Contacts of the helix formed by residues 36 - 64 (chain O) in PDB entry 2X17
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 LEU 36 (chain O).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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1431 PHE* 5.0 12.6 - - + -
31O PHE* 2.9 38.5 + - + +
32O GLU* 5.0 0.7 - - - -
34O LEU* 4.2 19.1 - - + +
35O GLY* 1.3 76.9 - - - +
37O GLU* 1.3 59.5 + - - +
39O PHE* 3.5 14.9 + - + -
40O ALA* 3.1 22.3 + - - +
83O PRO* 4.1 20.0 - - + -
151O LEU* 4.3 28.3 - - + +
152O PHE* 5.5 1.8 - - + -
155O ASP* 3.3 32.1 - - + +
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Residues in contact with GLU 37 (chain O).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
1361 LYS* 3.2 46.7 + - + +
1401 LYS* 6.4 0.9 - - - -
32O GLU* 3.4 20.6 - - - +
35O GLY* 3.3 12.7 + - - +
36O LEU* 1.3 71.6 - - - +
38O GLY* 1.3 60.4 + - - +
40O ALA* 3.6 7.1 - - - +
41O ASN* 2.8 42.3 + - - +
155O ASP* 3.5 5.4 + - - +
159O SER* 5.4 0.4 - - - -
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Residues in contact with GLY 38 (chain O).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
37O GLU* 1.3 76.6 - - - +
39O PHE* 1.3 58.8 + - - +
41O ASN* 3.5 1.1 + - - +
42O TRP* 3.0 29.3 + - - +
155O ASP* 2.9 29.9 + - - -
158O LEU* 3.5 13.4 - - - +
159O SER* 3.8 18.7 - - - -
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Residues in contact with PHE 39 (chain O).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
31O PHE* 3.5 34.3 - + + -
36O LEU* 3.8 12.6 - - + +
37O GLU 3.4 0.2 - - - -
38O GLY* 1.3 75.0 - - - +
40O ALA* 1.3 63.1 + - - +
42O TRP* 3.5 7.1 + - - +
43O MET* 3.1 28.1 + - - +
83O PRO* 5.2 0.2 - - + -
87O PHE* 3.7 31.8 - + - -
137O ILE* 4.3 3.8 - - + -
141O LEU* 4.2 16.2 - - + -
151O LEU* 4.0 25.8 - - + -
154O LEU* 4.0 15.5 - - + -
155O ASP* 3.2 47.1 + - + -
158O LEU* 3.6 23.1 - - + -
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Residues in contact with ALA 40 (chain O).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
586 TYR* 4.6 0.2 - - - +
28O ALA* 3.4 26.8 - - - +
31O PHE* 3.8 3.6 - - - +
32O GLU* 3.4 34.1 - - - +
36O LEU 3.1 18.9 + - - +
37O GLU 3.6 5.2 - - - +
38O GLY 3.3 0.2 - - - -
39O PHE* 1.3 78.2 - - - +
41O ASN* 1.3 58.1 + - - +
43O MET 3.3 1.0 + - - -
44O LYS* 3.0 32.4 + - - +
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Residues in contact with ASN 41 (chain O).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
32O GLU* 5.0 0.9 - - - +
37O GLU* 2.8 30.5 + - - +
38O GLY* 4.0 5.1 - - - +
40O ALA* 1.3 70.5 - - - +
42O TRP* 1.3 60.5 + - - +
44O LYS* 3.5 25.4 + - - +
45O ALA* 3.0 29.1 + - - +
159O SER* 5.3 8.4 + - - -
161O ARG 3.7 13.8 - - - +
162O ALA* 4.6 6.4 - - + +
163O PRO* 3.4 20.3 - - + +
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Residues in contact with TRP 42 (chain O).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
24O TYR* 6.1 0.9 - + - -
38O GLY 3.0 18.6 + - - +
39O PHE* 3.6 6.5 - - - +
41O ASN* 1.3 76.3 - - - +
43O MET* 1.3 88.6 + - + +
45O ALA* 3.4 6.1 + - - +
46O GLN* 3.0 43.6 + - + +
87O PHE* 4.3 10.5 - + - -
133O SER* 3.7 19.7 - - - -
134O VAL* 4.4 18.6 - - + -
137O ILE* 3.5 23.7 - - + +
158O LEU* 3.6 33.7 - - + +
161O ARG* 3.2 51.5 + - + +
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Residues in contact with MET 43 (chain O).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
24O TYR* 3.4 49.3 - - + +
