Contacts of the helix formed by residues 316 - 322 (chain B) 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 ASN 316 (chain B).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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287B PHE* 4.3 21.1 + - + +
288B VAL 4.8 2.2 - - - +
289B ARG* 3.5 39.2 + - - +
315B GLU* 1.3 81.6 - - - +
317B HIS* 1.3 64.9 + - - +
318B GLU* 3.5 5.4 + - - +
319B GLY* 2.9 22.2 + - - -
320B VAL* 2.9 23.7 + - - +
340B LEU* 3.6 12.7 - - - +
343B GLU* 3.8 25.1 + - + +
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Residues in contact with HIS 317 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
316B ASN* 1.3 75.2 - - - +
318B GLU* 1.3 66.9 + - - +
320B VAL* 2.9 7.3 + - - +
321B LYS* 2.8 38.2 + - + +
343B GLU* 4.5 6.0 - - + +
344B ILE* 4.0 19.8 - - + +
78D ILE* 3.4 27.3 - - + +
79D ASP* 3.0 37.7 + - - -
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Residues in contact with GLU 318 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
289B ARG* 3.6 44.8 + - + +
290B LYS* 5.3 1.9 - - - +
316B ASN* 3.4 7.2 + - - +
317B HIS* 1.3 79.7 + - - +
319B GLY* 1.3 58.2 + - - +
321B LYS* 3.0 8.7 + - + +
322B ARG* 2.8 57.5 + - - +
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Residues in contact with GLY 319 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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288B VAL 3.8 19.7 - - - -
289B ARG* 4.2 2.4 + - - +
314B ILE* 3.9 14.3 - - - +
316B ASN* 2.9 19.9 + - - -
318B GLU* 1.3 75.6 - - - +
320B VAL* 1.3 61.0 + - - +
322B ARG 3.5 0.2 + - - -
323B PHE* 3.2 23.0 + - - +
326B ILE* 3.7 11.5 - - - +
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Residues in contact with VAL 320 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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314B ILE* 3.7 14.8 - - + -
316B ASN 2.9 17.2 + - - +
317B HIS 2.9 8.6 + - - +
319B GLY* 1.3 75.3 - - - +
321B LYS* 1.3 67.1 + - - +
323B PHE* 3.3 20.0 - - - +
340B LEU* 3.7 22.4 - - + -
352B ALA* 4.3 18.2 - - + -
355B MET* 4.1 25.3 - - + +
356B MET* 4.5 1.8 - - + -
359B ARG* 5.3 1.7 + - - -
78D ILE* 3.7 33.9 - - + -
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Residues in contact with LYS 321 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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317B HIS* 2.8 35.4 + - + +
318B GLU* 3.0 10.1 + - - +
320B VAL* 1.3 81.6 - - + +
322B ARG* 1.3 64.0 + - + +
323B PHE 3.3 2.1 + - - -
324B ASP 5.1 0.7 + - - -
359B ARG* 5.7 2.6 + - - -
77D ASP* 3.3 30.6 + - - -
78D ILE* 4.8 8.1 - - - -
79D ASP* 3.5 23.2 + - - +
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Residues in contact with ARG 322 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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289B ARG 3.7 14.1 - - - +
290B LYS* 3.1 31.4 - - - +
318B GLU* 2.8 44.8 + - + +
319B GLY 3.5 0.2 + - - -
320B VAL 3.3 0.2 - - - -
321B LYS* 1.3 79.3 - - + +
323B PHE* 1.3 64.4 + - - +
324B ASP* 3.3 2.7 - - - -
325B GLU* 2.9 60.4 + - - +
326B ILE* 3.1 16.0 + - + +
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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