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MACCS.txt from Open Babel
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#Comments after SMARTS
# Extracted from RDKit r1553 Nov 2010 rdkit/Chem/MACCSKeys.py
#
# Copyright (C) 2001-2008 greg Landrum and Rational Discovery LLC
#
# @@ All Rights Reserved @@
# This file is part of the RDKit.
# The contents are covered by the terms of the BSD license
# which is included in the file license.txt, found at the root
# of the RDKit source tree.
#
# SMARTS definitions for the publically available MACCS keys
# I compared the MACCS fingerprints generated here with those from two
# other packages (not MDL, unfortunately). Of course there are
# disagreements between the various fingerprints still, but I think
# these definitions work pretty well. Some notes:
# 1) most of the differences have to do with aromaticity
# 2) there's a discrepancy sometimes because the current RDKit
# definitions do not require multiple matches to be distinct. e.g. the
# SMILES C(=O)CC(=O) can match the (hypothetical) key O=CC twice in my
# definition. It's not clear to me what the correct behavior is.
# 3) Some keys are not fully defined in the MDL documentation
# 4) Two keys, 125 and 166, have to be done outside of SMARTS.
# 5) Key 1 (ISOTOPE) isn't defined
# these are SMARTS patterns corresponding to the MDL MACCS keys
1:('?',0), # ISOTOPE
#2:('[#103,#104,#105,#106,#107,#106,#109,#110,#111,#112]',0), # ISOTOPE Not complete
2:('[#103,#104]',0), # ISOTOPE Not complete
3:('[Ge,As,Se,Sn,Sb,Te,Tl,Pb,Bi]',0), # Group IVa,Va,VIa Periods 4-6 (Ge...) *NOTE* spec wrong
4:('[Ac,Th,Pa,U,Np,Pu,Am,Cm,Bk,Cf,Es,Fm,Md,No,Lr]',0), # actinide
5:('[Sc,Ti,Y,Zr,Hf]',0), # Group IIIB,IVB (Sc...) *NOTE* spec wrong
6:('[La,Ce,Pr,Nd,Pm,Sm,Eu,Gd,Tb,Dy,Ho,Er,Tm,Yb,Lu]',0), # Lanthanide
7:('[V,Cr,Mn,Nb,Mo,Tc,Ta,W,Re]',0), # Group VB,VIB,VIIB (V...) *NOTE* spec wrong
8:('[!#6;!#1]1~*~*~*~1',0), # QAAA@1
9:('[Fe,Co,Ni,Ru,Rh,Pd,Os,Ir,Pt]',0), # Group VIII (Fe...)
10:('[Be,Mg,Ca,Sr,Ba,Ra]',0), # Group IIa (Alkaline earth)
11:('*1~*~*~*~1',0), # 4M Ring
12:('[Cu,Zn,Ag,Cd,Au,Hg]',0), # Group IB,IIB (Cu..)