27O MET* 3.7 34.8 - - + -
28O ALA* 3.8 5.6 - - + -
31O PHE* 4.1 12.1 - - + -
39O PHE 3.1 20.2 + - - +
40O ALA 3.6 4.7 - - - +
41O ASN 3.3 0.2 - - - -
42O TRP* 1.3 90.2 - - + +
44O LYS* 1.3 59.8 + - - +
46O GLN* 3.3 3.0 + - - +
47O ALA* 2.8 29.3 + - - +
87O PHE* 3.7 39.5 - - + -
90O ALA* 4.8 2.5 - - + -
134O VAL* 6.5 0.2 - - + -
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Residues in contact with LYS 44 (chain O).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
556 LEU* 4.8 15.1 - - + +
586 TYR* 3.4 30.6 - - - -
596 ASN* 4.2 7.7 + - - -
25O PHE* 4.7 11.7 - - + -
28O ALA* 3.8 10.1 - - + -
32O GLU* 3.1 29.2 + - - -
40O ALA 3.0 20.9 + - - +
41O ASN* 3.5 27.0 + - - +
43O MET* 1.3 74.6 - - - +
45O ALA* 1.3 62.2 + - - +
47O ALA* 3.3 9.3 + - - +
48O GLU* 3.2 26.7 + - - +
163O PRO* 3.9 19.6 - - + +
166O PRO* 6.5 0.2 - - + -
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Residues in contact with ALA 45 (chain O).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
41O ASN 3.0 18.8 + - - +
42O TRP 3.6 2.0 - - - +
44O LYS* 1.3 76.0 - - - +
46O GLN* 1.3 62.6 + - - +
48O GLU* 3.4 9.0 + - - +
49O GLU* 3.4 22.7 + - - +
161O ARG* 3.5 33.5 + - + +
162O ALA 3.8 17.7 - - - +
163O PRO* 4.1 8.7 - - + +
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Residues in contact with GLN 46 (chain O).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
24O TYR* 3.7 25.6 - - + -
42O TRP* 3.0 40.2 + - + +
43O MET* 3.6 5.8 - - - +
44O LYS 3.3 0.2 - - - -
45O ALA* 1.3 75.4 - - - +
47O ALA* 1.3 64.5 + - - +
49O GLU* 3.1 20.4 + - - +
50O GLU* 3.1 31.2 + - - +
130O GLU* 3.1 29.2 + - - +
133O SER* 5.0 2.8 + - - -
134O VAL* 5.6 2.7 - - + +
161O ARG* 3.0 31.3 + - - +
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Residues in contact with ALA 47 (chain O).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
21O ALA* 3.3 51.7 - - + +
24O TYR* 4.1 6.7 - - + +
25O PHE* 4.2 11.2 - - + +
43O MET 2.8 17.9 + - - +
44O LYS* 3.5 10.8 - - - +
46O GLN* 1.3 76.5 - - - +
48O GLU* 1.3 61.4 + - + +
50O GLU 3.5 0.5 + - - -
51O ILE* 3.3 14.2 + - + +
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Residues in contact with GLU 48 (chain O).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
556 LEU* 5.7 1.2 - - - +
1656 LEU* 4.0 17.4 - - + +
1696 LEU* 3.9 21.0 - - + +
44O LYS 3.2 12.6 + - - +
45O ALA* 3.5 9.6 - - - +
46O GLN 3.2 0.4 - - - -
47O ALA* 1.3 75.2 - - - +
49O GLU* 1.3 62.8 + - - +
51O ILE* 3.3 15.9 + - + +
52O GLY 3.1 15.9 + - - -
163O PRO* 3.3 22.1 - - - +
164O LYS* 2.9 24.5 + - - +
165O LEU* 3.0 39.0 + - + +
166O PRO* 3.4 2.3 - - - +
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Residues in contact with GLU 49 (chain O).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
1696 LEU* 3.6 18.2 - - + +
1706 MET* 3.1 42.1 + - + +
1716 GLN 5.0 0.5 + - - -
45O ALA 3.4 5.6 + - - +
46O GLN* 3.1 21.0 + - - +
48O GLU* 1.3 77.7 - - - +
50O GLU* 1.3 58.6 + - - +
52O GLY* 3.2 2.8 + - - +
53O HIS* 3.0 35.1 + - + -
161O ARG* 3.6 26.2 + - - +
164O LYS* 5.5 3.6 + - - -
1171O AG 3.2 23.0 - - - -
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Residues in contact with GLU 50 (chain O).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
17O GLU* 3.0 42.7 - - - +
20O SER* 3.6 14.8 - - - -
21O ALA* 3.6 23.1 - - + +
24O TYR* 3.6 15.0 - - + -
46O GLN* 3.1 20.8 + - - +
47O ALA 3.8 0.2 - - - +
48O GLU 3.3 0.6 - - - -
