Contacts of the helix formed by residues 630 - 635 (chain A) in PDB entry 2X7G
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 TYR 630 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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554A GLU* 5.9 1.7 - - - +
566A VAL 4.2 6.1 - - - -
567A LEU 3.6 14.1 - - - +
568A ILE 2.7 14.7 + - - +
569A GLY* 3.5 31.6 - - - -
606A ASP* 6.1 1.1 - - - -
629A LYS* 1.3 105.3 + - + +
631A SER* 1.3 65.5 + - - +
632A ARG 3.2 2.9 - - - -
633A GLU* 3.0 43.8 + - - +
634A PHE* 3.6 14.8 - + + -
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Residues in contact with SER 631 (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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568A ILE* 3.4 9.6 + - - +
625A ALA 2.6 28.7 + - - -
626A LEU* 3.3 19.5 - - - -
628A GLY* 3.0 32.5 + - - -
630A TYR* 1.3 78.6 - - - +
632A ARG* 1.3 58.2 + - - +
634A PHE* 3.2 5.5 + - - -
635A PHE* 3.0 36.8 + - - +
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Residues in contact with ARG 632 (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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626A LEU* 5.8 2.2 - - - -
628A GLY 4.7 0.8 + - - -
629A LYS 5.3 0.4 + - - -
630A TYR 3.1 1.4 + - - -
631A SER* 1.3 75.8 - - - +
633A GLU* 1.3 60.2 + - - +
634A PHE 3.3 0.2 - - - -
635A PHE 3.7 6.1 - - - +
637A ARG 6.0 0.2 - - - +
642A ARG* 2.8 34.1 + - - +
1700A SO4 2.9 41.8 + - - +
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Residues in contact with GLU 633 (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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607A GLU* 4.7 1.0 - - - +
629A LYS 5.5 0.4 - - - +
630A TYR* 3.0 42.4 + - - +
632A ARG* 1.3 77.4 - - - +
634A PHE* 1.3 79.0 + - + +
642A ARG* 3.6 16.7 - - - +
643A HIS* 4.4 10.6 + - - -
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Residues in contact with PHE 634 (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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567A LEU 3.6 22.0 - - - -
568A ILE* 4.8 4.7 - - + -
604A SER* 4.2 9.2 - - - -
606A ASP* 3.5 36.3 - - + -
607A GLU* 3.6 27.8 - - + +
610A ILE* 3.4 26.7 - - + -
630A TYR* 3.6 30.3 - + + -
631A SER* 3.2 4.5 + - - -
633A GLU* 1.3 98.1 - - + +
635A PHE* 1.3 72.8 + - + +
641A LEU* 3.3 13.0 - - + +
642A ARG* 2.9 26.9 + - - +
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Residues in contact with PHE 635 (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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568A ILE* 4.2 14.4 - - + -
610A ILE* 3.9 24.5 - - + -
614A ILE* 4.9 4.5 - - + -
620A ILE* 4.2 16.2 - - + -
625A ALA* 3.5 34.8 - - + -
626A LEU* 3.8 11.0 - - + +
631A SER* 3.0 20.0 + - - +
632A ARG* 3.4 10.2 - - - +
634A PHE* 1.3 86.5 - + + +
636A ASN* 1.3 69.6 + - - +
639A GLY* 3.5 23.6 - - - -
640A GLU 3.2 7.0 - - - +
641A LEU* 3.8 27.1 - - + -
642A ARG* 3.2 19.9 + - - -
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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
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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