Contacts of the helix formed by residues 9 - 22 (chain D) in PDB entry 2GRA
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 GLY 9 (chain D).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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8D ALA* 1.3 82.5 - - - +
10D GLN* 1.3 71.9 + - - +
11D LEU 3.6 0.7 - - - -
12D ALA* 3.2 1.9 - - - +
13D PHE* 3.2 9.7 + - - +
41D THR* 2.9 28.4 - - - +
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Residues in contact with GLN 10 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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9D GLY* 1.3 75.0 - - - +
11D LEU* 1.3 57.0 + - - +
13D PHE* 2.6 37.1 + - - +
14D ALA* 3.1 9.8 + - - -
40D ALA* 6.2 0.3 - - - +
41D THR* 3.7 13.1 + - - +
124D THR* 4.3 19.9 - - + +
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Residues in contact with LEU 11 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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5D PHE* 5.8 0.2 - - - -
9D GLY 3.6 0.2 - - - -
10D GLN* 1.3 78.0 - - - +
12D ALA* 1.3 65.0 + - - +
14D ALA* 3.2 9.3 + - + +
15D LEU* 3.1 36.8 + - + +
69D ALA* 5.2 11.2 - - + -
95D CYS* 4.3 30.5 - - + +
122D THR* 3.6 26.5 - - - +
123D ASN* 4.1 20.0 - - - +
124D THR* 4.6 4.4 - - + +
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Residues in contact with ALA 12 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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5D PHE* 4.2 23.9 - - + -
7D GLY 4.0 5.2 - - - +
8D ALA* 3.0 38.9 + - + +
9D GLY 3.2 5.9 + - - +
10D GLN 2.7 4.6 + - - -
11D LEU* 1.3 75.1 - - - +
13D PHE* 1.3 51.6 - - - +
15D LEU* 3.9 1.4 - - - +
16D ALA* 2.7 38.6 + - - +
32D ALA* 5.6 1.6 - - + -
41D THR* 5.1 0.2 - - + -
45D LEU* 4.8 4.5 - - + -
69D ALA* 4.3 7.4 - - + +
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Residues in contact with PHE 13 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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9D GLY 3.2 6.2 + - - +
10D GLN* 2.6 25.9 + - - +
12D ALA* 1.3 74.7 - - - +
14D ALA* 1.3 58.0 + - - +
16D ALA* 3.2 0.5 - - - +
17D LYS* 2.7 66.7 + - - +
41D THR* 4.6 7.4 - - + -
44D ALA* 3.9 27.1 - - + -
45D LEU* 3.4 35.8 - - + +
48D MET* 4.2 12.1 - - + -
127D VAL* 3.9 20.2 - - + -
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Residues in contact with ALA 14 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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10D GLN 3.1 6.4 + - - +
11D LEU* 3.4 20.6 - - + +
13D PHE* 1.3 80.1 - - - +
15D LEU* 1.3 53.4 + - - +
17D LYS* 3.0 2.6 + - - +
18D GLY 2.7 31.2 + - - -
124D THR* 3.8 20.6 - - + +
126D VAL* 3.5 11.2 - - + +
127D VAL* 3.5 33.9 - - + -
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Residues in contact with LEU 15 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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5D PHE* 3.8 12.8 - - + -
11D LEU* 3.1 40.5 + - + +
14D ALA* 1.3 76.1 - - - +
16D ALA* 1.3 70.2 + - - +
17D LYS 2.9 0.3 + - - -
18D GLY 3.0 0.2 + - - -
19D PHE* 2.8 63.4 + - + -
67D PHE* 3.9 22.7 - - + -
95D CYS* 5.7 5.2 - - - -
120D CYS* 5.7 0.4 - - - -
122D THR* 4.0 11.4 - - + +
126D VAL* 3.4 23.8 - - + -
153D LEU* 4.1 11.7 - - + -
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Residues in contact with ALA 16 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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5D PHE* 4.0 18.5 - - + -