49O GLU* 1.3 75.2 - - - +
51O ILE* 1.3 60.3 - - - +
53O HIS* 3.2 10.7 + - - +
54O ALA* 3.0 26.7 + - - +
94O GLU* 4.8 2.4 - - - +
97O ILE* 5.8 1.7 - - - +
127O GLN* 5.1 2.9 + - - -
130O GLU* 3.0 34.8 - - - +
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Residues in contact with ILE 51 (chain O).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
516 ILE* 4.7 27.8 - - + -
1656 LEU* 4.4 18.8 - - + -
18O LEU* 4.8 16.2 - - + -
21O ALA* 3.8 14.6 - - + -
47O ALA* 3.3 19.1 - - + +
48O GLU* 3.3 18.0 + - + +
50O GLU* 1.3 75.0 - - - +
52O GLY* 1.3 56.8 + - - +
54O ALA* 3.3 8.7 + - + +
55O LEU* 3.0 37.1 + - + +
165O LEU* 6.0 1.3 - - + -
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Residues in contact with GLY 52 (chain O).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
1696 LEU* 4.1 23.3 - - - +
48O GLU 3.1 12.8 + - - -
49O GLU 3.2 6.0 + - - -
50O GLU 3.2 0.4 - - - -
51O ILE* 1.3 77.4 - - - +
53O HIS* 1.3 61.6 + - - +
55O LEU* 3.3 11.4 + - - +
56O ARG* 3.2 28.4 + - - +
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Residues in contact with HIS 53 (chain O).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
1706 MET* 5.3 0.7 - - + -
17O GLU* 3.3 31.7 + - - +
49O GLU* 3.0 19.3 + - + -
50O GLU* 3.2 10.0 + - - +
52O GLY* 1.3 74.6 - - - +
54O ALA* 1.3 65.1 + - - +
56O ARG* 3.3 13.6 + - - +
57O PHE* 3.3 21.4 + - - -
122O TRP* 3.7 22.9 - + - -
123O PHE* 3.6 12.3 - + + -
126O GLU* 3.2 18.0 + - - +
127O GLN* 4.9 1.2 + - - -
130O GLU* 3.1 24.9 - - - -
1171O AG 2.2 32.0 - - - -
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Residues in contact with ALA 54 (chain O).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
256 PHE* 5.3 3.6 - - + -
14O LEU* 3.4 30.9 - - + +
17O GLU* 3.9 8.9 - - + +
18O LEU* 3.8 33.0 - - + -
50O GLU 3.0 13.2 + - - +
51O ILE* 3.5 9.2 - - + +
53O HIS* 1.3 75.8 - - - +
55O LEU* 1.3 58.6 + - + +
57O PHE* 3.5 1.1 + - - -
58O TYR* 3.1 23.2 + - - +
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Residues in contact with LEU 55 (chain O).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
256 PHE* 3.9 29.4 - - + -
446 LYS* 4.9 16.4 - - + +
486 GLU* 5.7 1.3 - - - +
1636 PRO* 6.5 0.2 - - + -
1656 LEU* 5.4 4.7 - - + -
1666 PRO* 3.9 34.1 - - + -
1696 LEU* 5.5 0.2 - - + -
51O ILE* 3.0 29.6 + - + +
52O GLY* 3.5 15.7 - - - +
53O HIS 3.2 0.4 - - - -
54O ALA* 1.3 75.9 - - - +
56O ARG* 1.3 57.6 + - + +
58O TYR* 3.3 10.5 - - + +
59O ASN* 2.9 42.6 + - - +
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Residues in contact with ARG 56 (chain O).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
1696 LEU 5.6 1.8 + - - -
1706 MET* 5.1 8.9 - - - +
52O GLY 3.2 15.5 + - - +
53O HIS* 3.3 10.8 + - - +
55O LEU* 1.3 76.4 - - + +
57O PHE* 1.3 60.1 + - - +
59O ASN* 3.4 10.0 + - - +
60O TYR* 3.0 28.1 + - - +
119O PHE* 3.7 8.7 - - + -
122O TRP* 3.4 65.3 - - - +
123O PHE* 3.8 12.3 - - + -
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Residues in contact with PHE 57 (chain O).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
10O LEU* 3.7 40.2 - - + +
13O GLN* 3.3 34.3 - - + -
14O LEU* 4.0 19.5 - - + -
17O GLU* 4.3 11.9 - - + -
53O HIS 3.3 21.9 + - - -
54O ALA 3.5 7.2 + - - +
56O ARG* 1.3 75.5 - - - +
58O TYR* 1.3 65.2 + - - +
60O TYR* 4.0 0.9 - - - +
61O ILE* 3.1 31.0 + - - +
101O ILE* 4.1 11.4 - - + -
104O LEU* 4.4 0.9 - - + -
119O PHE* 3.6 21.3 - + - -
120O LEU* 4.2 8.5 - - + -
