Contacts of the helix formed by residues 169 - 174 (chain A) in PDB entry 4DVH
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 TYR 169 (chain A).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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20A PHE* 5.3 0.4 - - - -
24A GLN* 3.1 11.0 - - - -
163A ASP 4.8 0.2 - - - -
164A VAL 3.8 11.9 - - - -
165A TRP 3.6 19.1 - - - -
166A GLU* 3.2 28.1 + - + +
168A ALA* 1.3 78.6 - - - +
170A TYR* 1.4 59.2 + + - +
171A LYS 3.2 0.5 + - - -
172A ASP 3.2 1.7 + - - -
173A PHE* 2.7 45.4 + - + +
174A GLU 3.2 28.0 - - - -
175A ASN* 4.5 3.8 + - - -
177A ARG* 3.1 49.8 + - + +
180A TYR* 3.5 47.8 - + + -
32B HIS* 6.1 0.4 - + - -
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Residues in contact with TYR 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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24A GLN* 3.5 0.6 + - - -
166A GLU* 2.9 33.0 + - + +
167A HIS 4.2 1.6 + - - -
169A TYR* 1.4 78.2 - + - +
171A LYS* 1.3 59.0 + - - +
172A ASP 3.5 0.2 - - - -
174A GLU* 3.1 57.2 + - + +
175A ASN* 3.6 2.1 + - - -
24B GLN* 5.1 0.2 - - - -
27B LEU* 3.7 29.1 - - + +
32B HIS* 2.6 39.9 + + - -
167B HIS* 3.5 27.1 + - + +
170B TYR* 3.9 37.2 - + + -
171B LYS* 4.6 14.9 + - + -
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Residues in contact with LYS 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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21A SER* 4.2 0.7 - - - +
23A ARG* 3.7 20.5 - - + +
24A GLN* 3.0 38.8 + - + +
27A LEU* 3.8 10.5 - - + -
170A TYR* 1.3 79.4 - - - +
172A ASP* 1.3 69.5 + - - +
174A GLU* 4.9 4.0 + - - +
170B TYR* 4.6 10.8 + - + -
171B LYS* 5.2 14.9 + - - +
174B GLU* 2.9 36.5 + - - +
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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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19A VAL 3.5 4.2 - - - +
20A PHE* 3.2 12.8 - - - -
21A SER* 2.5 52.0 + - - -
24A GLN* 3.2 20.9 + - + +
171A LYS* 1.3 83.3 - - - +
173A PHE* 1.3 81.9 + - + +
174A GLU* 3.8 1.6 - - - -
176A ARG* 3.8 9.9 + - - -
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Residues in contact with PHE 173 (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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19A VAL* 3.8 31.2 - - + -
20A PHE* 4.5 3.4 - + - -
169A TYR* 2.7 31.3 + - + +
172A ASP* 1.3 87.9 - - + +
174A GLU* 1.3 69.9 + - - +
176A ARG* 2.9 60.6 + - + +
179A ASP* 4.0 0.2 - - + -
180A TYR* 3.7 44.6 - + + -
183A GLU* 3.4 42.0 - - + -
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Residues in contact with GLU 174 (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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169A TYR* 3.2 22.9 + - - -
170A TYR* 3.1 37.2 + - + +
171A LYS 5.0 3.1 - - - +
172A ASP 5.5 0.9 - - - -
173A PHE* 1.3 81.3 - - - +
175A ASN* 1.3 61.5 + - - +
176A ARG* 3.2 12.3 + - - -
23B ARG* 2.9 42.4 + - - -
27B LEU* 3.5 22.4 - - + +
171B LYS* 2.9 32.3 + - - +
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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