Contacts of the helix formed by residues 47 - 76 (chain C) in PDB entry 1O9R
Residue contacts within the protein are
derived with the CSU software (Sobolev V., Sorokine A.,
Prilusky J., Abola E.E. and Edelman M. (1999) Automated
analysis of interatomic contacts in proteins.
Bioinformatics, 15, 327-332). A
short description of the analytical approach
is given at the end of the page.
Note:
Non-standard 3 letter residue
codes indicate a heterogroup. To identify
and analyse, use LPC software
Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC - hydrophobic-hydrophilic contact (destabilizing contact)
+/- - indicates presence/absence of a specific contacts
* - indicates residues forming contacts by their side chain
(including CA atoms)
Residues in contact with GLN 47 (chain C).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
46B PRO* 3.2 49.6 - - - +
47B GLN* 4.8 6.3 - - + +
45C GLY 3.1 0.4 + - - -
46C PRO* 1.3 97.8 - - - +
48C PHE* 1.3 66.1 + - - +
49C ILE* 3.3 2.7 + - - -
50C ALA* 3.4 10.1 + - + +
51C VAL* 3.2 28.9 + - + +
103C ILE* 3.5 26.8 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with PHE 48 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
40C HIS 4.6 0.9 - - - -
41C TRP 5.2 4.0 - - - -
43C LEU* 3.3 48.5 - - + +
44C LYS* 4.7 1.8 - - + -
45C GLY 3.0 20.6 + - - +
46C PRO 3.3 2.6 + - - -
47C GLN* 1.3 77.1 - - - +
49C ILE* 1.4 87.5 + - + +
51C VAL* 4.0 0.7 - - - +
52C HIS* 2.8 63.6 + + - +
103C ILE* 3.4 8.9 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ILE 49 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
47C GLN 3.5 0.8 - - - -
48C PHE* 1.4 98.3 - - + +
50C ALA* 1.4 64.7 + - + +
52C HIS* 3.6 9.1 - - + +
53C GLU* 2.9 59.9 + - + +
----------------------------------------------------------
Back to top of page
Residues in contact with ALA 50 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
47B GLN* 6.1 1.6 - - + -
49B ILE* 3.6 26.2 - - + +
50B ALA* 4.4 17.7 - - + -
47C GLN* 3.4 10.9 + - + +
48C PHE 3.3 0.8 - - - -
49C ILE* 1.4 86.5 - - + +
51C VAL* 1.3 59.4 + - + +
53C GLU* 3.9 4.7 - - - +
54C LEU* 3.0 28.8 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with VAL 51 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
49B ILE* 5.1 0.7 - - - -
43C LEU* 3.5 25.1 - - + -
47C GLN* 3.2 27.3 + - + +
50C ALA* 1.3 75.9 - - + +
52C HIS* 1.3 67.3 + - - +
54C LEU* 3.2 8.8 + - + +
55C LEU* 3.0 44.0 + - + +
103C ILE* 4.3 13.0 - - + -
106C HIS* 6.5 0.2 - - + -
107C LEU* 4.5 18.4 - - + -
110C LEU* 5.8 1.1 - - + -
154C LEU* 5.9 1.3 - - + -
157C HIS* 4.2 26.9 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with HIS 52 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
40C HIS* 2.8 84.6 + + - -
41C TRP* 4.8 5.6 - + - -
43C LEU* 3.9 8.6 - - + +
48C PHE* 2.8 49.1 + + + +
49C ILE* 3.6 17.7 - - + +
51C VAL* 1.3 79.4 - - - +
53C GLU* 1.4 67.2 + - + +
55C LEU* 3.4 8.3 + - - +
56C ASP* 3.5 1.8 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with GLU 53 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
49C ILE* 2.9 45.6 + - + +
50C ALA* 4.1 4.5 - - - +
52C HIS* 1.4 78.9 - - + +
54C LEU* 1.3 67.5 + - - +
56C ASP* 3.1 19.2 + - - +
57C THR* 3.4 11.3 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 54 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
49B ILE* 4.1 28.3 - - + -
53B GLU* 5.2 3.6 - - - +
50C ALA 3.0 18.5 + - - +
51C VAL* 3.2 10.5 + - + +
53C GLU* 1.3 76.5 - - - +
55C LEU* 1.4 64.7 + - + +
57C THR* 3.0 24.5 + - + +
58C PHE* 3.1 48.7 + - + -
153C PHE* 3.9 22.2 - - + +
154C LEU* 5.4 4.5 - - + -
157C HIS* 4.1 21.3 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 55 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
