Contacts of the strand formed by residues 168 - 172 (chain A) in PDB entry 4XQ2
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 168 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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83A LEU* 4.1 14.4 + - - +
86A LEU* 3.8 22.0 - - - +
138A ALA 3.0 18.2 + - - +
139A LEU* 3.3 15.7 - - + +
140A VAL* 2.8 26.3 + - - -
166A GLY 4.0 2.4 + - - -
167A ALA* 1.3 72.1 - - - +
169A VAL* 1.3 66.1 + - - +
189A ASP* 3.7 20.8 - - + +
190A VAL* 4.0 19.1 - - + -
214A ASP* 5.9 1.0 - - - +
217A LEU* 3.8 40.4 - - - +
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Residues in contact with VAL 169 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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140A VAL* 3.4 10.1 - - + +
142A ILE* 3.7 28.3 - - + -
158A VAL 4.8 0.4 - - - +
159A SER* 3.6 28.3 - - - +
162A ALA* 3.5 32.3 - - + -
163A HIS* 4.0 10.1 - - - +
167A ALA 3.9 4.0 - - - +
168A ARG* 1.3 77.2 - - - +
170A VAL* 1.3 64.0 + - - +
188A ALA* 3.8 11.5 - - + +
189A ASP* 2.9 38.3 + - - +
190A VAL* 3.2 6.8 + - - +
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Residues in contact with VAL 170 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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83A LEU* 3.5 29.8 - - + -
139A LEU* 4.1 6.7 - - + -
140A VAL 3.0 16.9 + - - +
141A TRP* 3.6 36.6 - - + -
142A ILE* 2.8 30.3 + - - +
168A ARG 4.2 0.8 - - - -
169A VAL* 1.3 74.6 - - - +
171A VAL* 1.3 65.8 + - - +
172A ASP 4.5 0.7 - - - +
190A VAL* 3.4 17.7 - - + +
192A LEU* 3.8 28.0 - - + -
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Residues in contact with VAL 171 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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142A ILE* 3.1 17.5 - - + +
144A THR* 4.2 19.5 - - + -
155A VAL* 3.8 26.2 - - + -
169A VAL* 4.7 0.2 - - + -
170A VAL* 1.3 80.8 - - - +
172A ASP* 1.3 71.4 + - - +
173A ASN* 3.1 8.0 + - + +
181A GLN* 4.3 3.6 - - - +
183A PRO* 3.7 25.8 - - + -
188A ALA* 3.8 20.6 - - + -
190A VAL 3.0 6.9 + - - -
191A SER* 3.6 2.9 - - - -
192A LEU 2.9 24.6 + - - -
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Residues in contact with ASP 172 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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103A THR* 4.5 4.2 + - - -
141A TRP* 4.5 6.5 + - - +
142A ILE 2.8 10.8 + - - +
143A GLU* 3.6 25.8 - - + +
144A THR 3.8 22.9 + - - +
170A VAL* 4.1 1.4 - - - +
171A VAL* 1.3 68.6 - - - +
173A ASN* 1.3 57.6 + - - +
174A THR* 2.9 30.1 + - - -
175A PHE* 4.9 2.4 + - - +
192A LEU* 3.6 32.2 - - + +
197A LLP 2.7 35.3 + - - +
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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