Contacts of the helix formed by residues 731 - 736 (chain B) in PDB entry 4EG8
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 PRO 731 (chain B).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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729B GLY 3.3 9.2 - - - +
730B VAL* 1.3 96.8 - - + +
732B GLU* 1.3 68.4 + - - +
733B VAL* 4.3 15.9 - - + +
734B HIS* 2.9 30.5 + - + -
735B ARG* 3.5 1.2 - - - +
746B VAL* 4.6 6.1 - - + -
747B PRO* 6.1 1.6 - - + -
750B THR* 4.3 14.4 - - + +
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Residues in contact with GLU 732 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
722B VAL* 5.6 2.6 - - - +
730B VAL 3.6 1.6 + - - -
731B PRO* 1.3 71.7 - - - +
733B VAL* 1.3 63.4 + - - +
735B ARG* 3.0 57.8 + - - +
736B LYS* 4.4 5.0 + - - +
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Residues in contact with VAL 733 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
731B PRO* 3.0 9.9 + - + +
732B GLU* 1.3 78.8 - - - +
734B HIS* 1.3 85.5 + - + +
736B LYS* 3.5 9.0 - - - +
739B GLU* 5.2 0.7 - - - +
740B ASN* 3.3 14.8 + - - +
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Residues in contact with HIS 734 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
707B ARG* 3.6 20.6 + - - +
711B LEU* 4.4 2.6 - - - +
725B PHE* 5.2 0.5 - - - -
730B VAL* 3.9 14.2 - - + +
731B PRO* 2.9 30.7 + - + +
733B VAL* 1.3 101.4 + - + +
735B ARG* 1.3 57.4 + - - +
736B LYS 3.3 5.3 + - - -
740B ASN* 2.7 33.6 + - - +
745B ALA* 3.1 27.0 + - + -
746B VAL* 4.1 13.2 - - + -
747B PRO* 4.6 8.1 - - + +
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Residues in contact with ARG 735 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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275B VAL* 4.5 4.7 - - - +
711B LEU* 3.0 24.8 - - - +
714B SER* 5.2 1.4 + - - -
722B VAL* 3.7 19.7 + - - +
725B PHE* 3.3 54.3 + - + +
726B ASP* 2.9 31.5 + - - +
729B GLY* 5.0 1.4 - - - -
730B VAL* 2.8 33.4 + - + +
731B PRO 3.5 12.8 + - - +
732B GLU* 3.0 45.5 + - - +
734B HIS* 1.3 77.4 - - - +
736B LYS* 1.3 60.2 + - + +
804B GOL 6.0 1.6 - - - -
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Residues in contact with LYS 736 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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274B ARG* 3.7 27.8 - - - +
275B VAL* 4.0 10.3 - - + +
277B GLY* 5.3 5.8 - - - -
711B LEU* 3.9 4.4 - - - +
732B GLU 4.7 6.1 - - - +
733B VAL 3.5 6.4 - - - +
734B HIS 3.3 2.0 + - - -
735B ARG* 1.3 82.7 - - + +
737B GLY* 1.3 58.4 + - - +
739B GLU* 4.1 1.9 - - - +
740B ASN* 2.7 25.9 + - - -
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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