123O PHE* 3.4 34.8 - + - -
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Residues in contact with TYR 58 (chain O).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
256 PHE* 3.7 29.4 - + + -
286 ALA 3.1 22.6 + - - -
296 ALA* 3.8 17.7 - - + -
326 GLU* 2.9 24.7 + - - +
446 LYS* 3.4 31.2 - - - -
14O LEU* 3.6 10.5 - - + +
54O ALA 3.1 14.6 + - - +
55O LEU* 3.3 17.0 - - + +
57O PHE* 1.3 78.5 - - - +
59O ASN* 1.3 74.6 + - - +
61O ILE* 3.6 1.4 + - - +
62O TYR* 3.2 50.9 + + + -
68O VAL* 4.0 18.8 - - + -
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Residues in contact with ASN 59 (chain O).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
326 GLU* 6.0 0.2 - - - -
446 LYS* 4.4 6.9 + - - -
55O LEU* 2.9 31.2 + - - +
56O ARG* 3.4 9.3 + - - +
57O PHE 3.3 0.2 - - - -
58O TYR* 1.3 91.4 - - - +
60O TYR* 1.3 59.8 + - - +
62O TYR* 3.7 4.1 + - - +
63O ASP* 3.1 36.9 + - - +
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Residues in contact with TYR 60 (chain O).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
128M VAL* 4.2 16.6 - - + -
2O LEU* 4.3 0.7 - - + -
10O LEU* 3.8 24.5 - - + -
56O ARG 3.0 17.4 + - - +
57O PHE 3.5 2.7 + - - +
58O TYR 3.4 0.2 - - - -
59O ASN* 1.3 74.8 - - - +
61O ILE* 1.3 66.8 + - + +
63O ASP* 3.1 7.2 + - + +
64O ARG* 3.0 53.1 + - + +
115O SER* 3.1 12.3 - - - -
116O THR* 2.7 45.2 + - - -
119O PHE* 3.5 52.3 - + + -
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Residues in contact with ILE 61 (chain O).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
2O LEU* 4.5 4.8 - - - +
7O LEU* 3.7 14.1 - - + +
10O LEU* 3.9 45.5 - - + +
11O ASN* 4.0 16.4 - - - +
14O LEU* 4.3 3.8 - - + -
57O PHE 3.1 20.8 + - - +
58O TYR 3.9 0.2 - - - +
59O ASN 3.5 0.2 - - - -
60O TYR* 1.3 77.2 - - + +
62O TYR* 1.3 56.6 + - + +
64O ARG* 3.3 8.3 + - - +
66O GLY* 2.8 30.7 + - - -
67O ARG 3.6 25.8 - - - +
68O VAL* 3.7 30.1 - - + -
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Residues in contact with TYR 62 (chain O).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
296 ALA* 2.5 34.4 + - - +
326 GLU* 3.7 28.5 - - + -
336 ASP* 3.7 25.1 - - + -
132M ALA* 5.3 1.0 - - - +
58O TYR* 3.2 46.3 + + + +
59O ASN* 4.2 4.5 - - - +
60O TYR 3.3 0.4 - - - -
61O ILE* 1.3 74.2 - - - +
63O ASP* 1.3 64.4 + - - +
64O ARG 3.3 0.4 - - - -
65O ASN* 3.4 12.0 + - - +
66O GLY 3.6 21.5 - - - +
67O ARG* 3.6 6.3 + - - -
68O VAL* 3.4 33.9 + - + -
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Residues in contact with ASP 63 (chain O).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
128M VAL* 4.0 25.4 - - + +
129M GLU* 5.4 7.4 - - - +
131M GLU* 5.2 2.9 - - - +
132M ALA* 3.7 35.0 + - + +
59O ASN* 3.1 24.0 + - - +
60O TYR* 3.1 13.8 + - - +
62O TYR* 1.3 77.9 - - - +
64O ARG* 1.3 61.3 + - - +
65O ASN* 3.2 4.3 + - - +
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Residues in contact with ARG 64 (chain O).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
102M TYR* 3.3 20.4 + - - -
128M VAL* 3.9 24.7 - - - +
131M GLU* 4.1 27.3 + - - +
1O MET* 3.7 38.7 + - - +
2O LEU* 3.8 29.2 + - + +
60O TYR* 3.0 58.8 + - + +
61O ILE 3.3 0.6 + - - +
62O TYR 3.3 0.4 - - - -
63O ASP* 1.3 77.4 + - - +
65O ASN* 1.3 69.2 + - - +
66O GLY 3.3 2.6 + - - -
113O ASP* 4.4 6.3 + - - -
115O SER* 3.4 19.1 + - - -
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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