Contacts of the helix formed by residues 1496 - 1502 (chain A) in PDB entry 4W8F
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 THR1496 (chain A).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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1378A TRP* 5.1 1.6 - - + -
1381A ALA* 3.3 16.0 + - - -
1382A GLN 3.9 2.4 - - - -
1383A TYR* 3.1 59.9 + - + +
1401A LEU* 4.4 5.1 - - + +
1438A LEU* 3.9 24.9 - - + +
1442A GLN* 4.8 2.0 - - - +
1445A TRP* 5.0 1.3 - - + -
1495A THR* 1.3 73.6 - - - +
1497A ILE* 1.3 67.4 + - - +
1498A GLU 3.1 1.8 - - - -
1499A VAL* 3.0 30.2 + - + +
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Residues in contact with ILE1497 (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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1378A TRP* 3.3 34.6 + - + +
1379A LYS* 4.1 27.4 - - + +
1381A ALA* 4.8 1.2 - - - +
1431A LEU* 6.5 0.2 - - + -
1434A LYS* 4.5 11.2 - - + +
1435A LEU* 3.8 28.5 - - + -
1438A LEU* 4.0 25.4 - - + -
1495A THR* 3.8 10.0 - - + +
1496A THR* 1.3 77.6 - - - +
1498A GLU* 1.3 69.4 + - + +
1499A VAL 2.8 6.2 + - - -
1500A ILE* 3.1 42.2 + - + +
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Residues in contact with GLU1498 (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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1493A LEU* 3.8 37.0 - - + +
1495A THR* 3.6 33.9 - - + +
1496A THR 3.1 0.2 - - - -
1497A ILE* 1.3 86.5 - - + +
1499A VAL* 1.3 62.3 + - - +
1500A ILE* 3.1 3.4 + - - -
1501A HIS* 3.1 30.5 + - - +
1502A ILE 4.0 1.2 + - - -
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Residues in contact with VAL1499 (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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1438A LEU* 5.0 1.3 - - + -
1441A ILE* 3.6 20.1 - - + +
1445A TRP* 4.1 26.0 - - + -
1490A ALA* 4.5 15.3 - - + +
1493A LEU* 4.7 0.7 - - + -
1495A THR 4.2 4.7 - - - +
1496A THR* 3.0 26.5 - - - +
1497A ILE 2.8 0.6 + - - -
1498A GLU* 1.3 78.1 - - - +
1500A ILE* 1.3 60.3 + - - +
1501A HIS 3.2 1.0 + - - -
1502A ILE* 3.2 25.0 + - + +
1505A PHE* 3.5 41.2 - - + +
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Residues in contact with ILE1500 (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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1434A LYS* 3.9 42.8 - - + +
1437A LYS* 2.7 42.8 + - + +
1438A LEU* 3.8 33.2 - - + +
1441A ILE* 3.9 14.4 - - + -
1497A ILE* 3.2 26.0 - - + +
1499A VAL* 1.3 77.5 - - - +
1501A HIS* 1.3 85.1 + - + +
1502A ILE 3.3 1.8 + - - +
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Residues in contact with HIS1501 (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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1434A LYS* 5.2 10.4 - - + +
1498A GLU* 3.1 22.1 + - - +
1500A ILE* 1.3 101.1 - - + +
1502A ILE* 1.3 62.6 + - - +
1503A PRO* 3.4 8.0 - - - +
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Residues in contact with ILE1502 (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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1437A LYS* 4.7 3.5 + - - -
1486A ILE* 5.3 6.3 - - + +
1489A ARG* 3.9 27.4 - - + +
1490A ALA* 3.9 15.0 - - - +
1493A LEU* 3.5 34.3 - - + -
1499A VAL* 3.2 13.5 + - - +
1500A ILE 4.1 5.0 - - - +
1501A HIS* 1.3 78.5 - - - +
1503A PRO* 1.3 81.9 - - + +
1504A ASN 3.4 2.3 + - - -
1505A PHE* 3.3 54.2 + - + +
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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