Contacts of the helix formed by residues 19 - 27 (chain G) in PDB entry 3NM9
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 ALA 19 (chain G).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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15G TRP* 3.2 49.1 - - + +
16G LEU* 2.9 4.7 + - - +
18G SER* 1.3 80.7 - - - +
20G ARG* 1.3 68.0 + - - +
21G GLU 3.3 1.8 - - - -
22G SER* 3.3 11.9 + - - +
23G ILE* 2.9 29.6 + - + +
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Residues in contact with ARG 20 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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11F C 3.3 26.1 + - - +
16G LEU* 2.8 42.0 + - + +
17G ASN* 3.0 36.1 + - - +
19G ALA* 1.3 75.3 - - - +
21G GLU* 1.3 62.9 + - - +
23G ILE* 3.2 9.9 + - - +
24G LYS* 2.9 31.6 + - + +
32G VAL* 5.9 1.6 - - - +
35G VAL* 4.2 21.8 - - + +
2H G 4.4 6.7 - - - +
3H C 3.4 49.9 + - - +
4H G 3.4 13.7 - - - +
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Residues in contact with GLU 21 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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17G ASN 5.1 1.6 + - - +
18G SER 5.6 4.5 - - - +
19G ALA 4.7 1.1 - - - +
20G ARG* 1.3 78.4 - - - +
22G SER* 1.3 64.5 + - - +
24G LYS* 3.2 15.6 + - - +
25G ARG* 3.1 22.3 + - + +
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Residues in contact with SER 22 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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18G SER 5.4 1.5 + - - -
19G ALA* 3.3 16.3 + - - -
21G GLU* 1.3 79.7 + - - +
23G ILE* 1.3 67.0 + - - +
25G ARG* 3.3 12.6 + - - +
26G GLU* 3.1 33.8 + - - +
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Residues in contact with ILE 23 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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15G TRP* 4.3 9.9 - - + -
16G LEU* 4.2 16.4 - - + -
19G ALA* 2.9 21.4 + - + +
20G ARG* 3.6 7.0 - - - +
22G SER* 1.3 75.0 - - - +
24G LYS* 1.3 63.9 + - - +
26G GLU* 3.0 12.9 + - - -
27G ASN* 3.1 24.1 + - - +
30G ILE* 4.2 20.0 - - + -
35G VAL* 4.1 22.9 - - + -
38G ARG* 4.4 7.6 - - + -
39G GLY* 4.1 28.7 - - - +
42G LEU* 4.2 17.3 - - + -
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Residues in contact with LYS 24 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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20G ARG* 2.9 23.1 + - + +
21G GLU* 3.4 13.9 - - - +
23G ILE* 1.3 76.3 - - - +
25G ARG* 1.3 62.0 + - - +
26G GLU 3.1 1.2 + - - -
27G ASN 3.3 9.2 + - - -
28G PRO* 3.4 17.7 - - - +
29G GLY 6.0 1.8 - - - +
30G ILE* 4.1 24.2 - - + +
35G VAL* 5.4 5.6 - - + -
4H G 3.0 31.7 + - - +
5H A 4.3 19.7 - - - +
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Residues in contact with ARG 25 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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21G GLU* 3.1 13.3 + - + +
22G SER* 3.5 13.2 - - - +
24G LYS* 1.3 75.4 - - - +
26G GLU* 1.3 70.7 + - + +
28G PRO* 3.9 11.6 - - - +
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Residues in contact with GLU 26 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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22G SER* 3.1 25.8 + - - +
23G ILE* 3.0 9.4 + - - +
25G ARG* 1.3 93.4 + - + +
27G ASN* 1.3 73.0 + - - +
28G PRO* 3.5 7.1 - - - +
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Residues in contact with ASN 27 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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23G ILE* 3.1 26.3 + - - +
24G LYS 3.5 3.8 - - - +
26G GLU* 1.3 94.6 + - - +
28G PRO* 1.3 70.7 - - - +
29G GLY 3.3 0.2 + - - -
30G ILE* 3.0 43.3 + - + +
38G ARG* 4.3 22.8 + - - +
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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