13:('[#8]~[#7](~[#6])~[#6]',0), # ON(C)C
14:('[#16]-[#16]',0), # S-S
15:('[#8]~[#6](~[#8])~[#8]',0), # OC(O)O
16:('[!#6;!#1]1~*~*~1',0), # QAA@1
17:('[#6]#[#6]',0), #CTC
18:('[B,Al,Ga,In,Tl]',0), # Group IIIA (B...) *NOTE* spec wrong
19:('*1~*~*~*~*~*~*~1',0), # 7M Ring
20:('[Si]',0), #Si
21:('[#6]=[#6](~[!#6;!#1])~[!#6;!#1]',0), # C=C(Q)Q
22:('*1~*~*~1',0), # 3M Ring
23:('[#7]~[#6](~[#8])~[#8]',0), # NC(O)O
24:('[#7]-[#8]',0), # N-O
25:('[#7]~[#6](~[#7])~[#7]',0), # NC(N)N
26:('[#6]=;@[#6](@*)@*',0), # C$=C($A)$A
27:('[I]',0), # I
28:('[!#6;!#1]~[CH2]~[!#6;!#1]',0), # QCH2Q
29:('[#15]',0),# P
30:('[#6]~[!#6;!#1](~[#6])(~[#6])~*',0), # CQ(C)(C)A
31:('[!#6;!#1]~[F,Cl,Br,I]',0), # QX
32:('[#6]~[#16]~[#7]',0), # CSN
33:('[#7]~[#16]',0), # NS
34:('[CH2]=*',0), # CH2=A
35:('[Li,Na,K,Rb,Cs,Fr]',0), # Group IA (Alkali Metal)
36:('[#16R]',0), # S Heterocycle
37:('[#7]~[#6](~[#8])~[#7]',0), # NC(O)N
38:('[#7]~[#6](~[#6])~[#7]',0), # NC(C)N
39:('[#8]~[#16](~[#8])~[#8]',0), # OS(O)O
40:('[#16]-[#8]',0), # S-O
41:('[#6]#[#7]',0), # CTN
42:('F',0), # F
43:('[!C;!c;!#1;!H0]~*~[!C;!c;!#1;!H0]',0), # QHAQH
44:('[!#1;!#6;!#7;!#8;!#9;!#14;!#15;!#16;!#17;!#35;!#53]',0), # OTHER
45:('[#6]=[#6]~[#7]',0), # C=CN
46:('Br',0), # BR
47:('[#16]~*~[#7]',0), # SAN
48:('[#8]~[!#6;!#1](~[#8])(~[#8])',0), # OQ(O)O
49:('[!+0]',0), # CHARGE
50:('[#6]=[#6](~[#6])~[#6]',0), # C=C(C)C
51:('[#6]~[#16]~[#8]',0), # CSO
52:('[#7]~[#7]',0), # NN
53:('[!#6;!#1;!H0]~*~*~*~[!#6;!#1;!H0]',0), # QHAAAQH
54:('[!#6;!#1;!H0]~*~*~[!#6;!#1;!H0]',0), # QHAAQH
55:('[#8]~[#16]~[#8]',0), #OSO
56:('[#8]~[#7](~[#8])~[#6]',0), # ON(O)C
57:('[#8R]',0), # O Heterocycle
58:('[!#6;!#1]~[#16]~[!#6;!#1]',0), # QSQ
59:('[#16]!:*:*',0), # Snot%A%A
60:('[#16]=[#8]',0), # S=O
61:('*~[#16](~*)~*',0), # AS(A)A
62:('*@*!@*@*',0), # A$!A$A
63:('[#7]=[#8]',0), # N=O
64:('*@*!@[#16]',0), # A$A!S
65:('c:n',0), # C%N
66:('[#6]~[#6](~[#6])(~[#6])~*',0), # CC(C)(C)A
67:('[!#6;!#1]~[#16]',0), # QS
68:('[!#6;!#1;!H0]~[!#6;!#1;!H0]',0), # QHQH (&...) FIX: incomplete definition
69:('[!#6;!#1]~[!#6;!#1;!H0]',0), # QQH
70:('[!#6;!#1]~[#7]~[!#6;!#1]',0), # QNQ
71:('[#7]~[#8]',0), # NO
72:('[#8]~*~*~[#8]',0), # OAAO
