Contacts of the helix formed by residues 157 - 165 (chain A) in PDB entry 2VL7
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 GLN 157 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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153A PRO* 2.8 37.0 + - + +
156A PHE* 1.3 74.2 - - + +
158A LYS* 1.3 67.1 + - - +
159A PRO* 3.2 10.3 - - + +
160A ILE* 2.7 34.1 + - + +
161A ARG* 2.9 13.0 + - - -
193A TRP* 3.2 32.7 + - - +
194A PHE* 3.8 25.2 - - - +
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Residues in contact with LYS 158 (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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156A PHE 3.6 5.7 + - - -
157A GLN* 1.3 69.7 - - - +
159A PRO* 1.3 65.8 - - + +
161A ARG* 3.5 14.4 + - - +
162A ASN* 3.0 56.4 + - - +
194A PHE* 5.6 0.2 - - - -
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Residues in contact with PRO 159 (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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157A GLN* 3.3 15.0 - - + +
158A LYS* 1.3 96.1 - - + +
160A ILE* 1.3 65.6 + - + +
162A ASN* 3.9 6.7 + - + +
163A SER* 3.5 19.4 + - - -
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Residues in contact with ILE 160 (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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153A PRO* 3.9 24.9 - - + +
154A TYR* 3.6 42.6 - - + -
157A GLN* 2.7 25.2 + - + +
159A PRO* 1.3 75.5 - - + +
161A ARG* 1.3 63.9 + - - +
163A SER* 2.6 25.3 + - - +
164A VAL* 3.2 9.3 + - + +
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Residues in contact with ARG 161 (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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153A PRO 4.3 0.2 + - - -
154A TYR 3.3 24.1 + - - +
155A LEU* 3.1 43.9 + - - +
157A GLN 2.9 13.0 + - - +
158A LYS* 3.7 15.4 - - - +
160A ILE* 1.3 77.5 - - - +
162A ASN* 1.3 66.1 + - - +
164A VAL 3.3 0.5 + - - -
165A PHE* 2.7 49.6 + - + +
174A LEU* 3.7 11.3 - - + +
314A ASP 4.1 5.8 + - - -
315A ALA* 2.9 37.5 + - - +
317A ASN 4.7 2.6 + - - -
318A VAL* 3.6 20.4 - - - +
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Residues in contact with ASN 162 (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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158A LYS* 3.0 46.0 + - - +
159A PRO* 4.2 6.4 - - + +
160A ILE 3.3 0.4 - - - -
161A ARG* 1.3 89.9 + - - +
163A SER* 1.3 59.7 + - - +
165A PHE 4.2 7.0 - - - +
166A CYS* 3.5 23.8 - - - +
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Residues in contact with SER 163 (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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139A ARG* 3.4 19.7 + - - -
159A PRO 3.5 10.7 + - - -
160A ILE* 2.6 26.8 + - - +
162A ASN* 1.3 79.1 - - - +
164A VAL* 1.3 64.9 + - - +
166A CYS* 3.7 13.3 - - - -
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Residues in contact with VAL 164 (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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81A LEU* 4.3 18.8 - - + -
139A ARG* 4.1 24.9 + - + +
150A MET* 4.3 3.6 - - + -
154A TYR* 3.7 29.4 - - + -
160A ILE* 3.2 16.2 + - + +
163A SER* 1.3 84.8 - - - +
165A PHE* 1.3 88.7 + - + +
166A CYS* 3.4 3.7 + - - -
171A CYS* 4.0 4.9 - - - +
172A LEU* 3.7 25.0 + - + +
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Residues in contact with PHE 165 (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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55A LEU* 3.8 18.6 - - + -
57A PHE* 4.2 5.6 - + - -
150A MET* 3.8 23.3 - - + -
154A TYR 3.5 23.1 - - - -
155A LEU* 5.4 0.2 - - + -
161A ARG* 2.7 28.4 + - + +
162A ASN* 4.1 5.5 - - - +
164A VAL* 1.3 83.3 - - + +
166A CYS* 1.3 66.3 + - - +
172A LEU* 3.3 43.3 - - + +
173A LYS* 5.1 0.4 - - - -
174A LEU* 3.6 54.1 - - + +
177A TYR* 5.1 2.2 - + - -
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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