36C THR* 3.2 25.5 - - + +
37C LYS* 6.4 0.2 - - - -
39C ALA* 4.0 13.7 - - + -
40C HIS* 3.7 36.1 - - + +
43C LEU* 4.7 4.0 - - + -
51C VAL* 3.0 36.4 + - + +
52C HIS 3.8 4.9 - - - +
53C GLU 3.2 0.4 - - - -
54C LEU* 1.4 80.3 - - + +
56C ASP* 1.3 58.4 + - - +
58C PHE* 3.3 25.5 + - + -
59C ARG* 3.0 23.9 + - - +
106C HIS* 6.1 0.2 - - + -
110C LEU* 3.9 22.9 - - + -
114C TYR* 5.1 0.4 - - + +
154C LEU* 4.5 5.4 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with ASP 56 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
37C LYS* 2.7 32.9 + - - +
40C HIS* 3.0 31.7 + - - -
52C HIS 3.5 2.0 + - - -
53C GLU* 3.1 13.7 + - - +
55C LEU* 1.3 75.9 - - - +
57C THR* 1.3 64.7 + - - +
59C ARG* 3.3 4.8 + - - +
60C THR* 3.1 25.3 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with THR 57 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
53C GLU 3.4 7.5 + - - -
54C LEU* 3.0 18.0 + - + +
56C ASP* 1.3 78.3 - - - +
58C PHE* 1.3 67.5 + - + +
60C THR* 3.3 8.6 + - - -
61C GLN* 3.2 41.2 + - + +
----------------------------------------------------------
Back to top of page
Residues in contact with PHE 58 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
36C THR* 4.1 0.4 - - + -
54C LEU* 3.1 49.4 + - + -
55C LEU* 3.6 20.2 - - + +
56C ASP 3.3 0.2 - - - -
57C THR* 1.3 81.0 - - + +
59C ARG* 1.3 58.6 + - - +
61C GLN* 3.1 13.3 + - - +
62C LEU* 2.9 33.1 + - - +
114C TYR* 3.3 31.0 - + + +
150C SER* 3.5 44.4 - - - +
153C PHE* 4.0 11.7 - + + -
154C LEU* 3.7 30.1 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with ARG 59 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
33C ALA* 3.0 44.6 + - - +
34C LEU* 4.1 15.9 - - - +
36C THR* 4.0 11.6 - - + +
37C LYS* 3.5 39.7 - - + +
55C LEU 3.0 16.7 + - - +
56C ASP* 3.7 7.0 - - - +
57C THR 3.3 0.2 - - - -
58C PHE* 1.3 77.3 - - - +
60C THR* 1.3 59.1 + - - +
62C LEU* 3.2 4.5 + - - +
63C ASP* 2.8 62.0 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with THR 60 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
56C ASP 3.1 14.0 + - - -
57C THR* 3.5 12.0 - - - -
58C PHE 3.2 0.2 - - - -
59C ARG* 1.3 77.6 - - - +
61C GLN* 1.3 62.3 + - + +
63C ASP* 3.2 12.1 + - + +
64C ASN* 3.0 38.9 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with GLN 61 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
57C THR* 3.2 33.3 + - + +
58C PHE* 3.1 11.2 + - - +
60C THR* 1.3 76.9 - - + +
62C LEU* 1.3 60.5 + - + +
64C ASN* 3.2 9.0 + - - +
65C HIS* 2.9 45.1 + - + -
146C ASP* 3.7 28.9 + - + +
150C SER* 3.5 20.6 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 62 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
29C VAL* 3.7 24.7 - - + +
32C LEU* 3.8 24.0 - - + -
33C ALA* 3.7 33.2 - - + +
36C THR* 3.7 12.6 - - - +
58C PHE 2.9 18.0 + - - +
59C ARG* 3.7 4.0 - - - +
61C GLN* 1.3 73.9 - - + +
63C ASP* 1.4 61.7 - - - +
65C HIS* 4.5 5.8 - - + +
66C GLY* 2.8 28.8 + - - -
114C TYR* 3.5 26.2 - - + +
147C LEU* 4.1 18.6 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with ASP 63 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
33C ALA* 4.3 4.3 - - - +
59C ARG* 2.8 53.7 + - - +
60C THR* 3.4 13.7 - - - +
62C LEU* 1.4 77.7 - - - +
64C ASN* 1.3 62.6 + - - +
66C GLY* 4.0 0.6 - - - -
67C ASP* 3.0 37.3 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ASN 64 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
60C THR* 3.0 33.1 + - - +
61C GLN* 3.2 11.4 + - - +
63C ASP* 1.3 81.0 - - - +
65C HIS* 1.4 62.6 + - + +
67C ASP* 3.3 11.0 + - - +
68C THR* 2.9 31.8 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with HIS 65 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
29C VAL* 5.2 4.7 - - + -