73:('[#16]=*',0), # S=A
74:('[CH3]~*~[CH3]',0), # CH3ACH3
75:('*!@[#7]@*',0), # A!N$A
76:('[#6]=[#6](~*)~*',0), # C=C(A)A
77:('[#7]~*~[#7]',0), # NAN
78:('[#6]=[#7]',0), # C=N
79:('[#7]~*~*~[#7]',0), # NAAN
80:('[#7]~*~*~*~[#7]',0), # NAAAN
81:('[#16]~*(~*)~*',0), # SA(A)A
82:('*~[CH2]~[!#6;!#1;!H0]',0), # ACH2QH
83:('[!#6;!#1]1~*~*~*~*~1',0), # QAAAA@1
84:('[NH2]',0), #NH2
85:('[#6]~[#7](~[#6])~[#6]',0), # CN(C)C
86:('[C;H2,H3][!#6;!#1][C;H2,H3]',0), # CH2QCH2
87:('[F,Cl,Br,I]!@*@*',0), # X!A$A
88:('[#16]',0), # S
89:('[#8]~*~*~*~[#8]',0), # OAAAO
90:('[$([!#6;!#1;!H0]~*~*~[CH2]~*),$([!#6;!#1;!H0;R]1@[R]@[R]@[CH2;R]1),$([!#6;!#1;!H0]~[R]1@[R]@[CH2;R]1)]',0), # QHAACH2A
91:('[$([!#6;!#1;!H0]~*~*~*~[CH2]~*),$([!#6;!#1;!H0;R]1@[R]@[R]@[R]@[CH2;R]1),$([!#6;!#1;!H0]~[R]1@[R]@[R]@[CH2;R]1),$([!#6;!#1;!H0]~*~[R]1@[R]@[CH2;R]1)]',0), # QHAAACH2A
92:('[#8]~[#6](~[#7])~[#6]',0), # OC(N)C
93:('[!#6;!#1]~[CH3]',0), # QCH3
94:('[!#6;!#1]~[#7]',0), # QN
95:('[#7]~*~*~[#8]',0), # NAAO
96:('*1~*~*~*~*~1',0), # 5 M ring
97:('[#7]~*~*~*~[#8]',0), # NAAAO
98:('[!#6;!#1]1~*~*~*~*~*~1',0), # QAAAAA@1
99:('[#6]=[#6]',0), # C=C
100:('*~[CH2]~[#7]',0), # ACH2N
101:('[$([R]@1@[R]@[R]@[R]@[R]@[R]@[R]@[R]1),$([R]@1@[R]@[R]@[R]@[R]@[R]@[R]@[R]@[R]1),$([R]@1@[R]@[R]@[R]@[R]@[R]@[R]@[R]@[R]@[R]1),$([R]@1@[R]@[R]@[R]@[R]@[R]@[R]@[R]@[R]@[R]@[R]1),$([R]@1@[R]@[R]@[R]@[R]@[R]@[R]@[R]@[R]@[R]@[R]@[R]1),$([R]@1@[R]@[R]@[R]@[R]@[R]@[R]@[R]@[R]@[R]@[R]@[R]@[R]1),$([R]@1@[R]@[R]@[R]@[R]@[R]@[R]@[R]@[R]@[R]@[R]@[R]@[R]@[R]1)]',0), # 8M Ring or larger. This only handles up to ring sizes of 14
102:('[!#6;!#1]~[#8]',0), # QO
103:('Cl',0), # CL
104:('[!#6;!#1;!H0]~*~[CH2]~*',0), # QHACH2A
105:('*@*(@*)@*',0), # A$A($A)$A
106:('[!#6;!#1]~*(~[!#6;!#1])~[!#6;!#1]',0), # QA(Q)Q
107:('[F,Cl,Br,I]~*(~*)~*',0), # XA(A)A
108:('[CH3]~*~*~*~[CH2]~*',0), # CH3AAACH2A
109:('*~[CH2]~[#8]',0), # ACH2O
110:('[#7]~[#6]~[#8]',0), # NCO
111:('[#7]~*~[CH2]~*',0), # NACH2A
112:('*~*(~*)(~*)~*',0), # AA(A)(A)A
113:('[#8]!:*:*',0), # Onot%A%A
114:('[CH3]~[CH2]~*',0), # CH3CH2A
115:('[CH3]~*~[CH2]~*',0), # CH3ACH2A
116:('[$([CH3]~*~*~[CH2]~*),$([CH3]~*1~*~[CH2]1)]',0), # CH3AACH2A
117:('[#7]~*~[#8]',0), # NAO
