Contacts of the helix formed by residues 42 - 71 (chain D) in PDB entry 2CHP
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 HIS 42 (chain D).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
42A HIS* 3.8 14.7 - + - -
39D LYS 5.1 1.3 + - - +
40D GLY 3.0 2.0 + - - -
41D PRO* 1.3 88.2 - - + +
43D PHE* 1.3 64.9 + - - +
44D PHE 3.2 3.0 + - - -
45D THR* 3.3 4.6 + - - -
46D LEU* 3.1 34.9 + - + +
97D ALA* 5.5 4.5 - - + -
151D TYR* 3.4 37.6 + + + +
1154D PO4 3.2 36.3 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with PHE 43 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
146A TRP* 3.9 23.1 - + - -
147A MET* 3.7 43.3 - - + -
150A SER* 3.6 17.3 - - - -
151A TYR* 4.0 13.5 - - + +
35D HIS 4.7 0.2 - - - -
38D VAL* 3.3 41.3 - - + -
39D LYS 4.8 1.7 + - - -
40D GLY 2.8 18.4 + - - +
41D PRO 3.3 1.8 - - - -
42D HIS* 1.3 77.2 - - - +
44D PHE* 1.3 84.2 + + + +
47D HIS* 2.9 58.6 + + + +
----------------------------------------------------------
Back to top of page
Residues in contact with PHE 44 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
45A THR* 3.8 29.8 - - + -
46A LEU* 4.4 11.7 - - + -
49A LYS* 3.8 34.3 - - + -
147A MET* 4.0 29.8 - - + -
148A LEU* 3.9 24.9 - - + -
151A TYR* 3.9 33.7 - + + -
41D PRO 5.1 0.8 + - - -
42D HIS 3.3 1.2 - - - -
43D PHE* 1.3 94.1 - + - +
45D THR* 1.3 65.0 + - - +
47D HIS* 4.1 1.6 - + - +
48D GLU* 3.2 45.5 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with THR 45 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
45A THR* 3.9 14.7 + - - +
42D HIS* 3.3 6.1 + - + -
44D PHE* 1.3 78.9 - - - +
46D LEU* 1.3 68.4 + - + +
48D GLU* 3.8 6.3 - - - +
49D LYS* 2.9 31.6 + - + +
151D TYR* 5.8 4.7 - - + -
1154D PO4 3.1 28.8 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 46 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
38D VAL* 3.9 14.8 - - + -
39D LYS 5.9 0.2 - - - +
42D HIS* 3.1 25.4 + - + +
45D THR* 1.3 82.4 - - + +
47D HIS* 1.3 62.4 + - - +
49D LYS* 4.2 9.0 - - + -
50D PHE* 2.8 56.3 + - + -
97D ALA* 3.7 21.1 - - + -
101D VAL* 4.2 20.6 - - + -
148D LEU* 5.5 4.0 - - + -
151D TYR* 3.6 42.0 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with HIS 47 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
146A TRP* 3.8 11.2 - + - -
147A MET* 3.6 30.4 - - + +
66C GLU* 3.0 25.1 + - - -
35D HIS* 2.8 72.8 + + - -
38D VAL* 3.9 9.0 - - + +
43D PHE* 2.9 39.6 + + + +
44D PHE* 4.1 1.8 - - - +
46D LEU* 1.3 78.5 - - - +
48D GLU* 1.3 71.3 + - + +
50D PHE* 3.6 1.9 + - - +
51D GLU* 3.3 7.9 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with GLU 48 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
147A MET* 5.9 1.4 - - - +
44D PHE* 3.2 38.0 + - - +
45D THR* 3.9 5.2 - - - +
47D HIS* 1.3 83.8 - - + +
49D LYS* 1.3 66.1 + - - +
51D GLU* 3.1 11.0 + - - +
52D GLU* 3.1 30.7 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with LYS 49 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
45D THR* 2.9 25.8 + - + +
46D LEU* 3.3 11.9 + - + +
48D GLU* 1.3 71.4 - - - +
50D PHE* 1.3 62.0 + - + +
52D GLU* 3.2 24.2 + - + +
53D LEU* 2.9 54.1 + - + +
144D GLN* 2.7 36.3 + - - +
147D MET* 3.9 18.4 - - - +
148D LEU* 5.0 15.0 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with PHE 50 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
31D LEU* 3.9 22.5 - - + +
34D PHE* 3.5 42.8 - - + -
35D HIS* 3.6 6.1 - - + -
38D VAL* 3.9 11.0 - - + -
46D LEU* 2.8 53.0 + - + +
47D HIS 4.0 3.6 - - - +
49D LYS* 1.3 76.0 - - + +
51D GLU* 1.3 57.6 + - - +
53D LEU* 3.5 5.7 + - + +
54D TYR* 3.0 33.4 + - - +
100D MET* 4.3 11.2 - - + -
101D VAL* 4.2 21.8 - - + -
104D LEU* 3.6 32.8 - - + -
148D LEU* 5.1 4.7 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with GLU 51 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
62C ASP* 4.9 5.8 - - - +