61C GLN* 2.9 30.7 + - + +
62C LEU* 4.2 7.0 - - + +
64C ASN* 1.4 76.5 - - + +
66C GLY* 1.3 62.0 + - - +
68C THR* 3.3 9.4 + - - +
69C ILE* 2.9 39.0 + - + +
139C ILE* 4.7 3.8 + - - +
142C ALA* 3.5 14.1 - - + +
143C ALA* 3.4 47.2 + - + +
146C ASP* 2.7 37.0 + - + +
147C LEU* 6.0 3.1 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with GLY 66 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
26C LEU* 3.5 17.0 - - - +
29C VAL* 3.9 16.9 - - - +
30C ILE* 5.7 2.0 - - - -
62C LEU 2.8 22.1 + - - -
63C ASP* 3.9 1.1 - - - -
65C HIS* 1.3 73.7 - - - +
67C ASP* 1.3 54.0 + - - +
69C ILE* 3.3 4.1 + - - +
70C ALA* 2.9 30.7 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ASP 67 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
63C ASP* 3.0 24.9 + - - +
64C ASN* 3.5 11.2 - - - +
66C GLY* 1.3 76.6 - - - +
68C THR* 1.3 58.3 + - - +
70C ALA* 3.3 5.6 + - - +
71C GLU* 2.9 39.0 + - - +
1163C FE 4.4 15.3 - - - -
----------------------------------------------------------
Back to top of page
Residues in contact with THR 68 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
64C ASN 2.9 17.1 + - - -
65C HIS* 3.3 11.1 + - - +
67C ASP* 1.3 76.7 - - - +
69C ILE* 1.3 62.2 + - - +
71C GLU* 3.5 12.2 + - - +
72C ARG* 3.1 22.5 + - - +
75C GLN* 5.3 0.3 + - - -
139C ILE* 3.6 26.7 - - + +
145E ARG* 3.6 28.4 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ILE 69 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
22C LEU* 3.3 43.7 - - + +
25C SER* 4.5 2.7 - - - -
26C LEU* 3.9 14.6 - - + +
29C VAL* 4.4 21.3 - - + -
65C HIS* 2.9 30.5 + - + +
66C GLY* 3.7 4.5 - - - +
68C THR* 1.3 76.6 - - - +
70C ALA* 1.3 62.9 + - - +
72C ARG* 3.2 12.1 + - - +
73C VAL* 3.2 13.9 + - - +
121C ILE* 4.5 6.5 - - + -
139C ILE* 4.0 18.2 - - + +
140C PHE* 4.1 22.9 - - + -
143C ALA* 5.1 4.3 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with ALA 70 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
26C LEU* 3.8 24.7 - - + -
66C GLY 2.9 17.5 + - - +
67C ASP* 3.8 6.1 - - - +
69C ILE* 1.3 73.8 - - - +
71C GLU* 1.3 68.3 + - + +
73C VAL* 3.2 20.9 + - - +
74C VAL* 3.3 5.8 + - - +
80C ALA* 3.6 20.6 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with GLU 71 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
67C ASP* 2.9 29.4 + - - +
68C THR* 3.9 10.1 + - - +
70C ALA* 1.3 77.7 - - + +
72C ARG* 1.3 59.0 + - - +
74C VAL* 3.3 5.9 + - - +
75C GLN* 3.0 36.4 + - - +
1163C FE 2.3 34.7 - - - -
149E LYS* 3.1 41.3 + - - +
152E TRP* 3.7 29.3 - - + -
153E PHE* 5.6 0.2 - - - -
----------------------------------------------------------
Back to top of page
Residues in contact with ARG 72 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
8C ASN* 4.4 0.2 + - - -
10C LEU* 5.0 1.2 - - - +
22C LEU* 3.6 17.0 - - + -
68C THR 3.1 14.7 + - - +
69C ILE 3.5 9.0 - - - +
70C ALA 3.2 0.6 - - - -
71C GLU* 1.3 75.2 - - - +
73C VAL* 1.3 66.9 + - - +
75C GLN* 3.0 30.5 + - - +
76C LEU* 3.1 44.8 + - + +
133C ASP* 3.0 28.7 + - - -
135C THR* 3.4 22.7 - - - +
136C THR* 2.8 24.7 + - - +
139C ILE* 3.7 21.3 - - + -
122E ARG* 4.4 4.8 - - - +
148E ASP* 2.7 31.3 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with VAL 73 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
19C ILE* 3.9 13.5 - - + +
22C LEU* 3.4 34.5 - - + +
23C ASN* 3.6 25.4 - - - +
69C ILE* 3.2 10.8 + - + +
70C ALA* 3.2 12.7 + - - +
72C ARG* 1.3 74.5 - - - +
74C VAL* 1.3 60.6 + - - +
76C LEU* 3.1 10.6 + - - +
77C GLY 3.4 0.2 + - - -
78C GLY* 2.8 25.3 + - - -
79C THR 3.4 41.5 - - - +
80C ALA* 4.2 1.6 - - - -
----------------------------------------------------------
Back to top of page
Residues in contact with VAL 74 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
