'DSSP_BIN' not in os.environ and 'PYMOL_GIT_MOD' in os.environ: if sys.platform.startswith('linux') and platform.machine() == 'x86_32': initialdir_dssp = os.path.join(os.environ['PYMOL_GIT_MOD'],"DSSP","i86Linux2","dssp-2") os.environ['DSSP_BIN'] = initialdir_dssp elif sys.platform.startswith('linux') and platform.machine() == 'x86_64': initialdir_dssp = os.path.join(os.environ['PYMOL_GIT_MOD'],"DSSP","ia64Linux2","dssp-2") os.environ['DSSP_BIN'] = initialdir_dssp elif sys.platform.startswith('win'): initialdir_dssp = os.path.join(os.environ['PYMOL_GIT_MOD'],"DSSP","win32","dssp.exe") os.environ['DSSP_BIN'] = initialdir_dssp else: pass if 'DSSP_BIN' in os.environ: if VERBOSE: print 'Found DSSP_BIN in environmental variables', os.environ['DSSP_BIN'] self.dssp_bin.set(os.environ['DSSP_BIN']) else: if VERBOSE: print 'DSSP_BIN not found in environmental variables.' self.dssp_bin.set('') if 'STRIDE_BIN' not in os.environ and 'PYMOL_GIT_MOD' in os.environ: if sys.platform.startswith('linux') and platform.machine() == 'x86_32': initialdir_stride = os.path.join(os.environ['PYMOL_GIT_MOD'],"Stride","i86Linux2","stride") os.environ['STRIDE_BIN'] = initialdir_stride elif sys.platform.startswith('linux') and platform.machine() == 'x86_64': initialdir_stride = os.path.join(os.environ['PYMOL_GIT_MOD'],"Stride","ia64Linux2","stride") os.environ['STRIDE_BIN'] = initialdir_stride elif sys.platform.startswith('win'): initialdir_stride = os.path.join(os.environ['PYMOL_GIT_MOD'],"Stride","win32","stride.exe") os.environ['STRIDE_BIN'] = initialdir_stride else: pass if 'STRIDE_BIN' in os.environ: if VERBOSE: print 'Found STRIDE_BIN in environmental variables', os.environ['STRIDE_BIN'] self.stride_bin.set(os.environ['STRIDE_BIN']) else: if VERBOSE: print 'STRIDE_BIN not found in environmental variables.' self.stride_bin.set('') # DSSP visualization color # - H Alpha helix (4-12) # - G 3-10 helix # - I pi helix # # - E Extended strand # - B Isolated beta-bridge residue # # - T Turn # - S Bend # - - None # STRIDE does not have S and None, but it has two more # codes: 'b' same as 'B' and 'C' for coil self.DSSP_SSE_list = ['H','G','I', 'E','B','T','S','-'] # for the record of the order self.STRIDE_SSE_list = ['H','G','I', 'E','B','b','T','C'] # for the record of the order self.SSE_map = {'H':'H', 'G':'H', 'I':'H', 'E':'S', 'B':'S', 'T':'L', 'S':'L', '-':'L', 'b':'S', 'C':'L' } self.SSE_name = { 'H' : 'Alpha helix', 'G' : '3-10 helix', 'I' : 'Pi helix', 'E' : 'Extended strand', 'B' : 'Isolated beta-bridge', 'T' : 'Turn', 'S' : 'Bend', '-' : 'None', 'b' : 'Isolated beta-bridge', 'C' : 'Coil' } self.SSE_col_RGB = { 'H':(255, 0, 0), 'G':(255, 0,128), 'I':(255,170,170), 'E':(255,255, 0), 'B':(153,119, 85), 'T':( 0,255,255), 'S':(153,255,119), '-':(179,179,179), 'b':(153,119, 85), # same as 'B' 'C':( 0, 0,255) } self.SSE_col = {} for sse in self.SSE_col_RGB.keys(): self.SSE_col[sse] = '#%s%s%s' % (hex(self.SSE_col_RGB[sse][0])[2:].zfill(2), hex(self.SSE_col_RGB[sse][1])[2:].zfill(2), hex(self.SSE_col_RGB[sse][2])[2:].zfill(2)) self.SSE_res_dict = {} self.SSE_sel_dict = {} w = Tkinter.Label(self.dialog.interior(), # text = '\nDSSP Plugin for PyMOL\nHongbo Zhu, 2011.