118:('[$(*~[CH2]~[CH2]~*),$(*1~[CH2]~[CH2]1)]',1), # ACH2CH2A > 1
119:('[#7]=*',0), # N=A
120:('[!#6;R]',1), # Heterocyclic atom > 1 (&...) FIX: incomplete definition
121:('[#7;R]',0), # N Heterocycle
122:('*~[#7](~*)~*',0), # AN(A)A
123:('[#8]~[#6]~[#8]',0), # OCO
124:('[!#6;!#1]~[!#6;!#1]',0), # QQ
125:('?',0), # Aromatic Ring > 1
126:('*!@[#8]!@*',0), # A!O!A
127:('*@*!@[#8]',1), # A$A!O > 1 (&...) FIX: incomplete definition
128:('[$(*~[CH2]~*~*~*~[CH2]~*),$([R]1@[CH2;R]@[R]@[R]@[R]@[CH2;R]1),$(*~[CH2]~[R]1@[R]@[R]@[CH2;R]1),$(*~[CH2]~*~[R]1@[R]@[CH2;R]1)]',0), # ACH2AAACH2A
129:('[$(*~[CH2]~*~*~[CH2]~*),$([R]1@[CH2]@[R]@[R]@[CH2;R]1),$(*~[CH2]~[R]1@[R]@[CH2;R]1)]',0), # ACH2AACH2A
130:('[!#6;!#1]~[!#6;!#1]',1), # QQ > 1 (&...) FIX: incomplete definition
131:('[!#6;!#1;!H0]',1), # QH > 1
132:('[#8]~*~[CH2]~*',0), # OACH2A
133:('*@*!@[#7]',0), # A$A!N
134:('[F,Cl,Br,I]',0), # X (HALOGEN)
135:('[#7]!:*:*',0), # Nnot%A%A
136:('[#8]=*',1), # O=A>1
137:('[!C;!c;R]',0), # Heterocycle
138:('[!#6;!#1]~[CH2]~*',1), # QCH2A>1 (&...) FIX: incomplete definition
139:('[O;!H0]',0), # OH
140:('[#8]',3), # O > 3 (&...) FIX: incomplete definition
141:('[CH3]',2), # CH3 > 2 (&...) FIX: incomplete definition
142:('[#7]',1), # N > 1
143:('*@*!@[#8]',0), # A$A!O
144:('*!:*:*!:*',0), # Anot%A%Anot%A
145:('*1~*~*~*~*~*~1',1), # 6M ring > 1
146:('[#8]',2), # O > 2
147:('[$(*~[CH2]~[CH2]~*),$([R]1@[CH2;R]@[CH2;R]1)]',0), # ACH2CH2A
148:('*~[!#6;!#1](~*)~*',0), # AQ(A)A
149:('[C;H3,H4]',1), # CH3 > 1
150:('*!@*@*!@*',0), # A!A$A!A
151:('[#7;!H0]',0), # NH
152:('[#8]~[#6](~[#6])~[#6]',0), # OC(C)C
153:('[!#6;!#1]~[CH2]~*',0), # QCH2A
154:('[#6]=[#8]',0), # C=O
155:('*!@[CH2]!@*',0), # A!CH2!A
156:('[#7]~*(~*)~*',0), # NA(A)A
157:('[#6]-[#8]',0), # C-O
158:('[#6]-[#7]',0), # C-N
159:('[#8]',1), # O>1
160:('[C;H3,H4]',0), #CH3
161:('[#7]',0), # N
162:('a',0), # Aromatic
163:('*1~*~*~*~*~*~1',0), # 6M Ring
164:('[#8]',0), # O
165:('[R]',0), # Ring
166:('?',0), # Fragments FIX: this can't be done in SMARTS
# obabel -:"CNO" -oftp -xs
# 24: N-O 68: QHQH (&...) 69: QQH 71: NO 93: QCH3 94: QN 102: QO
# 124: QQ 131: QH > 1 *2 139: OH 151: NH 158: C-N 160: CH3 161: N 164: O