Contacts of the helix formed by residues 646 - 652 (chain W) in PDB entry 5IY6
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 646 (chain W).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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469W LYS* 3.8 24.2 - - - +
644W PHE* 3.0 26.2 + - + +
645W GLN* 1.4 66.5 - - + +
647W ARG* 1.4 60.4 + - - +
648W GLU 3.5 2.5 - - - -
649W ASN* 3.3 35.3 + - - +
650W ASP* 3.6 11.5 - - - +
690W ARG* 5.4 7.6 - - - +
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Residues in contact with ARG 647 (chain W).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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637W LEU* 3.7 29.0 - - + +
640W LEU* 3.6 34.8 - - + +
641W ARG* 3.8 44.3 - - - +
644W PHE* 4.4 9.3 - - - +
645W GLN* 2.8 31.2 + - - +
646W ILE* 1.4 75.9 - - - +
648W GLU* 1.3 85.9 + - - +
650W ASP* 3.5 1.3 + - - +
651W PHE* 2.8 35.2 + - + +
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Residues in contact with GLU 648 (chain W).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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637W LEU* 4.6 16.0 - - + +
646W ILE 3.5 1.0 - - - -
647W ARG* 1.3 106.5 + - + +
649W ASN* 1.4 58.8 + - - +
651W PHE* 4.7 2.5 - - - -
652W LEU* 3.0 41.7 + - + +
653W THR* 3.3 12.9 + - + +
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Residues in contact with ASN 649 (chain W).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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646W ILE* 3.3 39.6 + - - +
648W GLU* 1.4 74.2 + - - +
650W ASP* 1.3 82.9 + - - +
653W THR* 3.1 19.4 + - + +
654W PHE* 3.0 33.2 + - - +
690W ARG* 4.9 12.0 - - - +
692W LYS* 5.3 10.8 - - + +
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Residues in contact with ASP 650 (chain W).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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465W ASP* 4.5 2.4 - - - +
466W ILE* 3.8 29.6 - - + +
469W LYS* 2.7 44.3 + - + +
644W PHE* 5.0 6.3 - - + -
646W ILE* 3.6 15.3 - - - +
647W ARG* 3.5 7.3 + - - +
648W GLU 3.4 0.2 - - - -
649W ASN* 1.3 90.7 + - - +
651W PHE* 1.3 62.2 + - - +
654W PHE* 4.1 20.3 - - - +
655W ASP* 4.4 6.6 + - - +
690W ARG* 4.2 11.3 + - - -
692W LYS* 6.0 0.2 - - - +
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Residues in contact with PHE 651 (chain W).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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628W THR* 4.2 16.8 - - + -
633W LEU* 4.2 11.2 - - + -
636W ARG* 3.8 43.1 - - + -
637W LEU* 4.0 38.1 - - + -
640W LEU* 3.3 24.7 - - + -
647W ARG* 2.8 23.6 + - + +
648W GLU* 4.4 0.7 - - - +
650W ASP* 1.3 73.0 - - - +
652W LEU* 1.4 83.5 + - + +
655W ASP* 3.7 15.5 - - - +
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Residues in contact with LEU 652 (chain W).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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626W VAL* 3.9 27.4 - - + +
627W TYR* 3.7 14.4 - - - +
628W THR* 3.2 29.4 - - - +
637W LEU* 5.1 5.4 - - + -
648W GLU* 3.0 29.2 + - + +
650W ASP 3.4 0.2 - - - -
651W PHE* 1.4 103.7 - - + +
653W THR* 1.3 68.9 + - + +
654W PHE 3.5 1.8 - - - -
655W ASP* 3.6 3.0 + - - +
656W ALA* 3.0 24.5 + - - +
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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