Contacts of the strand formed by residues 172 - 176 (chain A) in PDB entry 2HU4
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 172 (chain A).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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128A GLU* 4.5 7.5 + - - -
130A ARG* 3.6 45.9 - - - +
159A MET* 3.2 5.6 - - - +
160A SER* 2.7 30.7 + - - +
170A ASN 4.0 1.0 + - - -
171A SER* 1.3 72.8 - - - +
173A PHE* 1.3 72.3 + - - +
174A GLU* 3.0 23.6 + - - +
189A TRP* 4.0 26.3 - - - +
165D GLU* 4.1 8.3 - - - +
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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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157A THR* 3.8 19.7 - - + -
159A MET* 3.9 20.0 - - + -
171A SER 3.8 2.8 + - - -
172A ARG* 1.3 86.9 - - - +
174A GLU* 1.3 64.8 + - - +
175A SER* 3.5 30.3 - - - -
176A VAL* 3.8 2.7 - - + -
206A LYS* 4.4 1.3 - - - -
100D TYR 3.4 21.5 - - - -
101D SER* 3.5 23.6 - - - -
102D LYS 3.4 20.0 - - - -
163D VAL* 3.3 24.8 + - + +
164D GLY* 3.4 30.5 - - - -
165D GLU* 4.3 6.1 + - + +
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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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132A PHE* 3.8 19.7 - - + -
158A LEU* 2.9 34.3 + - + +
159A MET* 3.8 14.8 - - - -
160A SER* 2.5 26.3 + - - +
172A ARG* 3.0 32.2 + - - +
173A PHE* 1.3 81.7 - - - +
175A SER* 1.3 62.2 + - - +
189A TRP* 5.7 2.3 - - - +
191A THR* 3.5 20.0 + - + +
206A LYS* 2.8 27.0 + - - +
209A GLY* 5.8 2.6 - - - -
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Residues in contact with SER 175 (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 THR* 3.6 2.4 - - - -
158A LEU* 2.7 48.1 + - - +
173A PHE* 3.5 17.6 - - - -
174A GLU* 1.3 84.5 - - - +
176A VAL* 1.3 68.1 + - - +
191A THR* 4.8 4.5 - - - -
193A GLY* 4.2 14.8 - - - -
204A VAL* 4.4 13.0 + - - +
206A LYS* 3.8 18.5 + - - +
99D VAL 4.9 2.8 + - - -
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Residues in contact with VAL 176 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
154A PRO 4.2 9.6 - - - +
156A ARG 3.7 13.7 - - - +
157A THR* 4.3 3.8 - - + +
173A PHE* 3.8 2.9 - - + -
175A SER* 1.3 78.1 + - - +
177A ALA* 1.3 65.9 + - - +
193A GLY 4.0 6.1 - - - +
195A SER* 3.6 27.0 - - - +
204A VAL* 5.9 1.0 - - - +
99D VAL* 4.1 21.3 + - + +
100D TYR 4.4 2.1 + - - -
101D SER* 3.6 41.5 - - - +
102D LYS* 3.8 10.5 - - + +
458D TRP* 4.0 17.3 - - + +
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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