\n\nColor proteins according to the secondary structure determined by DSSP.', text = '\nDSSP and Stride Plugin for PyMOL\nby Hongbo Zhu, 2011\n', background = 'black', foreground = 'green' ) w.pack(expand = 1, fill = 'both', padx = 10, pady = 5) # make a few tabs within the dialog self.notebook = Pmw.NoteBook(self.dialog.interior()) self.notebook.pack(fill = 'both', expand=1, padx=10, pady=10) ###################### # Tab : Structure Tab ###################### page = self.notebook.add('Structure') self.notebook.tab('Structure').focus_set() group_struc = Tkinter.LabelFrame(page, text = 'Structure') group_struc.pack(fill='both', expand=True, padx=10, pady=5) pymol_sel_ent = Pmw.EntryField(group_struc, label_text='PyMOL selection/object:', labelpos='wn', entry_textvariable=self.pymol_sel ) dssp_bin_ent = Pmw.EntryField(group_struc, label_text='DSSP binary:', labelpos='wn', entry_textvariable=self.dssp_bin, entry_width=20) dssp_bin_but = Tkinter.Button(group_struc, text = 'Browse...', command = self.getDSSPBin) stride_bin_ent = Pmw.EntryField(group_struc, label_text='Stride binary:', labelpos='wn', entry_textvariable=self.stride_bin, entry_width=20) stride_bin_but = Tkinter.Button(group_struc, text = 'Browse...', command = self.getStrideBin) # arrange widgets using grid pymol_sel_ent.grid(sticky='we', row=0, column=0, columnspan=2, padx=5, pady=5) dssp_bin_ent.grid(sticky='we', row=1, column=0, padx=5, pady=1) dssp_bin_but.grid(sticky='we', row=1, column=1, padx=5, pady=1) stride_bin_ent.grid(sticky='we', row=2, column=0, padx=5, pady=1) stride_bin_but.grid(sticky='we', row=2, column=1, padx=5, pady=1) group_struc.columnconfigure(0, weight=9) group_struc.columnconfigure(1, weight=1) ###################### # Tab : Color Tab ###################### # H = alpha helix # G = 3-helix (3/10 helix) # I = 5 helix (pi helix) # E = extended strand, participates in beta ladder # B = residue in isolated beta-bridge # T = hydrogen bonded turn # S = bend # # H Alpha helix (4-12) # G 3-10 helix # I pi helix # E Strand # B Isolated beta-bridge residue # T Turn # S Bend # - None page = self.notebook.add('Color') group_sse_color = Tkinter.LabelFrame(page, text = 'Secondary Structure Element Color') group_sse_color.grid(sticky='eswn', row=0, column=0, padx=10, pady=5) # colors for DSSP surface H_col_lab = Tkinter.Label(group_sse_color, text='Alpha helix (H):') self.H_col_but = Tkinter.Button(group_sse_color, bg=self.SSE_col['H'], activebackground=self.SSE_col['H'], command = self.custermizeHColor) G_col_lab = Tkinter.Label(group_sse_color, text='3-10 helix (G):') self.G_col_but = Tkinter.Button(group_sse_color, bg=self.SSE_col['G'], activebackground=self.SSE_col['G'], command = self.custermizeGColor) I_col_lab = Tkinter.Label(group_sse_color, text='PI helix (I):') self.I_col_but = Tkinter.Button(group_sse_color, bg=self.SSE_col['I'], activebackground=self.SSE_col['G'], command = self.custermizeIColor) E_col_lab = Tkinter.Label(group_sse_color, text='Extended strand (E):') self.E_col_but = Tkinter.Button(group_sse_color, bg=self.SSE_col['E'], activebackground=self.SSE_col['E'], command = self.custermizeEColor) B_col_lab = Tkinter.Label(group_sse_color, text='Isolated beta-bridge (B):') self.B_col_but = Tkinter.Button(group_sse_color, bg=self.SSE_col['B'], activebackground=self.SSE_col['B'], command = self.custermizeBColor) T_col_lab = Tkinter.Label(group_sse_color, text='Turn (T):') self.T_col_but = Tkinter.Button(group_sse_color, bg=self.SSE_col['T'], activebackground=self.SSE_col['T'], command = self.custermizeTColor) S_col_lab = Tkinter.Label(group_sse_color, text='Bend (DSSP S):') self.S_col_but = Tkinter.Button(group_sse_color, bg=self.SSE_col['S'], activebackground=self.SSE_col['S'], command = self.custermizeSColor) N_col_lab = Tkinter.Label(group_sse_color, text='None (DSSP NA):') self.N_col_but = Tkinter.Button(group_sse_color, bg=self.SSE_col['-'], activebackground=self.SSE_col['-'], command = self.custermizeNColor) b_col_lab = Tkinter.Label(group_sse_color, text='Isolated beta-bridge (Stride b):') self.b_col_but = Tkinter.Button(group_sse_color, bg=self.SSE_col['b'], activebackground=self.SSE_col['b'], command = self.custermizebColor) C_col_lab = Tkinter.Label(group_sse_color, text='Coil (Stride C):') self.C_col_but = Tkinter.Button(group_sse_color, bg=self.SSE_col['C'], activebackground=self.SSE_col['C'], command = self.custermizeCColor) H_col_lab.grid(sticky='e', row=0, column=0, padx=5, pady=3) self.H_col_but.grid(sticky='we', row=0, column=1, padx=5, pady=3) G_col_lab.grid(sticky='e', row=1, column=0, padx=5, pady=3) self.G_col_but.grid(sticky='we', row=1, column=1, padx=5, pady=3) I_col_lab.grid(sticky='e', row=2, column=0, padx=5, pady=3) self.I_col_but.grid(sticky='we', row=2, column=1, padx=5, pady=3) E_col_lab.grid(sticky='e', row=0, column=2, padx=5, pady=3) self.E_col_but.grid(sticky='we', row=0, column=3, padx=5, pady=3) B_col_lab.grid(sticky='e', row=1, column=2, padx=5, pady=3) self.B_col_but.grid(sticky='we', row=1, column=3, padx=5, pady=3) T_col_lab.grid(sticky='e', row=0, column=4, padx=5, pady=3) self.T_col_but.grid(sticky='we', row=0, column=5, padx=5, pady=3) S_col_lab.grid(sticky='e', row=1, column=4, padx=5, pady=3) self.S_col_but.grid(sticky='we', row=1, column=5, padx=5, pady=3) N_col_lab.grid(sticky='e', row=2, column=4, padx=5, pady=3) self.N_col_but.grid(sticky='we', row=2, column=5, padx=5, pady=3) b_col_lab.grid(sticky='e', row=2, column=2, padx=5, pady=3) self.b_col_but.grid(sticky='we', row=2, column=3, padx=5, pady=3) C_col_lab.grid(sticky='e', row=3, column=4, padx=5, pady=3) self.C_col_but.grid(sticky='we', row=3, column=5, padx=5, pady=3) ###################### # Tab : About Tab ###################### page = self.notebook.add('About') group_about = Tkinter.LabelFrame(page, text = 'About DSSP and Stride Plugin for PyMOL') group_about.grid(sticky='we', row=0,column=0,padx=5,pady=3) about_plugin = """ Assign and color secondary structures using DSSP or Stride. by Hongbo Zhu Please cite this plugin if you use it in a publication. Hongbo Zhu. DSSP and Stride plugin for PyMOL, 2011, BIOTEC, TU Dresden. """ label_about = Tkinter.Label(group_about,text=about_plugin) label_about.grid(sticky='we', row=0, column=0, padx=5, pady=10) self.notebook.setnaturalsize() return def getDSSPBin(self): dssp_bin_fname = tkFileDialog.askopenfilename( title='DSSP Binary', initialdir='', filetypes=[('all','*')], parent=self.parent) if dssp_bin_fname: # if nonempty self.dssp_bin.set(dssp_bin_fname) return def getStrideBin(self): stride_bin_fname = tkFileDialog.askopenfilename( title='Stride Binary', initialdir='', filetypes=[('all','*')], parent=self.parent) if