Contacts of the helix formed by residues 5 - 13 (chain E) in PDB entry 1A4Y
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 ARG 5 (chain E).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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437D TYR* 5.4 1.4 - - - -
438D TRP* 2.5 40.6 + - - +
439D SER 3.0 15.0 - - - -
440D GLU* 4.3 13.6 - - + +
443D GLU* 3.6 39.5 + - + +
3E ASN 2.8 5.1 + - - +
4E SER* 1.3 80.9 - - - +
6E TYR* 1.3 60.6 + - - +
8E HIS* 3.4 9.8 + - - +
9E PHE* 3.1 21.8 + - - +
108E GLU* 3.0 33.7 + - - +
113E VAL* 3.8 40.9 + - + +
114E HIS* 6.2 0.2 - - - +
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Residues in contact with TYR 6 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
2E ASP* 3.2 44.6 - - + -
3E ASN 3.0 11.2 + - - +
5E ARG* 1.3 77.6 - - - +
7E THR* 1.3 56.9 + - - +
9E PHE* 3.1 5.0 - - - +
10E LEU* 3.0 55.7 + - + +
50E LYS* 3.0 35.0 + - - +
51E ARG* 3.7 3.6 + - - -
53E ILE* 5.2 1.6 - - + -
54E LYS* 4.0 10.2 - - + +
111E LEU* 3.7 34.1 - - + -
112E PRO* 3.5 43.7 - - + +
113E VAL* 4.4 1.9 - - + +
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Residues in contact with THR 7 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
2E ASP* 3.9 9.4 - - - +
3E ASN* 3.6 11.6 + - - -
4E SER* 2.7 28.0 + - - -
6E TYR* 1.3 79.3 - - - +
8E HIS* 1.3 62.8 + - - +
10E LEU* 3.2 10.3 + - + +
11E THR* 2.9 34.2 + - - +
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Residues in contact with HIS 8 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
460D SER* 2.9 35.3 + - - -
4E SER 2.5 18.3 + - - +
5E ARG* 3.6 11.9 - - - +
7E THR* 1.3 72.4 - - - +
9E PHE* 1.3 65.0 + - - +
11E THR* 3.2 10.4 + - + +
12E GLN* 3.1 52.6 + - + +
113E VAL 5.8 3.6 - - - -
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Residues in contact with PHE 9 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
5E ARG 3.1 13.2 + - - +
6E TYR* 3.1 9.0 - + - +
8E HIS* 1.3 79.3 - - - +
10E LEU* 1.3 69.9 + - + +
12E GLN* 3.2 2.0 + - - -
13E HIS* 2.7 55.6 + - + +
46E ILE* 4.3 15.7 - - + -
53E ILE* 4.0 24.0 - - + -
105E VAL* 4.2 15.9 - - + -
112E PRO* 3.6 23.1 - - + +
113E VAL* 3.9 5.2 - - - -
114E HIS* 3.6 24.0 - - - -
115E LEU* 3.5 37.2 - - + -
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Residues in contact with LEU 10 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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2E ASP* 4.7 2.5 - - + +
6E TYR* 3.0 64.7 + - + +
7E THR* 3.2 11.0 + - - +
9E PHE* 1.3 91.9 - - + +
11E THR* 1.3 58.6 + - - +
14E TYR* 2.8 60.4 + - + +
33E ARG* 3.4 0.3 + - - -
50E LYS* 3.8 20.9 - - + +
53E ILE* 4.9 6.1 - - + -
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Residues in contact with THR 11 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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7E THR* 2.9 24.8 + - - +
8E HIS* 3.4 14.0 - - - +
9E PHE 3.1 0.2 - - - -
10E LEU* 1.3 77.5 - - - +
12E GLN* 1.3 62.6 + - + +
33E ARG* 2.5 59.1 + - - +
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Residues in contact with GLN 12 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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434D TYR* 3.9 2.0 - - - -
435D ASP* 4.9 1.6 + - - +
460D SER* 2.7 35.4 + - - -
8E HIS* 3.1 38.8 + - + +
9E PHE* 4.8 0.4 - - - -
11E THR* 1.3 81.8 - - + +
13E HIS* 1.3 82.4 + - + +
14E TYR 3.9 0.2 - - - -
35E LEU* 3.6 36.7 - - + +
40E LYS* 4.1 11.3 - - - -
43E ASN* 2.9 29.1 + - - +
45E PHE* 3.6 5.7 - - - -
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Residues in contact with HIS 13 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
435D ASP* 4.2 11.9 + - - -
9E PHE* 2.7 43.5 + + + +
12E GLN* 1.3 100.0 - - + +
14E TYR* 1.3 59.2 + - - +
43E ASN* 3.2 9.4 + - - -
44E THR 2.8 26.0 - - - +
45E PHE* 4.0 5.4 - - - -
46E ILE* 2.7 34.7 + - + +
114E HIS* 6.1 0.7 - + - -
115E LEU* 3.5 33.5 - - + +
117E GLN* 3.0 25.4 + - - -
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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
------------------------------------------------------------
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