Contacts of the helix formed by residues 161 - 165 (chain N) in PDB entry 3H1J
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 THR 161 (chain N).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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158N PHE* 2.9 22.1 + - - +
159N GLN 3.8 5.8 - - - +
160N GLY* 1.3 83.6 + - - +
162N ALA* 1.3 62.9 + - - +
163N LEU 3.2 5.4 + - - -
164N ALA* 3.5 13.7 + - - +
165N ARG* 4.5 9.6 + - - +
233N ARG 5.1 0.4 - - - -
234N CYS* 2.9 27.8 - - - +
235N ARG* 3.2 33.9 - - + +
21R ALA* 3.3 16.8 - - + +
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Residues in contact with ALA 162 (chain N).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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45N SER* 4.4 6.8 + - - +
46N ARG* 3.5 33.9 - - + +
48N GLU 4.5 1.8 - - - +
92N ARG* 5.7 0.2 - - - -
161N THR* 1.3 72.7 - - - +
163N LEU* 1.3 62.2 + - - +
164N ALA 3.0 6.7 + - - -
165N ARG* 3.2 41.5 + - - +
231N LEU* 5.9 0.9 - - + -
232N PRO* 5.9 7.4 - - + -
234N CYS* 3.8 4.8 - - - -
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Residues in contact with LEU 163 (chain N).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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46N ARG* 3.7 32.3 - - + +
92N ARG* 3.4 49.8 + - + +
93N GLU* 5.2 0.2 - - - +
154N HIS* 3.6 10.8 - - + +
158N PHE* 3.8 18.1 - - + +
161N THR* 3.2 4.1 + - - +
162N ALA* 1.3 76.9 - - - +
164N ALA* 1.3 56.6 + - - +
165N ARG 3.1 5.8 + - - -
234N CYS* 3.5 25.3 - - + -
314N TYR* 4.2 22.2 - - + -
317N THR* 3.4 32.8 - - + -
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Residues in contact with ALA 164 (chain N).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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151N ASP 5.1 0.4 - - - +
154N HIS* 3.5 16.2 - - - +
155N ALA* 3.7 26.2 + - - +
158N PHE 3.1 30.1 - - - +
159N GLN* 3.8 4.3 - - - +
160N GLY 4.4 1.3 - - - +
161N THR* 3.5 10.4 + - - +
162N ALA 3.0 2.0 - - - -
163N LEU* 1.3 79.0 - - - +
165N ARG* 1.3 61.5 + - - +
166N THR* 5.7 0.7 - - - +
5R VAL 5.8 0.3 - - - +
6R THR* 6.0 2.4 - - - +
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Residues in contact with ARG 165 (chain N).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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45N SER* 4.3 6.2 + - - +
48N GLU 3.7 18.6 + - - -
49N ASN* 3.9 2.6 - - - +
50N GLU* 3.4 42.8 - - - +
53N ASN* 3.4 33.2 - - - +
92N ARG* 3.0 27.7 + - - +
161N THR 4.6 6.6 + - - +
162N ALA* 3.5 35.4 + - - +
163N LEU 3.1 1.9 - - - -
164N ALA* 1.3 83.3 - - - +
166N THR* 1.3 71.0 + - - +
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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