stride_bin_fname: # if nonempty self.stride_bin.set(stride_bin_fname) return def runDSSPOneObj(self, one_obj_sel): """ Run DSSP on only one object. @param one_obj_sel: the selection/object involving only one object @param type: string """ SSE_res = { 'H':{}, 'G':{}, 'I':{}, 'E':{}, 'B':{}, 'T':{}, 'S':{}, '-':{} } SSE_sel = { 'H':None, 'G':None, 'I':None, 'E':None, 'B':None, 'T':None, 'S':None, '-':None } pdb_fn = None pdb_os_fh, pdb_fn = tempfile.mkstemp(suffix='.pdb') # file os handle, file name os.close(pdb_os_fh) # DSSP 2.0.4 ignores all residues after 1st TER in the same chain v = cmd.get(name='pdb_use_ter_records') if v: cmd.set(name='pdb_use_ter_records', value=0) # do not insert TER into the pdb cmd.save(filename=pdb_fn, selection=one_obj_sel) if v: cmd.set(name='pdb_use_ter_records', value=v) # restore old value if VERBOSE: print 'Selection %s saved to %s.' % (one_obj_sel, pdb_fn) if pdb_fn is None: print 'WARNING: DSSP has no pdb file to work on!' return None print 'Running DSSP for %s ...' % (one_obj_sel,) dssp_sse_dict = {} if sys.version_info >= (2,4): dssp_proc = subprocess.Popen([self.dssp_bin.get(), pdb_fn], stdout=subprocess.PIPE, stderr=subprocess.STDOUT) dssp_stdout, dssp_stderr = dssp_proc.communicate() else: # use os.system + tempfile dssp_tmpout_os_fh, dssp_tmpout_fn = tempfile.mkstemp(suffix='.dssp') os.close(dssp_tmpout_os_fh) dssp_cmd = '%s %s > %s' % (self.dssp_bin.get(), pdb_fn, dssp_tmpout_fn) os.system(dssp_cmd) fh = open(dssp_tmpout_fn) dssp_stdout = ''.join(fh.readlines()) fh.close() sse_started = False for line in dssp_stdout.splitlines(): if line.startswith(' # RESIDUE'): sse_started = True continue elif line.startswith(' !!!'): sse_started = False continue elif sse_started: if len(line) < 10 or line[9] == ' ': continue ch,resname = line[11],line[13] residen,sscode = line[5:11].strip(),line[16] # residen = resnum+icode, col 10 is for icode if sscode == ' ': sscode = '-' k = (ch,resname,residen) dssp_sse_dict[k] = sscode self.dssp_rlt_dict[one_obj_sel] = dssp_sse_dict print 'Got SSE for %d residues.' % (len(self.dssp_rlt_dict[one_obj_sel]),) # group residues according to their SSE, and chain name for k in self.dssp_rlt_dict[one_obj_sel].keys(): #res = '/%s//%s/%d%s/' % (sel,k[0],k[1][1], k[1][2].strip()) # sel name, chain ID, res serial num, icode sse = self.dssp_rlt_dict[one_obj_sel][k] chn = k[0] res = k[2] if VERBOSE: print '(%s) and \"%s\"/%s/ sse=%s' % (str(one_obj_sel), chn.strip(), res, sse) SSE_res[sse].setdefault(chn,[]).append(res) self.SSE_res_dict[one_obj_sel] = SSE_res for sse in self.DSSP_SSE_list: sse_sel_name = self.selectSSE(one_obj_sel, sse) SSE_sel[sse] = sse_sel_name self.SSE_sel_dict[one_obj_sel] = SSE_sel print '\nNumber of residues with SSE element:' for sse in self.DSSP_SSE_list: num = sum([len(SSE_res[sse][chn]) for chn in SSE_res[sse]]) print '%20s (%s) : %5d' % (self.SSE_name[sse], sse, num) print # clean up pdb_fn and dssp_tmpout_fn created by tempfile.mkstemp() if os.path.isfile(pdb_fn): os.remove(pdb_fn) if sys.version_info < (2,4) and os.path.isfile(dssp_tmpout_fn): os.remove(dssp_tmpout_fn) return def runDSSP(self): """ @return: whether DSSP has been executed successfully @rtype: boolean """ # delete old results self.sel_obj_list = [] self.dssp_rlt_dict = {} self.SSE_res_dict = {} self.SSE_sel_dict = {} pdb_fn = None sel_name= None sel = self.pymol_sel.get() if len(sel) > 0: # if any pymol selection/object is specified # save the pymol selection/object in the tmp dir all_sel_names = cmd.get_names('all') # get names of all selections if sel in all_sel_names: if cmd.count_atoms(sel) == 0: err_msg = 'ERROR: The selection %s is empty.' % (sel,) print 'ERROR: %s' % (err_msg,) tkMessageBox.showinfo(title='ERROR', message=err_msg) return False else: sel_name = sel # no selection/object with the input name is found # we assume either a single-word selector or # some other selection-expression is used # NOTE: if more than one selection is selected, they should be # saved separately and SSE should be calculated for each # of the selections. else: print 'The selection/object you specified is not found.' print 'Your input will be interpreted as a selection-expression.' # check whether the selection is empty tmpsel = self.randomSeleName(prefix='your_sele_') cmd.select(tmpsel,sel) if cmd.count_atoms(tmpsel) == 0: cmd.delete(tmpsel) err_msg = 'ERROR: The selection %s is empty.' % (sel,) print 'ERROR: %s' % (err_msg,) tkMessageBox.showinfo(title='ERROR', message=err_msg) return False else: sel_name = tmpsel else: # what structure do you want DSSP to work on? err_msg = 'No PyMOL selection/object specified!' print 'ERROR: %s' % (err_msg,) tkMessageBox.showinfo(title='ERROR', message=err_msg) return False # each object in the selection is treated as an independent struc objlist = cmd.get_object_list(sel_name) self.ss_asgn_prog = 'DSSP' print 'Starting %s ...' % (self.ss_asgn_prog, ) for objname in objlist: self.sel_obj_list.append('%s and %s' % (sel_name, objname)) self.runDSSPOneObj(self.sel_obj_list[-1]) ## cmd.delete(tmpsel) return True def runStrideOneObj(self, one_obj_sel): """ Run Stride on only one object. @param one_obj_sel: the selection/object involving only one object @param type: string """ SSE_res = { 'H':{}, 'G':{}, 'I':{}, 'E':{}, 'B':{}, 'b':{}, 'T':{}, 'C':{} } SSE_sel = { 'H':None, 'G':None, 'I':None, 'E':None, 'B':None, 'b':None, 'T':None, 'C':None } pdb_fn = None pdb_os_fh, pdb_fn = tempfile.mkstemp(suffix='.pdb') # file os handle, file name os.close(pdb_os_fh) cmd.save(filename=pdb_fn, selection=one_obj_sel) if VERBOSE: print 'Selection %s saved to %s.' % (one_obj_sel, pdb_fn) if pdb_fn is None: print 'WARNING: Stride has no pdb file to work on!' return None print 'Running Stride for %s ...' % (one_obj_sel,) stride_sse_dict = {} if sys.version_info >= (2,4): stride_proc = subprocess.Popen([self.stride_bin.get(), pdb_fn], stdout=subprocess.PIPE, stderr=subprocess.STDOUT ) stride_stdout, stride_stderr = stride_proc.communicate() else: # use os.system + tempfile stride_tmpout_os_fh, stride_tmpout_fn = tempfile.mkstemp(suffix='.stride') os.close(stride_tmpout_os_fh) stride_cmd = '%s %s > %s' % (self.stride_bin.get(), pdb_fn, stride_tmpout_fn) os.system(stride_cmd) fh = open(stride_tmpout_fn) stride_stdout = ''.join(fh.readlines()) fh.close() for line in stride_stdout.splitlines(): if line.startswith('ASG'): resname,ch=line[5:8], line[9] # according to stride doc, col 12-15 are used for residue number # actually, resnum+icode is used in 12-15. # In addition, if residue number is 4-digit or