35D HIS* 3.7 25.6 + - + -
47D HIS* 3.3 4.8 + - - +
48D GLU* 3.1 12.5 + - - +
50D PHE* 1.3 75.7 - - - +
52D GLU* 1.3 66.7 + - + +
54D TYR* 3.2 34.5 + - + -
55D ASP* 2.9 34.8 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with GLU 52 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
48D GLU* 3.1 20.1 + - - +
49D LYS* 3.5 30.6 + - + +
51D GLU* 1.3 76.8 - - + +
53D LEU* 1.3 64.8 + - + +
55D ASP* 3.3 10.9 + - - +
56D HIS* 3.1 21.5 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 53 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
24D TRP* 5.6 0.2 - - - -
31D LEU* 3.7 11.4 - - + +
49D LYS* 2.9 40.8 + - + +
50D PHE* 3.7 7.0 - - + +
52D GLU* 1.3 79.5 - - + +
54D TYR* 1.3 56.0 + - - +
56D HIS* 3.4 15.2 + - + +
57D ALA* 2.9 25.5 + - - +
104D LEU* 4.0 25.6 - - + -
108D TYR* 3.5 29.9 + - + +
140D GLU* 5.9 0.2 - - - +
144D GLN* 3.6 35.4 - - + +
148D LEU* 4.5 7.2 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with TYR 54 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
62C ASP* 4.0 12.8 + - - +
28D TYR* 3.2 28.0 - + + +
31D LEU* 3.7 18.5 - - + +
32D HIS* 3.4 52.8 + + + -
35D HIS* 3.5 35.1 + + + -
50D PHE 3.0 21.9 + - - +
51D GLU* 3.2 41.0 + - + +
53D LEU* 1.3 73.3 - - - +
55D ASP* 1.3 75.6 + - - +
57D ALA* 3.3 2.2 + - - -
58D ALA 2.9 23.6 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with ASP 55 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
28D TYR* 5.5 0.4 - - - -
51D GLU* 2.9 29.2 + - - +
52D GLU* 3.5 12.1 - - - +
54D TYR* 1.3 91.3 - - - +
56D HIS* 1.3 63.0 + - - +
58D ALA* 3.3 6.7 + - - +
59D GLU* 3.1 33.5 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with HIS 56 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
24D TRP* 3.7 26.2 - + - -
52D GLU 3.1 13.1 + - - +
53D LEU* 3.5 16.5 + - + +
55D ASP* 1.3 73.8 - - - +
57D ALA* 1.3 64.6 + - - +
59D GLU* 3.2 19.3 + - + +
60D THR* 2.8 44.8 + - - -
108D TYR* 5.2 6.7 + + - -
137D LEU* 4.3 9.6 - - + +
140D GLU* 3.6 37.9 - - + +
141D VAL* 4.9 2.9 - - + -
144D GLN* 6.0 1.7 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with ALA 57 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
24D TRP* 3.7 40.5 - - + +
27D LEU* 4.9 0.9 - - + -
28D TYR* 4.1 15.7 - - - +
31D LEU* 4.4 5.4 - - + -
53D LEU 2.9 17.4 + - - +
54D TYR* 3.7 9.0 - - - +
55D ASP 3.3 0.6 - - - -
56D HIS* 1.3 75.8 - - - +
58D ALA* 1.3 58.1 + - - +
60D THR* 3.3 2.3 + - - -
61D VAL* 2.9 32.9 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ALA 58 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
28C TYR* 3.6 23.6 - - - +
32C HIS* 5.3 3.7 + - - +
28D TYR* 3.7 12.0 - - + -
54D TYR 2.9 16.0 + - - +
55D ASP* 3.8 7.0 - - - +
57D ALA* 1.3 73.4 - - - +
59D GLU* 1.3 65.0 + - + +
61D VAL* 3.4 10.3 + - - +
62D ASP* 3.2 21.7 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with GLU 59 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
55D ASP* 3.1 19.6 + - - +
56D HIS* 3.2 23.9 + - + +
58D ALA* 1.3 77.3 - - + +
60D THR* 1.3 58.4 + - - +
62D ASP* 3.3 6.5 + - - +
63D THR* 3.0 33.8 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with THR 60 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
24D TRP* 3.5 38.1 - - + -
56D HIS* 2.8 42.3 + - - -
57D ALA 3.5 4.3 - - - -
59D GLU* 1.3 74.0 - - - +
61D VAL* 1.3 67.0 + - - +
63D THR* 3.2 6.3 + - - -
64D ILE* 3.0 32.7 + - + +
133D LEU* 6.4 0.4 - - + -
137D LEU* 3.6 30.9 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with VAL 61 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
32C HIS* 4.3 11.0 - - + +
36C TRP* 3.9 23.3 - - + -
21D LEU* 3.4 22.7 - - + +
24D TRP* 3.8 10.5 - - + +
25D PHE* 3.7 50.3 - - + +
28D TYR* 5.4 2.0 - - + -
57D ALA 2.9 20.6 + - - +
58D ALA* 3.5 11.7 - - - +
60D THR* 1.3 77.2 - - - +
62D ASP* 1.3 63.3 + - - +
64D ILE* 5.0 0.2 - - - -
