Contacts of the strand formed by residues 77 - 79 (chain 2) in PDB entry 3EXG
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 ILE 77 (chain 2).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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132 MET* 4.5 17.0 - - + -
172 LEU* 5.3 5.4 - - + -
232 VAL* 3.9 13.9 - - + -
242 PHE 2.6 18.9 + - - +
252 LEU* 3.5 18.9 - - + +
262 LEU* 3.0 25.7 + - - +
752 ARG 4.3 4.5 - - - +
762 PRO* 1.3 77.6 - - - +
782 CYS* 1.3 60.0 + - - +
1132 VAL* 3.4 17.9 - - + +
1152 ARG* 3.9 29.6 - - + -
1572 ILE* 5.3 1.3 - - + -
1612 ILE* 3.4 36.8 - - + -
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Residues in contact with CYS 78 (chain 2).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
262 LEU* 3.6 5.6 - - + -
622 PHE* 3.6 31.4 - - - -
632 ALA* 4.0 15.3 - - - -
662 ALA* 3.7 21.3 - - + -
762 PRO 4.0 0.6 - - - -
772 ILE* 1.3 74.5 - - - +
792 GLU* 1.3 62.3 + - - +
802 PHE* 4.1 8.3 + - - -
1122 ILE* 4.7 1.5 - - + +
1132 VAL 2.7 11.1 + - - +
1142 PHE* 3.4 29.7 - - + +
1152 ARG* 3.1 26.2 + - - +
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Residues in contact with GLU 79 (chain 2).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
252 LEU* 4.1 13.3 - - + +
262 LEU 2.9 17.2 + - - +
272 GLY* 3.7 14.6 - - - -
282 GLU 4.0 9.2 + - - +
302 VAL* 3.6 23.2 - - + +
352 GLY* 5.7 1.2 - - - -
362 ALA* 5.2 9.8 + - - +
372 TYR* 5.3 3.8 - - - -
392 VAL* 5.5 1.0 - - - +
402 SER* 4.5 8.5 + - - -
622 PHE* 3.9 8.7 - - - -
782 CYS* 1.3 74.2 - - - +
802 PHE* 1.3 79.0 + - - +
812 MET* 3.6 10.4 + - - +
1152 ARG* 2.7 48.1 + - + +
1162 GLY* 4.5 1.5 - - - -
1172 PRO* 5.2 1.7 - - - +
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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
------------------------------------------------------------
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