Contacts of the helix formed by residues 301 - 307 (chain D) in PDB entry 3E8C
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 ASP 301 (chain D).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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299D THR 3.5 5.5 + - - +
300D THR* 1.3 69.6 - - - +
302D TRP* 1.3 63.1 + - - +
303D ILE* 3.3 12.5 + - - +
304D ALA* 3.0 35.2 + - + +
305D ILE* 3.0 25.4 + - - +
310D VAL* 5.0 5.0 - - + +
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Residues in contact with TRP 302 (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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8D LYS* 5.4 10.5 - - - -
148D ALA* 3.3 30.3 - - + -
151D VAL* 3.8 26.9 - - + -
152D LEU* 3.5 35.7 - - + +
292D LYS* 3.4 57.7 + - + +
297D PHE* 3.7 40.3 + + - -
300D THR* 3.4 25.7 + - + +
301D ASP* 1.3 72.7 + - - +
303D ILE* 1.3 69.7 + - + +
305D ILE* 3.5 2.6 + - + +
306D TYR* 3.2 18.5 + - - +
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Residues in contact with ILE 303 (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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11D GLU* 4.3 31.4 - - + +
15D VAL* 6.6 0.2 - - + -
301D ASP* 3.3 8.4 + - - +
302D TRP* 1.3 81.2 - - + +
304D ALA* 1.3 60.2 + - - +
306D TYR* 3.4 8.5 + - + +
307D GLN* 2.9 54.1 + - + +
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Residues in contact with ALA 304 (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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301D ASP* 3.0 35.9 + - + +
303D ILE* 1.3 77.5 - - - +
305D ILE* 1.3 56.3 + - - +
307D GLN* 3.5 6.3 + - - -
308D ARG 3.0 5.7 + - - -
309D LYS* 2.8 44.4 + - + -
310D VAL* 3.6 15.7 + - + +
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Residues in contact with ILE 305 (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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102D PHE* 3.3 14.5 - - + -
145D PHE* 4.2 20.9 - - + +
148D ALA* 3.3 29.2 - - + -
149D GLN* 3.8 27.6 - - + +
152D LEU* 4.2 12.1 - - + -
179D TYR* 3.7 9.0 - - + -
300D THR* 3.8 13.5 - - + -
301D ASP 3.0 17.7 + - - +
302D TRP* 3.8 4.9 - - - +
304D ALA* 1.3 74.7 - - - +
306D TYR* 1.3 65.4 + - - +
308D ARG* 3.0 13.9 + - - -
310D VAL* 3.8 20.4 - - + -
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Residues in contact with TYR 306 (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 PHE* 3.5 29.5 - + - -
100D PHE* 3.8 26.9 - + - -
101D PRO* 3.3 46.4 - - + +
102D PHE* 3.9 9.2 - + - -
152D LEU* 4.1 10.1 - - + +
302D TRP 3.2 12.2 + - - +
303D ILE* 3.4 11.2 + - + +
305D ILE* 1.3 79.4 - - - +
307D GLN* 1.3 75.2 + - + +
308D ARG* 3.1 8.5 + - - +
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Residues in contact with GLN 307 (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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303D ILE* 2.9 37.1 + - + +
304D ALA* 3.9 7.6 - - - +
305D ILE 3.2 0.2 - - - -
306D TYR* 1.3 89.8 - - + +
308D ARG* 1.3 68.2 + - - +
309D LYS* 2.9 47.2 + - + +
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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