Contacts of the helix formed by residues 4 - 15 (chain A) in PDB entry 4LT2
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 4 (chain A).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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2A VAL 4.0 0.4 + - - -
3A PHE* 1.3 80.2 - - - +
5A ARG* 1.3 66.2 + - - -
6A CYS 3.5 1.8 - - - -
7A GLU* 3.0 12.5 + - - -
8A LEU* 3.0 19.9 + - - +
38A PHE* 4.5 1.6 - - - -
203A DMS 3.3 25.6 - - - -
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Residues in contact with ARG 5 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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4A GLY* 1.3 73.1 - - - +
6A CYS* 1.3 70.9 + - - +
8A LEU* 3.3 2.6 + - - +
9A ALA* 2.9 25.9 + - - +
29A VAL* 4.1 13.2 - - + +
38A PHE* 3.9 24.7 - - + -
122A ALA 3.6 4.8 + - - -
123A TRP* 2.7 74.8 + - - +
124A ILE* 3.4 3.4 - - - +
125A ARG 3.0 31.9 + - - +
126A GLY* 5.0 1.2 - - - -
127A CYS* 3.8 2.0 - - - -
203A DMS 3.6 14.3 - - + +
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Residues in contact with CYS 6 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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5A ARG* 1.3 96.5 - - - +
7A GLU* 1.3 61.8 + - - +
9A ALA* 3.0 4.1 + - - +
10A ALA* 2.9 25.2 + - - +
126A GLY 4.3 2.5 - - - -
127A CYS* 2.0 62.2 - - + +
128A ARG 5.2 1.1 - - - +
129A LEU* 5.3 0.3 - - - +
203A DMS 3.2 21.9 - - - +
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Residues in contact with GLU 7 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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1A LYS* 2.8 28.0 + - - -
2A VAL 4.4 1.4 - - - +
3A PHE* 3.5 22.1 - - + -
4A GLY 3.0 20.8 + - - +
5A ARG 3.3 0.2 - - - -
6A CYS* 1.3 78.0 - - - +
8A LEU* 1.3 61.8 + - - +
10A ALA* 3.3 7.7 + - - +
11A ALA* 3.1 20.8 + - - +
203A DMS 3.3 20.6 - - + +
206A DMS 5.2 1.7 - - - +
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Residues in contact with LEU 8 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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3A PHE* 3.6 28.1 - - + -
4A GLY 3.0 16.6 + - - +
5A ARG 3.7 3.6 - - - +
7A GLU* 1.3 72.7 - - - +
9A ALA* 1.3 60.6 + - - +
10A ALA 3.0 2.0 - - - -
11A ALA 4.3 0.4 - - - +
12A MET* 2.7 48.6 + - + +
29A VAL* 5.2 1.8 - - + -
32A ALA* 3.7 19.5 - - + -
38A PHE* 3.4 33.9 - - + -
55A ILE* 4.2 20.2 - - + -
88A ILE* 3.9 25.6 - - + -
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Residues in contact with ALA 9 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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5A ARG 2.9 17.8 + - - +
6A CYS* 3.0 14.1 + - - +
8A LEU* 1.3 70.8 - - - +
10A ALA* 1.3 57.9 + - - +
12A MET* 3.4 1.5 + - - -
13A LYS* 2.9 30.0 + - - +
25A LEU* 3.4 22.5 - - + +
29A VAL* 3.8 21.4 - - + +
124A ILE* 4.1 10.5 - - + -
127A CYS* 4.6 2.0 - - - -
129A LEU* 3.8 12.1 - - + -
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Residues in contact with ALA 10 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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6A CYS 2.9 14.6 + - - +
7A GLU* 3.5 8.1 - - - +
8A LEU 3.0 0.2 - - - -
9A ALA* 1.3 75.9 - - - +
11A ALA* 1.3 60.8 + - - +
13A LYS* 3.5 2.3 + - - +
14A ARG* 3.0 23.7 + - - +
128A ARG 5.1 7.0 - - - +
129A LEU* 3.8 15.5 - - + -
206A DMS 3.4 17.4 - - + +
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Residues in contact with ALA 11 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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3A PHE* 4.3 11.2 - - + -
7A GLU 3.1 14.3 + - - +
8A LEU* 3.0 4.6 + - - +
10A ALA* 1.3 73.4 - - - +
12A MET* 1.3 67.3 + - - +
14A ARG 3.3 0.9 + - - -
15A HIS* 2.9 32.2 + - - -
88A ILE* 3.8 19.5 - - + -
201A QPT 4.2 8.3 - - - +
206A DMS 3.5 28.9 - - - +
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Residues in contact with MET 12 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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8A LEU* 2.7 35.8 + - + +
9A ALA 4.3 0.2 - - - -
11A ALA* 1.3 79.3 - - - +
13A LYS* 1.3 59.0 + - - +
15A HIS* 3.5 3.8 + - - +
16A GLY 3.3 4.5 + - - -
17A LEU* 3.1 40.9 + - + +
25A LEU* 3.7 15.5 - - + -
28A TRP* 3.5 45.3 - - + +
29A VAL* 3.9 10.3 - - - -
32A ALA* 4.1 14.4 - - + -
55A ILE* 4.2 20.0 - - + -
56A LEU* 4.3 14.4 - - + -
88A ILE* 4.2 9.0 - - + -
92A VAL* 5.2 0.2 - - - -
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Residues in contact with LYS 13 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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9A ALA 2.9 18.5 + - - +
10A ALA 3.8 4.3 - - - +
11A ALA 3.3 0.2 - - - -
12A MET* 1.3 74.0 - - - +
14A ARG* 1.3 61.5 + - - +
16A GLY* 2.8 21.4 + - - +
17A LEU 4.7 2.0 - - - +
18A ASP* 3.9 30.7 + - + +
25A LEU* 3.7 11.1 - - + +
129A LEU* 2.7 55.3 + - + +
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Residues in contact with ARG 14 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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10A ALA 3.0 18.7 + - - +
11A ALA 3.3 1.1 + - - +
13A LYS* 1.3 76.7 - - - +
15A HIS* 1.3 81.1 + - - +
16A GLY* 3.4 1.4 + - - -
87A ASP* 6.0 0.2 - - - -
89A THR* 5.0 1.2 + - - -
201A QPT 2.7 19.8 - - - -
206A DMS 2.7 52.2 + - + +
208A QPT 3.9 12.2 + - - -
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Residues in contact with HIS 15 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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11A ALA 2.9 32.3 + - - +
12A MET 4.1 2.0 - - - +
14A ARG* 1.3 104.5 + - - +
16A GLY* 1.3 58.1 + - - +
17A LEU 3.7 1.6 - - - -
88A ILE* 4.0 15.8 - - + +
89A THR* 3.1 30.7 + - - -
92A VAL* 3.5 24.6 - - + +
93A ASN* 5.8 0.2 + - - -
96A LYS* 2.8 27.7 + - - -
201A QPT 2.9 21.3 - - - -
206A DMS 4.3 0.2 - - - -
208A QPT 2.9 32.2 + - - +
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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