Contacts of the helix formed by residues 128 - 133 (chain 2) in PDB entry 3TDD
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 128 (chain 2).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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12 THR* 3.1 17.3 - - - -
32 ILE* 4.4 0.2 - - - +
462 SER* 4.2 18.5 + - - -
1272 ALA* 1.3 77.7 - - - +
1292 SER* 1.3 64.6 + - - +
1302 GLY 3.3 0.4 - - - -
1312 SER* 2.7 22.2 + - - -
1322 THR* 4.2 1.6 + - - +
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Residues in contact with SER 129 (chain 2).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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12 THR* 2.8 20.5 + - - +
1282 GLY* 1.3 71.6 - - - +
1302 GLY* 1.3 58.7 + - - -
1312 SER 3.1 1.6 + - - -
1322 THR* 3.1 25.4 + - - +
1332 PHE* 4.3 2.5 - - - -
1662 ASP* 2.7 30.7 + - - -
1682 SER* 3.5 8.4 - - - -
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Residues in contact with GLY 130 (chain 2).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
12 THR 3.2 5.1 + - - -
22 SER* 3.3 20.9 - - - -
1292 SER* 1.3 82.7 + - - +
1312 SER* 1.3 62.4 + - - +
1322 THR 3.2 0.9 + - - -
1332 PHE* 3.3 17.2 + - - +
1342 ILE 4.0 0.9 + - - -
1622 ALA* 3.5 18.2 - - - +
1662 ASP* 3.1 22.6 + - - -
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Residues in contact with SER 131 (chain 2).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
271 ARG* 5.3 1.0 + - - -
22 SER* 4.4 1.8 + - - +
32 ILE 5.1 0.2 - - - -
1262 ILE* 3.9 13.4 - - - +
1272 ALA* 3.3 36.6 + - - -
1282 GLY 2.7 22.6 + - - -
1302 GLY* 1.3 77.9 - - - +
1322 THR* 1.3 66.9 + - - +
1342 ILE* 3.0 28.4 + - - +
1352 TYR* 3.1 22.7 + - - -
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Residues in contact with THR 132 (chain 2).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
251 LEU* 5.8 4.5 - - + -
1282 GLY 4.8 1.3 - - - +
1292 SER* 3.1 19.2 + - - +
1312 SER* 1.3 82.7 + - - +
1332 PHE* 1.3 77.6 + - - +
1342 ILE 3.5 0.3 + - - -
1352 TYR* 3.6 15.9 + - + -
132N THR* 3.8 7.3 - - - -
133N PHE* 3.2 44.0 - - + -
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Residues in contact with PHE 133 (chain 2).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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1292 SER 4.3 4.0 - - - -
1302 GLY 3.3 15.5 + - - +
1312 SER 3.1 0.8 - - - -
1322 THR* 1.3 91.4 - - - +
1342 ILE* 1.3 61.0 + - + +
1352 TYR 3.5 0.4 - - - -
1622 ALA* 4.4 2.9 - - - -
1652 TRP* 3.8 26.0 - - + -
1662 ASP* 3.6 34.8 - - + -
24M SER* 5.7 1.1 - - - -
25M LEU* 4.0 36.1 - - + -
132N THR* 3.2 30.5 - - + -
133N PHE 3.5 9.0 - - - +
135N TYR* 3.8 17.8 + + + -
136N GLY* 3.0 26.9 + - - -
137N TYR 4.5 0.2 + - - -
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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
------------------------------------------------------------
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