Contacts of the helix formed by residues 1159 - 1167 (chain A) in PDB entry 4YKN
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 PRO1159 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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1158A SER* 1.3 91.2 - - - +
1160A HIS* 1.3 65.1 + - + +
1161A SER 3.3 1.3 - - - -
1162A ARG* 2.9 19.5 + - + +
1163A ALA* 3.0 11.8 + - - +
1294A TYR* 3.3 53.4 - - + +
1297A LEU* 5.4 0.3 - - - +
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Residues in contact with HIS1160 (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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1157A ASN* 4.0 25.6 - - + +
1158A SER 3.3 1.8 - - - -
1159A PRO* 1.3 80.7 - - + +
1161A SER* 1.3 63.2 + - - +
1163A ALA* 2.9 8.4 + - - +
1164A MET* 2.8 55.6 + - + +
1262A LEU* 3.8 27.6 - - + +
1263A GLU* 4.9 5.2 + - - -
1294A TYR* 4.1 21.8 + - - +
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Residues in contact with SER1161 (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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1153A LEU 4.6 3.4 - - - -
1154A ARG* 2.4 38.4 + - - +
1155A ASP* 3.7 0.7 - - - -
1156A LEU* 3.6 1.7 + - - -
1157A ASN* 2.4 49.0 + - - -
1158A SER* 4.3 0.2 - - - -
1160A HIS* 1.3 79.2 - - - +
1162A ARG* 1.3 55.7 + - - +
1164A MET* 3.5 10.1 + - - +
1165A TYR* 3.1 23.9 + - - +
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Residues in contact with ARG1162 (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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1154A ARG* 3.6 8.7 - - + +
1155A ASP* 2.7 46.5 + - - +
1158A SER* 3.5 26.6 + - - +
1159A PRO* 2.9 11.5 + - + +
1161A SER* 1.3 77.1 + - - +
1163A ALA* 1.3 59.5 + - - +
1165A TYR* 3.2 11.3 + - + +
1166A VAL* 3.1 25.9 + - + +
1297A LEU* 3.6 16.3 - - + +
1298A PRO 5.7 1.6 - - - -
1299A MET* 3.1 41.7 - - - +
1300A ASP* 3.7 20.4 + - - +
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Residues in contact with ALA1163 (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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1159A PRO 3.0 4.8 + - - +
1160A HIS* 2.9 10.6 + - - +
1162A ARG* 1.3 74.8 - - - +
1164A MET* 1.3 58.9 + - - +
1167A TYR* 2.9 34.2 + - + +
1262A LEU* 3.6 19.3 - - + +
1293A LEU* 4.3 8.7 - - + -
1294A TYR* 3.9 27.6 - - + -
1297A LEU* 3.5 18.5 - - + +
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Residues in contact with MET1164 (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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1160A HIS* 2.8 43.4 + - + +
1161A SER* 3.7 11.7 - - - +
1162A ARG 3.3 0.2 - - - -
1163A ALA* 1.3 73.2 - - - +
1165A TYR* 1.3 60.5 + - - +
1167A TYR 4.4 0.9 - - - -
1168A PRO* 3.2 26.2 - - - +
1169A PRO* 3.8 28.8 - - + +
1262A LEU* 3.7 30.1 - - + +
1263A GLU* 3.2 26.7 - - + +
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Residues in contact with TYR1165 (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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1154A ARG* 3.3 58.9 + - + -
1161A SER 3.1 13.9 + - - +
1162A ARG* 3.4 11.7 - - + +
1163A ALA 3.1 0.4 - - - -
1164A MET* 1.3 75.8 - - - +
1166A VAL* 1.3 80.8 + - + +
1168A PRO* 3.5 12.3 - - - +
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Residues in contact with VAL1166 (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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1162A ARG 3.1 15.8 + - - +
1165A TYR* 1.3 92.8 - - + +
1167A TYR* 1.3 94.1 + - + +
1168A PRO* 3.2 8.4 - - - +
1297A LEU* 3.7 26.2 - - + -
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Residues in contact with TYR1167 (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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1163A ALA 2.9 15.7 + - - +
1164A MET 4.1 0.2 - - - +
1166A VAL* 1.3 102.7 - - + +
1168A PRO* 1.3 67.2 - - - +
1169A PRO* 3.6 1.9 - - - +
1258A ASP* 4.2 24.3 + - + -
1259A GLU* 5.9 0.2 - - - -
1260A TYR* 3.8 35.7 - + + +
1262A LEU* 3.5 23.1 - - + +
1293A LEU* 3.6 32.3 - - + -
1296A GLN* 2.6 29.3 + - - +
1297A LEU* 3.7 16.1 - - + +
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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