Contacts of the helix formed by residues 668 - 672 (chain C) in PDB entry 6T8O
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 GLY 668 (chain C).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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398C ARG* 4.2 12.1 + - - -
664C LEU* 5.4 0.2 - - - -
667C GLY* 1.3 75.1 - - - -
669C ALA* 1.3 63.2 + - - +
670C GLU* 3.0 22.3 + - - -
671C GLN* 3.7 18.0 + - - +
672C LEU* 4.7 1.7 - - - +
679C LEU* 3.4 18.7 - - - +
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Residues in contact with ALA 669 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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651C ALA* 4.3 12.8 - - + -
652C PHE 3.7 8.4 - - - +
653C GLN* 4.0 0.5 - - - -
654C VAL* 3.8 18.3 + - + -
660C SER* 3.0 25.3 + - - +
663C ILE* 5.3 0.2 - - + -
664C LEU* 3.8 20.1 - - + +
668C GLY* 1.3 77.1 - - - +
670C GLU* 1.3 61.2 + - - +
671C GLN 3.4 0.7 + - - -
672C LEU* 3.6 19.1 + - + +
679C LEU* 3.7 11.1 - - + +
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Residues in contact with GLU 670 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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653C GLN* 4.3 9.1 + - - +
654C VAL* 3.7 24.2 - - - +
655C SER 4.3 6.1 - - - +
656C SER 4.1 16.8 - - - +
657C LYS* 3.3 39.1 - - + +
660C SER* 4.0 4.7 - - - -
668C GLY* 3.0 24.9 + - - -
669C ALA* 1.3 72.4 + - - +
671C GLN* 1.3 86.0 + - - +
672C LEU 3.2 11.1 + - - +
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Residues in contact with GLN 671 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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385C ALA* 4.9 12.3 - - - +
386C LYS* 5.9 3.7 + - - +
396C SER* 3.2 25.9 + - - +
397C VAL 2.9 27.6 + - - +
398C ARG* 4.2 23.0 - - + +
399C VAL 5.6 0.9 - - - +
657C LYS* 5.8 0.2 - - - +
668C GLY* 3.7 13.7 + - - +
669C ALA 3.3 1.8 - - - -
670C GLU* 1.3 108.7 + - - +
672C LEU* 1.3 66.4 + - - +
673C LEU* 4.4 2.4 - - - +
690C ARG* 4.6 5.0 + - - -
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Residues in contact with LEU 672 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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395C ILE* 5.7 1.0 - - - +
396C SER* 3.6 9.0 + - - -
398C ARG* 4.9 3.6 - - - -
651C ALA 3.6 19.3 - - - +
652C PHE 3.7 6.1 - - - -
653C GLN* 3.7 27.6 + - + +
668C GLY 4.7 0.7 - - - +
669C ALA 3.6 20.2 - - - +
670C GLU 3.2 5.0 - - - +
671C GLN* 1.3 84.3 - - - +
673C LEU* 1.3 64.6 + - - +
674C GLY 3.7 0.9 - - - -
677C ASP* 3.4 32.8 - - + +
679C LEU* 3.8 30.3 - - + -
690C ARG* 3.6 32.5 - - + +
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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