longer, # the field 12-16 or more are used. if line[15] == ' ': # col 16 is not occupied residen, sscode = line[11:15].strip(),line[24] # residen = resnum+icode else: shift = line[15:].find(' ') # find where residen stops residen, sscode = line[11:15+shift].strip(),line[24+shift] k = (ch,resname,residen) stride_sse_dict[k] = sscode self.stride_rlt_dict[one_obj_sel] = stride_sse_dict print 'Got SSE for %d residues.' % (len(self.stride_rlt_dict[one_obj_sel]),) # group residues according to their SSE, and chain name for k in self.stride_rlt_dict[one_obj_sel].keys(): sse=self.stride_rlt_dict[one_obj_sel][k] chn = k[0] # this can be a space! res = k[2] if VERBOSE: print '(%s) and \"%s\"/%s/ sse=%s' % (str(one_obj_sel), chn.strip(), res, sse) SSE_res[sse].setdefault(chn,[]).append(res) self.SSE_res_dict[one_obj_sel] = SSE_res for sse in self.STRIDE_SSE_list: sse_sel_name = self.selectSSE(one_obj_sel, sse) SSE_sel[sse] = sse_sel_name self.SSE_sel_dict[one_obj_sel] = SSE_sel print '\nNumber of residues with SSE element:' for sse in self.STRIDE_SSE_list: num = sum([len(SSE_res[sse][chn]) for chn in SSE_res[sse]]) print '%20s (%s) : %5d' % (self.SSE_name[sse], sse, num) print # clean up pdb_fn and dssp_tmpout_fn created by tempfile.mkstemp() if os.path.isfile(pdb_fn): os.remove(pdb_fn) if sys.version_info < (2,4) and os.path.isfile(stride_tmpout_fn): os.remove(stride_tmpout_fn) return True def runStride(self): """ """ # delete old results self.sel_obj_list = [] self.stride_rlt_dict = {} self.SSE_res_dict = {} self.SSE_sel_dict = {} pdb_fn = None sel_name= None sel = self.pymol_sel.get() if len(sel) > 0: # if any pymol selection/object is specified all_sel_names = cmd.get_names('all') # get names of all selections if sel in all_sel_names: if cmd.count_atoms(sel) == 0: err_msg = 'ERROR: The selection %s is empty.' % (sel,) print 'ERROR: %s' % (err_msg,) tkMessageBox.showinfo(title='ERROR', message=err_msg) return False else: sel_name = sel # no selection/object with the input name is found # we assume either a single-word selector or # some other selection-expression is uesd else: print 'The selection/object you specified is not found.' print 'Your input will be interpreted as a selection-expression.' tmpsel = self.randomSeleName(prefix='your_sele_') cmd.select(tmpsel,sel) if cmd.count_atoms(tmpsel) == 0: cmd.delete(tmpsel) err_msg = 'ERROR: The selection %s is empty.' % (sel,) print 'ERROR: %s' % (err_msg,) tkMessageBox.showinfo(title='ERROR', message=err_msg) return False else: sel_name = tmpsel else: # what structure do you want Stride to work on? err_msg = 'No PyMOL selection/object specified!' print 'ERROR: %s' % (err_msg,) tkMessageBox.showinfo(title='ERROR', message=err_msg) return False # each object in the selection is treated as an independent struc objlist = cmd.get_object_list(sel_name) self.ss_asgn_prog = 'Stride' print 'Starting %s ...' % (self.ss_asgn_prog, ) for objname in objlist: self.sel_obj_list.append('%s and %s' % (sel_name, objname)) self.runStrideOneObj(self.sel_obj_list[-1]) return True def randomSeleName(self, prefix='sele',suffix=''): """ generate a random selection name. """ sel_list = cmd.get_names('all') sel_dict = dict(zip(sel_list, range(len(sel_list)))) sel_name = '%s%d%s' % (prefix, random.randint(1000,9999), suffix) while(sel_name