Contacts of the helix formed by residues 162 - 167 (chain A) in PDB entry 4PIM
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 SER 162 (chain A).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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58A PRO* 6.0 0.4 - - - -
160A LEU 3.2 2.0 - - - -
161A GLY* 1.3 80.3 - - - +
163A THR* 1.3 58.6 + - - +
164A ILE* 3.0 3.6 - - - +
165A GLY* 2.9 19.6 + - - -
166A ASN 4.1 0.3 + - - -
192A GLY 3.2 18.9 + - - -
193A THR* 3.6 3.1 - - - -
194A ASP* 2.9 45.1 + - - +
284A SER* 5.3 0.9 + - - -
285A CYS 4.4 3.6 + - - -
286A LYS* 5.0 3.2 + - - -
287A PHE* 4.1 12.8 - - - -
314A PHE* 3.9 5.5 - - - -
401A ACT 3.9 11.6 - - - +
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Residues in contact with THR 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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47A PHE* 6.1 1.0 - - - -
142A PHE* 4.5 14.1 - - + -
159A PHE* 3.7 30.1 + - + -
160A LEU 3.2 14.5 + - - -
161A GLY* 3.1 5.0 + - - -
162A SER* 1.3 77.6 - - - +
164A ILE* 1.3 62.5 + - - +
166A ASN* 3.0 37.9 + - + +
167A LEU* 4.3 3.3 + - - +
401A ACT 4.4 3.7 - - - +
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Residues in contact with ILE 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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159A PHE* 3.7 24.1 + - + +
162A SER* 3.0 2.3 - - - -
163A THR* 1.3 78.6 - - - +
165A GLY* 1.3 61.6 + - - +
166A ASN 3.1 0.2 - - - -
167A LEU* 3.2 17.2 + - + +
172A ARG* 3.5 28.5 - - + -
175A PHE* 4.2 10.5 - - + -
176A LEU* 3.6 42.6 - - + -
191A LEU* 3.8 18.8 - - + -
192A GLY 3.7 21.5 - - - +
193A THR* 4.1 9.2 - - + -
287A PHE* 4.1 16.8 - - + -
295A GLU* 5.7 0.2 - - - +
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Residues in contact with GLY 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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162A SER* 2.9 14.3 + - - -
164A ILE* 1.3 75.5 - - - +
166A ASN* 1.3 61.2 + - - +
167A LEU 3.1 6.8 + - - -
283A VAL 3.8 1.2 - - - +
284A SER* 3.7 3.8 - - - -
285A CYS* 2.8 55.3 + - - +
287A PHE* 4.1 9.9 - - - -
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Residues in contact with ASN 166 (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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35A PRO* 6.0 1.6 - - - +
39A TYR* 4.7 7.1 + - - -
163A THR* 3.0 29.6 + - + +
165A GLY* 1.3 77.5 - - - +
167A LEU* 1.3 64.6 + - + +
168A THR* 3.9 2.3 + - - +
282A GLU* 3.8 25.0 + - - +
283A VAL* 3.1 31.5 - - - +
401A ACT 3.4 34.4 - - - +
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Residues in contact with LEU 167 (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 PHE* 4.4 18.6 - - + -
143A GLU* 3.7 31.2 - - + +
159A PHE* 5.3 0.4 - - + -
163A THR 4.9 2.7 - - - +
164A ILE* 3.2 21.4 + - + +
165A GLY 3.1 4.9 - - - +
166A ASN* 1.3 82.7 - - + +
168A THR* 1.3 59.9 + - - +
171A PRO* 4.2 8.5 - - + +
172A ARG* 2.8 43.7 + - + +
175A PHE* 3.7 39.9 - - + -
285A CYS* 3.9 0.4 - - - -
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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