Contacts of the helix formed by residues 1643 - 1646 (chain B) in PDB entry 2V5P
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 PRO1643 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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1615B ARG 3.1 19.3 - - - +
1616B PRO* 4.3 12.1 - - + +
1618B ALA* 4.1 17.0 - - + -
1622B ASN* 3.3 21.1 - - - +
1642B THR* 1.4 84.6 - - + +
1644B LEU* 1.3 64.9 - - + +
1645B ALA 3.2 1.5 + - - -
1646B CYS* 3.6 23.3 + - - +
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Residues in contact with LEU1644 (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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1527B PHE* 3.4 19.9 - - - +
1528B ASP 4.0 18.9 + - - +
1529B LEU* 4.3 15.6 - - + +
1531B SER* 3.5 27.1 - - - +
1532B LEU* 4.2 25.8 - - + -
1588B LEU* 4.6 1.9 - - - +
1642B THR* 3.0 17.9 - - + +
1643B PRO* 1.3 83.3 - - + +
1645B ALA* 1.3 55.1 + - - +
1646B CYS 3.3 4.2 + - - +
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Residues in contact with ALA1645 (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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1527B PHE* 3.5 17.5 - - - -
1529B LEU* 5.6 0.4 - - + -
1586B GLN 4.3 7.8 - - - +
1588B LEU* 4.0 9.9 - - + +
1612B PHE* 3.8 24.0 - - + +
1613B VAL 3.6 22.9 - - - +
1614B CYS* 3.3 13.3 + - - +
1642B THR* 3.2 16.7 + - - +
1643B PRO 3.2 1.0 - - - -
1644B LEU* 1.3 78.1 - - - +
1646B CYS* 1.3 58.6 + - - +
1647B GLU 4.2 0.7 + - - -
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Residues in contact with CYS1646 (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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1525B HIS* 3.7 10.4 + - - -
1527B PHE* 3.6 5.8 - - - -
1614B CYS* 2.0 48.7 - - - -
1615B ARG 3.1 25.1 - - - -
1616B PRO* 4.0 5.4 - - + -
1642B THR 3.6 5.8 - - - -
1643B PRO* 3.6 14.5 - - + +
1644B LEU 3.3 5.0 + - - +
1645B ALA* 1.3 77.0 - - - +
1647B GLU* 1.3 61.5 + - - +
1648B GLN 4.3 9.9 - - - +
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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