in sel_dict): sel_name = '%s%d%s' % (prefix, random.randint(1000,9999), suffix) return sel_name def selectSSE(self, sel, sse): """ generate selector for selecting all residues having the given sse. return the selection name. """ #sel = self.pymol_sel.get() sel_list_chn = [] if VERBOSE: print '\nSelecting SSE %s ... \n' % (sse) for chn in self.SSE_res_dict[sel][sse]: # color one chain at a time if chn == ' ': chn_str = '-' else: chn_str = chn if VERBOSE: print 'Selecting SSE %s on chain %s ... \n' % (sse, chn) limit=150 # color every 150 residues sel_name_chn = self.randomSeleName(prefix='%s_%s_%s_' % ('_'.join(sel.split()),chn_str,sse)) if len(self.SSE_res_dict[sel][sse][chn]) < limit: #sel_expr = '/%s//%s/%s/' % (sel,chn.strip(), '+'.join(self.SSE_res[sse][chn])) # always quote chain name in case it is empty (otherwise sel misinterpreted) sel_expr = '(%s) and \"%s\"/%s/' % (sel,chn.strip(), '+'.join(self.SSE_res_dict[sel][sse][chn])) cmd.select(sel_name_chn, sel_expr) if VERBOSE: print 'select %s, %s' % (sel_name_chn, sel_expr) sel_list_chn.append(sel_name_chn) else: rn = len(self.SSE_res_dict[sel][sse][chn]) print 'total number of res with %s = %d' % (sse,rn) sz = int(math.ceil(rn/float(limit))) sel_list_seg = [] for i in xrange(sz): s,e = i*limit, min((i+1)*limit, rn) print s,e #sel_expr = '/%s//%s/%s/' % (sel,chn.strip(), '+'.join(self.SSE_res[sse][chn][s:e])) # always quote chain name in case it is empty (otherwise sel misinterpreted) sel_expr = '(%s) and \"%s\"/%s/' % (sel, chn.strip(), '+'.join(self.SSE_res_dict[sel][sse][chn][s:e])) sel_name_seg = self.randomSeleName(prefix='%s_%s_%s_tmp_' % ('_'.join(sel.split()),chn_str,sse)) cmd.select(sel_name_seg, sel_expr) if VERBOSE: print 'select %s, %s' % (sel_name_seg, sel_expr) sel_list_seg.append(sel_name_seg) sel_expr = ' or '.join(sel_list_seg) cmd.select(sel_name_chn, sel_expr) if VERBOSE: print 'select %s, %s' % (sel_name_chn, sel_expr) [cmd.delete(asel) for asel in sel_list_seg] sel_list_chn.append(sel_name_chn) if len(sel_list_chn) > 0: sel_name = self.randomSeleName(prefix='%s_%s_%s_' % ('_'.join(sel.split()), sse, self.ss_asgn_prog)) sel_expr = ' or '.join(sel_list_chn) cmd.select(sel_name,sel_expr) [cmd.delete(asel) for asel in sel_list_chn] else: print 'INFO: No residues are assigned to SSE \'%s\'.' % (sse,) sel_name = None return sel_name def updateColor(self): if self.ss_asgn_prog is None: err_msg = 'Run DSSP or Stride to assign secondary structures first!' print 'ERROR: %s' % (err_msg,) tkMessageBox.showinfo(title='ERROR', message=err_msg) else: print 'Update color for %s' % (self.pymol_sel.get()), print 'using secondary structure assignment by %s' % (self.ss_asgn_prog,) if self.ss_asgn_prog == 'DSSP': SSE_list = self.DSSP_SSE_list elif self.ss_asgn_prog == 'Stride': SSE_list = self.STRIDE_SSE_list for sse in SSE_list: # give color names cmd.set_color('%s_color'%(sse,), self.SSE_col_RGB[sse]) for sse in SSE_list: # color each SSE for sel_obj in self.sel_obj_list: if self.SSE_sel_dict[sel_obj][sse] is not None: cmd.color('%s_color'%(sse,), self.SSE_sel_dict[sel_obj][sse]) print 'color',self.SSE_sel_dict[sel_obj][sse],',',self.SSE_col_RGB[sse] else: print 'No residues with SSE \'%s\' to color.' % (sse,) return def updateSS(self): if