Contacts of the helix formed by residues 123 - 133 (chain U) in PDB entry 1NSK
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 VAL 123 (chain U).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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5U GLU* 3.6 41.5 - - + +
6U ARG 5.3 2.0 - - - +
84U VAL* 4.0 8.3 - - + +
122U SER* 1.3 74.6 - - - +
124U LYS* 1.3 65.6 + - + +
126U ALA* 3.4 7.7 - - - +
127U GLU* 3.1 30.3 + - + +
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Residues in contact with LYS 124 (chain U).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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122U SER* 3.1 9.8 + - - +
123U VAL* 1.3 85.8 - - + +
125U SER* 1.3 63.2 + - - +
127U GLU* 3.5 4.0 + - - +
128U LYS* 3.2 42.5 + - - +
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Residues in contact with SER 125 (chain U).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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120U SER* 4.7 0.2 - - - -
121U ASP* 3.0 32.2 + - - -
122U SER* 2.9 20.7 + - - -
124U LYS* 1.3 78.0 - - - +
126U ALA* 1.3 57.6 + - - +
128U LYS* 3.1 12.4 + - - +
129U GLU* 2.8 45.1 + - - +
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Residues in contact with ALA 126 (chain U).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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6U ARG 3.6 24.9 - - - +
7U THR* 4.2 4.0 - - - -
8U PHE* 4.4 0.2 - - - +
84U VAL* 4.0 4.5 - - + -
120U SER* 3.3 24.2 - - - +
122U SER 2.7 20.0 + - - +
123U VAL* 3.4 10.5 - - - +
124U LYS 3.2 0.2 - - - -
125U SER* 1.3 73.3 - - - +
127U GLU* 1.3 58.2 + - + +
129U GLU* 3.4 1.4 + - - +
130U ILE* 2.8 37.0 + - + +
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Residues in contact with GLU 127 (chain U).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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6U ARG* 2.8 56.0 + - - +
123U VAL* 3.1 16.8 + - + +
124U LYS* 4.0 4.0 - - - +
126U ALA* 1.3 72.9 - - + +
128U LYS* 1.3 66.5 + - - +
130U ILE* 3.7 8.3 - - - +
131U SER* 2.9 29.3 + - - +
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Residues in contact with LYS 128 (chain U).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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124U LYS* 3.2 37.5 + - + +
125U SER* 3.1 15.4 + - - +
127U GLU* 1.3 76.1 - - - +
129U GLU* 1.3 66.4 + - + +
131U SER* 3.0 9.5 + - - -
132U LEU* 2.9 22.6 + - - +
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Residues in contact with GLU 129 (chain U).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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8U PHE* 3.2 17.0 - - + -
51U HIS* 3.8 19.0 + - + +
118U HIS* 2.9 36.9 + - - -
120U SER* 2.6 32.4 + - - -
121U ASP* 4.5 3.3 - - - +
125U SER* 2.8 28.3 + - - +
126U ALA 3.8 2.7 - - - +
128U LYS* 1.3 73.5 - - + +
130U ILE* 1.3 55.7 + - - +
132U LEU* 2.9 9.0 + - - -
133U TRP* 2.7 43.2 + - + -
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Residues in contact with ILE 130 (chain U).
Click here for Legend to table.
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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6U ARG* 4.0 28.3 - - + +
7U THR 4.3 3.8 - - - -
8U PHE* 4.0 15.5 - - + -
77U VAL* 4.0 24.9 - - + -
126U ALA 2.8 36.9 + - - +
127U GLU* 3.7 23.6 - - - +
129U GLU* 1.3 71.3 - - - +
131U SER* 1.3 55.4 + - - +
134U PHE* 2.7 40.2 + - + +
139U LEU* 3.9 29.8 - - + -
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Residues in contact with SER 131 (chain U).
Click here for Legend to table.
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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127U GLU* 2.9 14.9 + - - +
128U LYS* 3.0 10.8 + - - -
130U ILE* 1.3 77.0 - - - +
132U LEU* 1.3 63.0 + - - +
134U PHE 3.1 19.6 - - - +
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Residues in contact with LEU 132 (chain U).
Click here for Legend to table.
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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47U HIS* 2.8 48.4 + - + +
50U GLN* 4.1 31.6 - - + +
51U HIS* 3.8 25.1 - - + +
128U LYS 2.9 12.8 + - - +
129U GLU* 3.5 8.1 - - - +
131U SER* 1.3 78.2 - - - +
133U TRP* 1.3 89.0 + - + +
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Residues in contact with TRP 133 (chain U).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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8U PHE* 3.4 36.3 - + + -
39U LYS* 3.2 25.9 + - + +
41U LEU* 4.2 15.6 - - + +
43U ALA* 3.5 28.3 - - + -
47U HIS* 3.3 24.6 - + - -
48U LEU* 4.1 15.3 - - + -
51U HIS* 2.9 37.1 - + + -
68U MET* 5.2 7.4 - - + -
73U VAL* 3.8 26.9 - - + -
75U ALA* 3.8 17.0 - - + -
129U GLU 2.7 23.7 + - - +
132U LEU* 1.3 89.2 - - + +
134U PHE* 1.3 63.2 + - + +
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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