Contacts of the helix formed by residues 162 - 166 (chain F) in PDB entry 3SRF
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 ASN 162 (chain F).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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160F TYR* 3.0 26.9 + - + -
161F LYS* 1.3 81.6 + - + +
163F ILE* 1.3 62.9 + - - +
164F CYS 3.3 2.7 - - - -
165F LYS* 3.3 49.3 + - - +
166F VAL* 4.0 2.4 + - - +
216F ASP* 2.8 27.5 - - - +
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Residues in contact with ILE 163 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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118F ILE* 5.3 2.2 - - + -
141F ILE* 5.7 0.4 - - + -
143F LEU* 3.9 19.5 - - + -
158F LEU* 3.5 29.4 - - + -
160F TYR* 3.2 35.7 + - + +
161F LYS 3.5 0.8 - - - -
162F ASN* 1.3 76.8 - - - +
164F CYS* 1.3 73.4 + - - +
165F LYS 3.1 0.4 - - - -
166F VAL* 3.1 19.6 + - - +
167F VAL* 3.2 15.0 + - + +
173F ILE* 4.9 3.4 - - + -
192F LEU* 4.2 21.1 - - + -
208F VAL* 5.4 1.1 - - + -
210F LEU* 4.0 36.6 - - + -
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Residues in contact with CYS 164 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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143F LEU* 4.9 1.3 - - - -
161F LYS 5.3 0.4 + - - -
162F ASN 3.3 1.2 - - - -
163F ILE* 1.3 83.8 - - - +
165F LYS* 1.3 61.1 + - + +
166F VAL 3.3 0.7 - - - -
167F VAL* 3.6 21.2 - - - +
187F LYS* 3.8 14.7 + - + +
188F GLY 3.4 18.7 - - - +
189F ALA* 3.5 21.5 - - - +
190F ASP* 4.3 2.7 - - - -
191F PHE 3.6 31.0 - - - -
192F LEU* 3.7 20.4 - - + -
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Residues in contact with LYS 165 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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162F ASN* 3.3 43.4 + - - +
163F ILE 3.1 1.2 - - - -
164F CYS* 1.3 80.2 - - + +
166F VAL* 1.3 61.7 + - + +
167F VAL 3.7 0.4 - - - -
168F GLU* 4.6 5.9 - - - +
189F ALA 6.1 0.2 - - - +
216F ASP* 5.1 0.9 - - - +
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Residues in contact with VAL 166 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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160F TYR* 3.4 38.4 - - + +
162F ASN 4.2 2.5 - - - +
163F ILE 3.3 13.0 - - - +
165F LYS* 1.3 83.2 - - + +
167F VAL* 1.3 57.5 - - - +
168F GLU* 4.0 7.6 + - - +
210F LEU* 4.5 9.2 - - + -
213F ALA* 3.6 20.2 - - + +
214F ALA* 3.4 27.6 + - + +
215F VAL* 4.4 10.1 - - + -
216F ASP* 4.0 14.1 - - - +
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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