12D ALA 2.7 24.7 + - - +
13D PHE* 3.2 12.3 - - - +
15D LEU* 1.3 74.4 - - - +
17D LYS* 1.3 54.4 + - - +
19D PHE* 3.8 2.3 + - - +
20D THR* 2.6 28.8 + - - -
30D ILE* 3.8 13.5 - - + +
45D LEU* 3.9 9.0 - - + -
48D MET* 3.4 19.1 - - + +
50D VAL* 5.3 2.2 - - + -
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Residues in contact with LYS 17 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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13D PHE* 2.7 50.4 + - - +
14D ALA 3.4 3.1 - - - +
15D LEU 2.9 0.2 + - - -
16D ALA* 1.3 70.9 - - - +
18D GLY* 1.3 69.1 + - - +
19D PHE 3.1 1.8 - - - -
20D THR* 2.8 9.1 + - - -
21D ALA* 2.7 31.1 + - + +
48D MET* 3.8 14.1 - - - +
127D VAL* 3.2 32.6 - - + +
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Residues in contact with GLY 18 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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14D ALA 2.7 15.9 + - - -
15D LEU 3.0 1.8 + - - -
17D LYS* 1.3 73.5 - - - +
19D PHE* 1.3 52.2 + - - +
21D ALA* 3.6 2.2 - - - +
22D ALA* 2.6 39.3 + - - +
126D VAL* 3.4 17.8 + - - -
127D VAL* 4.7 0.9 - - - -
129D ARG* 3.8 5.5 - - - -
156D VAL* 3.2 23.7 - - - +
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Residues in contact with PHE 19 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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3D VAL* 5.4 5.4 - - + -
5D PHE* 3.8 16.4 - + - -
15D LEU* 2.8 56.5 + - + +
16D ALA* 3.8 5.2 - - - +
18D GLY* 1.3 72.7 - - - -
20D THR* 1.3 62.4 + - - +
22D ALA* 4.2 0.2 - - - -
23D GLY 3.2 2.1 + - - -
24D VAL* 3.0 36.5 + - + +
25D LEU* 3.7 24.6 + - + -
30D ILE* 5.0 4.5 - - + -
67D PHE* 4.3 6.5 - + - -
152D LEU* 3.2 46.2 - - + -
153D LEU* 3.3 26.0 - - + -
155D SER* 4.3 6.5 - - - -
156D VAL* 4.4 7.6 - - + -
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Residues in contact with THR 20 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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16D ALA 2.6 21.1 + - - -
17D LYS* 2.8 14.7 + - - -
19D PHE* 1.3 72.9 - - - +
21D ALA* 1.3 55.6 + - - +
23D GLY* 2.7 26.5 + - - -
25D LEU 3.8 10.8 + - - +
26D ALA* 5.4 0.4 - - - -
27D ALA* 4.3 24.2 - - + +
30D ILE* 4.2 7.2 - - - +
48D MET* 3.3 20.7 - - + +
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Residues in contact with ALA 21 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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17D LYS* 2.7 28.3 + - + +
18D GLY* 3.7 4.7 - - - +
20D THR* 1.3 70.2 - - - +
22D ALA* 1.3 58.1 + - - +
23D GLY* 2.8 10.6 + - - -
127D VAL 5.3 3.1 - - - +
129D ARG* 4.0 21.0 + - + +
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Residues in contact with ALA 22 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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18D GLY 2.6 22.1 + - - +
20D THR 3.2 0.2 - - - -
21D ALA* 1.3 71.7 - - - +
23D GLY* 1.3 63.2 + - - +
24D VAL* 3.4 22.0 + - + +
129D ARG* 3.0 39.1 + - - +
155D SER* 3.4 14.1 - - - +
156D VAL* 3.8 2.0 - - + -
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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
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Atomic class I II III IV V VI VII VIII
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I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
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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