Exemple #1
0
nonbondedx = {}
threebody = {}
if kh == 1:
    khmap = {}

#print meta_crd[chaini]
import time
time_a = time.time()
NSFAC = 1.0
disulfides = disulf_str.split(":")
#nresprot = 0
for i in range(nchain):
    chaini = chains[i]
    print chaini
    #print meta_crd[chaini][142]
    bb_bonds = go_lib.calc_bonds(meta_crd[chaini], link)
    if (defbon == 1 or len(sequence) > 0):
        bb_bonds = map(lambda x: (x[0], x[1], go_lib.std_bond), bb_bonds)

    bb_angles = go_lib.calc_angles(meta_crd[chaini], link, stata)
    bb_dihedrals = go_lib.setup_dihe(meta_crd[chaini], link, fixalpha,
                                     zerodihe, nativedihe)
    nonbondedx[chaini] = {}
    if kh == 1:
        khmap[chaini] = {}
    #nonbonded[chaini][chaini],tmp_nsfac = go_lib.calc_ncon_intra(meta_crd[chaini],tfmap[chaini][chaini],ngdist,gamma,geomh,fixrep)
    if (aacut < 0.0):  # do Karanicolas&Brooks
        nonbondedx[chaini][chaini] = go_lib.calc_ncon_intra(
            meta_crd[chaini], ngdist, gamma, geomh, fixrep)
    else:
        nonbondedx[chaini][chaini] = go_lib.calc_ncon_intra_simplecut(meta_crd[chaini], ngdist, \
Exemple #2
0
        nres = len(xyz[c])
        for i in range(1, nres + 1):
            idx += 1
            name = meta_crd[c][i]["name"]
            mass = go_lib.massmap[name]
            residues.append(("G%i" % (idx), mass))

go_lib.write_topology(outp_base + "_top.inp", residues, key)

# calculate parameters
# ======================================================================

link = 0
eps_res = 0.0054 * Tf

bonds_a = go_lib.calc_bonds(meta_crd[chains[0]], link)
bonds_b = go_lib.calc_bonds(meta_crd[chains[1]], link)
angles_a = go_lib.calc_angles(meta_crd[chains[0]], link)
angles_b = go_lib.calc_angles(meta_crd[chains[1]], link)
dihedrals_a = go_lib.setup_dihe(meta_crd[chains[0]], link)
dihedrals_b = go_lib.setup_dihe(meta_crd[chains[1]], link)
nonbonded_a = go_lib.calc_ncon_intra(meta_crd[chains[0]], ngdist, gamma)
nonbonded_b = go_lib.calc_ncon_intra(meta_crd[chains[1]], ngdist, gamma)
nonbonded_ab = go_lib.calc_ncon_inter(meta_crd[chains[0]], meta_crd[chains[1]],
                                      ngdist, gamma)
if symm:
    bonds = go_lib.average_bonded(bonds_a, bonds_b)
    angles = go_lib.average_bonded(angles_a, angles_b)
    nonbonded = go_lib.average_nonbonded_intra(nonbonded_a, nonbonded_b)
    nonbonded_ab_sym = go_lib.symmetrize_nb(nonbonded_ab, nres_tot)
    dihedrals = dihedrals_a
Exemple #3
0
		for j in range(i+1,nchain):
			chainj = chains[j]
			tfmap[chaini][chainj] = tfbb

# new ----------------------------------------------
bonds = {}
angles = {}
dihedrals = {}
nonbonded = {}
threebody ={}

NSFAC = 1.0
disulfides = disulf_str.split(":")
for i in range(nchain):
	chaini = chains[i]
	bb_bonds = go_lib.calc_bonds(meta_crd[chaini],link)
	if (defbon==1 or len(sequence)>0):
		bb_bonds = map(lambda x: (x[0],x[1],go_lib.std_bond), bb_bonds)

	bb_angles = go_lib.calc_angles(meta_crd[chaini],link,stata)
	bb_dihedrals = go_lib.setup_dihe(meta_crd[chaini],link)
	nonbonded[chaini] = {}
	#nonbonded[chaini][chaini],tmp_nsfac = go_lib.calc_ncon_intra(meta_crd[chaini],tfmap[chaini][chaini],ngdist,gamma,geomh,fixrep)
	nonbonded[chaini][chaini] = go_lib.calc_ncon_intra(meta_crd[chaini],ngdist,gamma,geomh,fixrep)
	#
	# include disulfides if necc...
	clen = len(chaini)
	my_disulfides = map(lambda x: x[clen:], filter(lambda x: x.find(chaini)==0,disulfides))
	#
	if len(my_disulfides)>0:
		ds_bonds, ds_angles, ds_dihedrals = go_lib.calc_disulf_bonded(meta_crd[chaini],tfbb,my_disulfides)
go_lib.write_topology(outp_base + "_top.inp", residues, key)

# calculate parameters
# ======================================================================

link = 0
eps_res = 0.0054 * Tf

bonds = {}
angles = {}
dihedrals = {}
nonbonded = {}

for i in range(nchain):
    chaini = chains[i]
    bonds[chaini] = go_lib.calc_bonds(meta_crd[chaini], link)
    angles[chaini] = go_lib.calc_angles(meta_crd[chaini], link)
    dihedrals[chaini] = go_lib.setup_dihe(meta_crd[chaini], link)
    nonbonded[chaini] = {}
    nonbonded[chaini][chaini] = go_lib.calc_ncon_intra(meta_crd[chaini],
                                                       ngdist, gamma)
    for j in range(i + 1, nchain):
        chainj = chains[j]
        nonbonded[chaini][chainj] = go_lib.calc_ncon_inter(
            meta_crd[chaini], meta_crd[chainj], ngdist, gamma)

#bonds = go_lib.average_bonded_list(bonds)

#print nonbonded.keys()
#print nonbonded['A'.keys()
#print nonbonded.keys()