70C ALA 3.6 12.6 - - - +
71C GLU* 3.3 9.1 + - - +
72C ARG 3.1 0.6 - - - -
73C VAL* 1.3 74.0 - - - +
75C GLN* 1.3 66.1 + - - +
77C GLY* 2.9 14.2 + - - -
78C GLY 3.6 17.3 - - - +
79C THR* 4.9 0.4 - - - -
80C ALA* 3.9 20.0 - - + +
152E TRP* 3.3 39.4 - - + +
159E GLN* 6.0 1.1 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with GLN 75 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
6C THR* 4.4 16.3 + - - +
8C ASN* 4.2 10.8 - - - +
68C THR 5.3 0.4 + - - -
71C GLU* 3.0 40.1 + - - +
72C ARG* 3.0 43.8 + - - +
74C VAL* 1.3 76.7 - - - +
76C LEU* 1.3 60.0 - - - +
77C GLY 3.2 2.5 + - - -
139C ILE* 5.4 1.9 - - - +
145E ARG* 4.7 2.8 + - - +
148E ASP* 3.7 13.8 - - + +
149E LYS* 3.8 23.3 + - - +
152E TRP* 3.7 38.5 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 76 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
6C THR* 5.0 1.3 - - - -
8C ASN* 4.2 15.5 - - - +
10C LEU* 3.9 23.8 - - + -
15C LYS* 3.3 36.0 - - + +
18C VAL* 4.0 22.7 - - + -
19C ILE* 3.6 20.6 - - + +
22C LEU* 4.3 7.0 - - + -
72C ARG* 3.1 39.6 + - - +
73C VAL 3.1 4.7 + - - +
74C VAL 3.1 0.6 - - - -
75C GLN* 1.3 77.6 - - - +
77C GLY* 1.3 60.4 + - - +
78C GLY 3.4 1.3 - - - -
133C ASP* 3.8 17.7 - - - +
136C THR* 4.2 4.7 - - - +
----------------------------------------------------------
Back to top of page
A short description of the
analytical approach
The contact analysis used in this page
is based upon the approach
developed in:
Sobolev V., Wade R.C., Vriend G.
and Edelman M. PROTEINS (1996)
25, 120-129.
Contact legitimacy depends on the hydrophobic-hydrophilic
properties of the contacting atoms. In order to
define it, for each inter-atomic contact,
eight atom classes have been introduced:
I Hydrophilic - N and O that can donate and accept hydrogen bonds
(e.g., oxygen of hydroxyl group of Ser. or Thr)
II Acceptor - N or O that can only accept a hydrogen bond
III Donor - N that can only donate a hydrogen bond
IV Hydrophobic - Cl, Br, I and all C atoms that are not in
aromatic rings and do not have a covalent bond to
a N or O atom
V Aromatic - C in aromatic rings irrespective of any other
bonds formed by the atom
VI Neutral - C atoms that have a covalent bond to at least one
atom of class I or two or more atoms from class II
or III; atoms; S, F, P, and metal atoms in all cases
VII Neutral-donor - C atoms that have a covalent bond with only one
atom of class III
VIII Neutral-acceptor - C atoms that have a covalent bond with only
one atom of class II
For each pair of contacts the state of legitimacy
is shown below:
Legend:
+, legitimate
-, illegitimate
------------------------------------------------------------
Atomic class I II III IV V VI VII VIII
------------------------------------------------------------
I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
------------------------------------------------------------
Warning!
Atom classes for heterogroups are automatically
assigned based on the atomic coordinates. However, in
three cases (see below) the automatic assignment
is currently ambiguous. In these
cases, the user is advised to manually analyse
the full list of contacts using
LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are
considered "aromatic" (Class V) if the ring is approximately
planar, and "hydrophobic" (Class IV) or "neutral" (Classes
VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
"hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
"carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).
Please E-mail any
questions and/or suggestions concerning this page to
Vladimir.Sobolev@weizmann.ac.il