Contacts of the helix formed by residues 1418 - 1422 (chain A) in PDB entry 5IYB
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 GLY1418 (chain A).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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1408A ARG* 3.7 15.6 + - - -
1412A MET* 4.7 9.6 - - - +
1413A ALA* 3.1 26.0 - - - -
1415A THR 2.4 22.5 + - - -
1416A ARG 3.2 0.2 - - - -
1417A HIS* 1.3 70.6 - - - +
1419A VAL* 1.3 63.4 + - - -
1420A ASN 3.4 0.4 - - - -
1421A ARG* 3.4 11.6 + - - +
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Residues in contact with VAL1419 (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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866A LYS 5.2 1.8 - - - +
867A SER* 4.0 32.3 - - - +
1412A MET* 5.2 11.9 - - + -
1413A ALA 3.2 7.8 + - - +
1414A ILE* 3.7 11.2 - - + +
1415A THR 3.1 6.1 + - - +
1418A GLY* 1.3 66.8 - - - -
1420A ASN* 1.3 62.3 + - - +
1421A ARG 3.1 5.2 - - - -
1422A GLN* 3.2 29.0 + - + +
1424A THR* 4.7 3.7 + - - +
1429A LYS* 4.9 0.5 - - - +
1432A PHE* 3.7 39.7 - - + -
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Residues in contact with ASN1420 (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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138A LYS* 5.9 0.5 + - - -
1416A ARG* 3.1 27.0 + - + +
1418A GLY 3.4 1.0 - - - -
1419A VAL* 1.3 81.1 - - + +
1421A ARG* 1.3 72.5 + - - +
1422A GLN 3.4 0.4 - - - -
1429A LYS* 3.2 56.8 + - - +
1432A PHE* 4.0 16.5 - - - +
1434A GLU* 3.6 15.0 + - - +
1438A VAL* 3.4 26.9 - - - +
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Residues in contact with ARG1421 (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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138A LYS* 5.4 11.8 - - - +
1408A ARG* 2.4 40.0 + - - +
1416A ARG* 3.1 19.7 + - - +
1417A HIS* 3.4 35.0 + - - +
1418A GLY 3.4 2.7 + - - +
1419A VAL 3.1 1.6 - - - -
1420A ASN* 1.3 95.2 + - - +
1422A GLN* 1.3 61.7 - - - +
1423A ASP* 3.6 4.2 - - - +
1429A LYS* 5.4 1.8 - - - +
1434A GLU* 3.3 30.7 + - - -
1441A GLU* 5.9 1.0 + - - -
47X G 6.2 0.8 - - - -
48X A 4.2 18.3 + - - +
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Residues in contact with GLN1422 (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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881A ASN* 5.7 3.6 - - - +
883A ILE* 4.5 11.9 - - + +
885A GLN* 4.6 8.1 + - - +
1408A ARG* 3.1 30.9 + - - +
1412A MET* 2.9 41.5 - - + +
1419A VAL* 3.2 22.0 + - + +
1421A ARG* 1.3 82.0 - - - +
1423A ASP* 1.3 74.4 + - - +
1424A THR* 2.8 42.4 + - + +
1429A LYS* 3.5 17.5 + - - +
172E ARG* 5.3 2.3 + - - -
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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