Contacts of the helix formed by residues 835 - 841 (chain N) in PDB entry 3EQL
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 835 (chain N).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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827N ILE 2.6 23.7 + - - -
828N LYS* 3.8 2.3 - - - -
829N VAL* 3.1 45.6 + - - -
831N GLY* 4.3 6.5 + - - -
834N THR* 1.3 75.9 - - - +
836N VAL* 1.3 53.2 + - - +
837N GLY* 2.5 15.8 + - - -
838N ARG* 2.6 24.6 + - - +
839N LEU 3.5 3.3 + - - -
863N VAL* 4.5 9.0 - - - +
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Residues in contact with VAL 836 (chain N).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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816N HIS* 3.4 21.1 - - + +
817N GLU* 3.8 13.9 - - + -
820N GLU* 2.9 46.0 - - + +
825N ALA* 4.2 6.3 - - + -
826N PRO 2.8 29.6 - - - +
829N VAL* 4.2 4.4 - - + +
834N THR 3.8 1.2 + - - -
835N SER* 1.3 68.8 - - - +
837N GLY* 1.3 55.6 + - - +
838N ARG 3.2 0.4 - - - -
839N LEU* 3.6 16.4 - - + +
840N LYS* 3.0 31.9 + - + +
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Residues in contact with GLY 837 (chain N).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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827N ILE* 2.8 43.9 + - - +
835N SER* 2.5 8.8 + - - -
836N VAL* 1.3 76.1 - - - +
838N ARG* 1.3 58.1 + - - -
840N LYS* 4.9 2.5 - - - -
841N TYR* 3.8 24.9 + - - -
863N VAL 3.6 14.1 - - - +
864N VAL* 4.1 2.6 - - - +
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Residues in contact with ARG 838 (chain N).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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832N ARG 5.1 1.6 + - - -
833N GLU 2.8 29.1 + - - -
834N THR* 3.6 28.9 - - + +
835N SER* 2.6 21.9 + - - +
837N GLY* 1.3 73.8 - - - -
839N LEU* 1.3 63.4 + - - +
840N LYS 3.4 0.2 - - - -
841N TYR 3.1 17.5 - - - +
842N VAL* 4.2 4.5 - - - +
863N VAL* 3.9 39.7 - - + +
864N VAL* 4.5 3.7 + - - +
865N THR* 3.2 20.0 + - + +
874N GLU* 3.0 53.4 + - - +
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Residues in contact with LEU 839 (chain N).
Click here for Legend to table.
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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64L GLU* 5.5 2.9 - - - +
65L PHE* 4.9 23.9 - - + -
806N PHE* 3.7 40.6 - - + -
812N ALA 5.4 0.2 - - - +
813N LEU* 3.0 28.0 - - + +
816N HIS* 6.5 0.9 - - + -
817N GLU* 2.9 49.2 - - + +
834N THR* 4.0 10.9 + - - +
835N SER 3.5 1.4 + - - -
836N VAL* 3.4 20.2 - - + +
838N ARG* 1.3 82.5 - - - +
840N LYS* 1.3 61.5 + - - +
842N VAL* 4.5 7.8 - - - +
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Residues in contact with LYS 840 (chain N).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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154L GLU* 3.1 41.4 + - + +
168L ASP* 5.2 5.9 - - - +
817N GLU* 4.6 15.9 - - + +
820N GLU* 3.1 40.8 + - - +
821N VAL* 4.0 16.2 - - - +
827N ILE* 5.7 1.1 - - + +
836N VAL* 3.0 16.8 + - + +
837N GLY* 4.4 2.0 - - - +
839N LEU* 1.3 78.9 - - - +
841N TYR* 1.3 103.6 + - + +
842N VAL* 4.2 1.6 + - - +
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Residues in contact with TYR 841 (chain N).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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150L TYR* 5.9 1.6 - - - +
152L PRO* 5.3 10.8 - - + -
154L GLU* 5.3 7.2 + - + -
168L ASP* 5.4 6.7 - - - +
827N ILE* 4.5 25.1 - - + +
837N GLY 3.8 15.6 + - - -
838N ARG 3.1 5.5 - - - +
840N LYS* 1.3 119.5 + - + +
842N VAL* 1.3 63.4 + - - +
843N PHE* 3.7 14.6 - + + -
857N ILE* 4.4 27.2 + - + +
858N VAL* 3.5 30.1 - - + -
864N VAL* 3.2 21.8 - - + +
865N THR* 3.0 19.8 + - - -
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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