Contacts of the helix formed by residues 507 - 509 (chain C) in PDB entry 2VGB
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 HIS 507 (chain C).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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89C SER* 2.6 36.1 + - - +
113C ASN* 3.5 47.5 - - + +
114C ILE* 4.0 19.1 - - + -
149C ARG* 6.4 0.9 - - + -
150C PRO* 2.8 27.7 + - + +
152C ALA 4.3 0.4 - - - -
400C ASP 5.0 0.2 - - - +
401C CYS* 3.6 2.9 - - - -
503C ALA 4.1 6.0 + - - -
504C ARG* 3.3 24.4 + - - +
505C GLN 3.1 0.6 - - - -
506C VAL* 1.3 77.7 - - - +
508C LEU* 1.3 59.4 + - - +
509C CYS 3.2 2.9 + - - -
512C VAL 4.6 7.0 + - - -
514C PRO* 3.6 30.9 - - + +
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Residues in contact with LEU 508 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
114C ILE* 3.8 23.8 - - + -
282C ILE* 3.9 22.2 - - + -
284C PHE* 4.8 7.0 - - + -
309C LYS* 4.0 22.9 - - + -
311C ILE* 4.0 28.3 - - + -
331C ASP* 6.0 0.7 - - + -
366C PRO* 3.1 30.6 - - + +
368C VAL* 5.1 4.5 - - + -
400C ASP* 3.1 23.4 - - - +
401C CYS* 3.8 13.4 - - - -
505C GLN 3.1 16.9 + - - +
506C VAL 2.9 0.4 + - - -
507C HIS* 1.3 77.9 - - - +
509C CYS* 1.3 59.7 + - - +
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Residues in contact with CYS 509 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
87C SER 4.7 0.7 - - - +
89C SER* 5.1 1.4 + - - -
366C PRO* 4.3 12.8 - - - -
400C ASP* 4.0 3.8 - - - -
482C GLN* 3.8 42.4 - - - -
485C SER* 3.5 15.3 - - - +
505C GLN 5.5 0.4 - - - -
506C VAL* 3.0 19.4 + - + +
507C HIS 3.2 4.6 - - - +
508C LEU* 1.3 82.2 - - - +
510C ARG* 1.3 69.8 + - - +
511C GLY 3.2 2.4 + - - -
512C VAL* 3.2 23.4 + - + +
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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