Contacts of the helix formed by residues 197 - 202 (chain D) in PDB entry 3COG
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 197 (chain D).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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15D PHE* 3.6 54.5 - - + +
16D GLN 5.2 5.3 + - - +
18D PHE* 3.7 19.0 - - - +
21D GLN* 4.8 6.3 + - - -
77D ALA 3.7 11.9 + - - -
78D LEU* 3.0 26.4 + - - +
79D ASP* 3.9 22.5 - - - +
80D GLY* 4.2 11.8 - - - -
193D PRO* 3.8 3.8 - - + +
196D GLN* 1.3 76.1 - - - +
198D PRO* 1.4 67.8 - - - +
199D LEU 3.1 2.0 - - - -
200D ALA* 2.9 31.6 + - + +
201D LEU* 3.4 12.9 + - - +
306D GLN 4.9 2.6 + - - -
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Residues in contact with PRO 198 (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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79D ASP* 4.8 1.6 - - - +
169D ILE* 4.4 10.8 - - + -
186D VAL* 3.6 43.3 - - + -
188D ASN* 3.7 13.0 - - + +
196D GLN* 3.4 13.7 - - + +
197D ARG* 1.4 83.3 - - - +
199D LEU* 1.3 62.0 + - - +
201D LEU* 3.0 16.8 + - + +
202D GLY 3.2 0.3 + - - -
203D ALA* 3.0 26.4 + - + +
206D SER* 3.6 27.6 - - - +
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Residues in contact with LEU 199 (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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79D ASP* 4.1 16.8 + - + +
80D GLY 5.2 2.0 - - - +
81D ALA* 3.3 35.7 - - + -
197D ARG 3.1 1.6 + - - -
198D PRO* 1.3 76.4 - - - +
200D ALA* 1.3 60.8 - - - +
201D LEU 3.3 0.9 + - - -
202D GLY* 3.3 11.4 + - - -
203D ALA 3.2 22.7 - - - +
204D ASP 3.4 25.4 - - - +
205D ILE* 3.7 8.5 - - - +
206D SER* 4.0 9.6 - - - +
226D SER* 3.9 18.8 - - - +
227D VAL* 4.0 2.7 - - - +
228D ASN* 3.9 26.3 + - + +
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Residues in contact with ALA 200 (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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15D PHE* 6.1 1.6 - - + -
79D ASP 5.2 0.6 + - - -
170D GLU* 4.4 4.7 - - - +
197D ARG* 2.9 28.7 + - + +
199D LEU* 1.3 78.3 - - - +
201D LEU* 1.3 63.1 + - + +
202D GLY 3.3 1.6 + - - -
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Residues in contact with LEU 201 (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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12D LEU* 5.5 5.2 - - + -
169D ILE* 3.5 44.7 - - + -
170D GLU* 3.1 52.8 + - + +
173D ALA* 3.8 2.9 - - - +
196D GLN* 4.6 1.8 - - + -
197D ARG 3.6 17.5 - - - +
198D PRO 3.0 4.1 + - - +
200D ALA* 1.3 82.5 - - + +
202D GLY* 1.3 56.5 + - - +
203D ALA 3.7 0.7 - - - -
305D ARG 5.4 1.3 - - - +
306D GLN* 3.8 41.5 - - + +
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Residues in contact with GLY 202 (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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173D ALA* 3.5 13.5 - - - +
177D HIS* 3.0 30.7 - - - -
198D PRO 3.2 0.4 + - - -
199D LEU 3.3 9.0 + - - -
200D ALA 3.3 1.8 + - - -
201D LEU* 1.3 78.0 - - - +
203D ALA* 1.3 64.1 + - - +
204D ASP* 4.6 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
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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