Contacts of the helix formed by residues 246 - 250 (chain A) in PDB entry 2VGZ
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 PHE 246 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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194A LEU* 5.5 0.4 - - + -
196A THR* 3.9 16.6 - - + -
198A PRO* 4.4 3.1 - - + -
208A LEU* 3.7 31.9 - - + -
213A LYS* 3.5 40.8 - - + +
216A ILE* 3.9 24.9 - - + -
217A TYR* 4.3 3.7 - + - -
227A ILE* 3.8 31.2 - - + -
229A GLU* 2.8 38.5 + - + +
245A THR* 1.3 72.0 - - - +
247A LEU* 1.3 61.8 + - - +
249A MET* 3.2 25.0 + - - +
250A ASP* 3.2 14.2 + - - +
255A VAL* 3.7 20.6 - - + +
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Residues in contact with LEU 247 (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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91A GLN* 4.3 3.1 - - + +
95A HIS* 4.1 14.6 - - + -
97A PRO* 3.7 40.3 - - + +
98A PRO* 3.7 0.9 - - - +
99A THR* 5.5 4.3 - - + -
109A MET* 4.9 4.5 - - + -
229A GLU* 3.2 13.3 + - - +
245A THR* 3.1 8.0 - - - +
246A PHE* 1.3 78.7 - - - +
248A SER* 1.3 61.3 + - - +
249A MET 3.2 0.5 + - - -
250A ASP* 3.3 24.7 + - + +
255A VAL* 3.9 22.0 - - + +
257A ARG* 3.9 21.8 - - + -
275A THR* 3.8 32.3 - - + +
276A GLY* 5.4 1.8 - - - -
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Residues in contact with SER 248 (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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95A HIS* 3.1 33.5 - - - +
96A ASN 4.4 1.9 - - - +
97A PRO* 4.7 0.9 - - - -
98A PRO* 3.7 14.2 - - - +
244A PRO* 3.8 13.0 - - - +
245A THR* 2.7 40.1 + - - -
247A LEU* 1.3 78.1 - - - +
249A MET* 1.3 57.8 + - - +
250A ASP 3.5 0.4 - - - -
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Residues in contact with MET 249 (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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98A PRO* 4.4 3.6 - - - -
210A SER* 4.7 2.5 - - - +
213A LYS* 3.8 28.7 - - + +
214A LYS* 3.9 32.8 - - + +
217A TYR* 3.5 35.1 - - + -
244A PRO* 4.5 15.7 - - + -
245A THR 3.6 17.0 - - - +
246A PHE* 3.5 16.2 - - - +
247A LEU 3.2 0.2 - - - -
248A SER* 1.3 79.2 + - - +
250A ASP* 1.3 57.9 + - - +
251A VAL* 2.9 18.6 + - - +
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Residues in contact with ASP 250 (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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98A PRO* 3.7 12.8 - - + +
99A THR* 3.6 16.1 + - - +
217A TYR* 2.5 31.8 + - - -
246A PHE 3.2 9.3 + - - +
247A LEU* 3.3 23.9 + - + +
248A SER 3.5 1.0 - - - -
249A MET* 1.3 72.8 - - - +
251A VAL* 1.3 63.6 + - - +
253A GLY* 3.0 12.7 + - - -
254A ARG* 3.0 21.7 + - - +
255A VAL* 2.9 35.6 + - + +
277A PRO* 5.4 0.3 - - - +
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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