self.ss_asgn_prog is None: err_msg = 'Run DSSP or Stride to assign secondary structures first!' print 'ERROR: %s' % (err_msg,) tkMessageBox.showinfo(title='ERROR', message=err_msg) else: print 'Update secondary structures for %s' % (self.pymol_sel.get()), print 'using secondary structure assignment by %s' % (self.ss_asgn_prog,) print 'SSE mapping: (H,G,I) ==> H; (E,B,b) ==> S; (T,S,-,C) ==> L' if self.ss_asgn_prog == 'DSSP': SSE_list = self.DSSP_SSE_list elif self.ss_asgn_prog == 'Stride': SSE_list = self.STRIDE_SSE_list for sse in SSE_list: for sel_obj in self.sel_obj_list: if self.SSE_sel_dict[sel_obj][sse] is not None: cmd.alter(self.SSE_sel_dict[sel_obj][sse], 'ss=\'%s\''% (self.SSE_map[sse],)) print 'alter %s, ss=%s' % (self.SSE_sel_dict[sel_obj][sse], self.SSE_map[sse]) else: print 'No residue with SSE %s to update ss.' % (sse,) # show cartoon for the input selection, and rebuild cmd.show('cartoon',self.pymol_sel.get()) cmd.rebuild(self.pymol_sel.get()) return def custermizeHColor(self): self.custermizeSSEColor('H') def custermizeGColor(self): self.custermizeSSEColor('G') def custermizeIColor(self): self.custermizeSSEColor('I') def custermizeEColor(self): self.custermizeSSEColor('E') def custermizeBColor(self): self.custermizeSSEColor('B') def custermizeTColor(self): self.custermizeSSEColor('T') def custermizeSColor(self): self.custermizeSSEColor('S') def custermizeNColor(self): self.custermizeSSEColor('-') def custermizebColor(self): self.custermizeSSEColor('b') def custermizeCColor(self): self.custermizeSSEColor('C') def custermizeSSEColor(self,sse): SSE_col_but = { 'H':self.H_col_but, 'G':self.G_col_but, 'I':self.I_col_but, 'E':self.E_col_but, 'B':self.B_col_but, 'T':self.T_col_but, 'S':self.S_col_but, '-':self.N_col_but, 'b':self.b_col_but, 'C':self.C_col_but, } try: color_tuple, color = tkColorChooser.askcolor(color=self.SSE_col[sse]) if color_tuple is not None and color is not None: self.SSE_col_RGB[sse] = color_tuple self.SSE_col[sse] = color SSE_col_but[sse]['bg']=self.SSE_col[sse] SSE_col_but[sse]['activebackground']=self.SSE_col[sse] SSE_col_but[sse].update() except Tkinter._tkinter.TclError: print 'Old color (%s) will be used.' % (self.mesh_col) def execute(self, butcmd): """ Run the cmd represented by the botton clicked by user. """ if butcmd == 'OK': print 'is everything OK?' elif butcmd == 'Run DSSP': rtn = self.runDSSP() if rtn and VERBOSE: print 'Done with DSSP!' elif butcmd == 'Run Stride': rtn = self.runStride() if rtn and VERBOSE: print 'Done with Stride!' elif butcmd == 'Update Color': self.updateColor() elif butcmd == 'Update ss': self.updateSS() elif butcmd == 'Exit': print 'Exiting DSSP and Stride Plugin ...' if __name__ == '__main__': self.parent.destroy() else: self.dialog.withdraw() print 'Done.' else: print 'Exiting DSSP and Stride Plugin because of unknown button click ...' self.dialog.withdraw() print 'Done.' def quit(self): self.dialog.destroy() ############################################# # # # Create demo in root window for testing. # # ############################################## if __name__ == '__main__': class App: def my_show(self,*args,**kwargs): pass app = App() app.root = Tkinter.Tk() Pmw.initialise(app.root) app.root.title('It seems to work!') widget = DSSPPlugin(app) app.root.mainloop()