65D ALA* 3.1 21.1 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ASP 62 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
32C HIS* 5.4 2.9 - - + +
35C HIS* 3.4 11.5 + - - -
36C TRP* 3.1 25.6 + - + -
51C GLU* 4.8 6.8 - - - +
54C TYR* 4.0 17.6 + - - +
58D ALA 3.2 10.7 + - - +
59D GLU* 3.8 8.3 - - - +
60D THR 3.2 0.2 - - - -
61D VAL* 1.3 82.3 - - + +
63D THR* 1.3 57.1 + - - +
65D ALA* 3.9 0.5 - - - +
66D GLU* 3.0 55.7 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with THR 63 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
59D GLU* 3.0 19.3 + - - +
60D THR* 3.2 6.9 + - - -
62D ASP* 1.3 72.8 - - - +
64D ILE* 1.3 59.7 + - + +
66D GLU* 3.5 4.1 + - - +
67D ARG* 2.9 27.9 + - - +
133D LEU* 3.5 32.1 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with ILE 64 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
17D LEU* 3.7 39.7 - - + +
20D GLN 4.3 7.4 - - - +
21D LEU* 3.9 13.0 - - + +
24D TRP* 3.6 32.1 - - + -
60D THR* 3.0 28.8 + - + +
61D VAL 4.0 2.7 - - - +
63D THR* 1.3 72.9 - - - +
65D ALA* 1.3 66.7 + - - +
67D ARG* 3.2 3.7 + - - +
68D LEU* 2.9 22.3 + - + +
133D LEU* 4.3 11.4 - - + -
134D PHE* 4.1 20.9 - - + -
137D LEU* 4.0 12.6 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with ALA 65 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
36C TRP* 3.3 50.7 - - + +
21D LEU* 4.2 6.7 - - + +
61D VAL 3.1 11.6 + - - +
62D ASP 3.9 0.4 - - - +
64D ILE* 1.3 76.2 - - - +
66D GLU* 1.3 58.6 + - - +
68D LEU* 3.3 5.2 + - - +
69D LEU* 3.0 33.1 + - - +
75D PRO* 4.1 16.2 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with GLU 66 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
35C HIS* 3.4 11.6 + - - -
36C TRP* 3.9 9.3 - - + -
47C HIS* 2.9 36.6 + - - -
62D ASP* 3.0 38.6 + - - +
63D THR* 4.2 4.0 - - - +
65D ALA* 1.3 77.1 - - - +
67D ARG* 1.3 58.4 + - - +
69D LEU* 3.5 12.1 + - + +
70D ALA* 3.0 27.2 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ARG 67 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
17D LEU* 4.4 9.4 - - + -
63D THR 2.9 18.7 + - - +
64D ILE 3.7 2.9 - - - +
66D GLU* 1.3 73.6 - - - +
68D LEU* 1.3 65.1 + - - +
70D ALA* 3.0 28.9 + - - +
71D ILE* 3.0 35.6 + - + +
127D ASP* 2.9 26.1 + - - -
129D ALA* 3.5 24.7 - - - +
130D THR* 2.9 27.7 + - - +
133D LEU* 3.7 23.1 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 68 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
14D GLU* 3.7 33.2 - - + +
17D LEU* 4.0 20.3 - - + +
18D ASN* 3.2 38.6 - - - +
21D LEU* 5.2 1.6 - - + -
64D ILE* 2.9 17.1 + - + +
65D ALA* 3.3 10.5 + - - +
67D ARG* 1.3 71.3 - - - +
69D LEU* 1.3 61.4 + - - +
71D ILE* 3.3 15.7 - - + +
73D GLY* 2.9 42.2 + - - -
74D GLN 3.7 2.0 - - - +
75D PRO* 3.4 24.2 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 69 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
36C TRP* 3.8 46.0 - - + +
37C TYR* 4.8 9.6 - - + -
65D ALA 3.0 28.5 + - - +
66D GLU* 3.6 13.9 - - + +
68D LEU* 1.3 75.5 - - - +
70D ALA* 1.3 64.6 + - - +
72D GLY* 3.0 15.2 + - - -
73D GLY 3.7 10.0 - - - +
74D GLN* 5.2 1.6 - - - +
75D PRO* 3.3 27.6 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with ALA 70 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
66D GLU 3.0 17.8 + - - +
67D ARG* 3.0 26.3 + - - +
69D LEU* 1.3 77.2 - - - +
71D ILE* 1.3 60.7 + - - +
72D GLY 3.6 0.2 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with ILE 71 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
10D GLN* 3.1 34.8 + - - +
13D VAL* 3.8 28.3 - - + -
14D GLU* 4.3 1.6 - - + -
17D LEU* 4.3 11.9 - - + -
67D ARG* 3.0 47.6 + - - +
68D LEU* 3.3 29.4 - - + +
70D ALA* 1.3 76.7 - - - +
72D GLY* 1.3 57.3 + - - +
73D GLY 4.4 0.4 - - - +
127D ASP* 3.9 12.3 - - - +
130D THR* 4.4 0.9 - - - +
----------------------------------------------------------
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