Contacts of the helix formed by residues 129 - 133 (chain A) in PDB entry 1NSX
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 GLY 129 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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128A ASP* 1.3 76.3 + - - +
130A THR* 1.3 63.6 + - - +
131A ASN 3.1 1.4 + - - -
132A GLY* 2.9 17.1 + - - -
133A TYR 2.9 20.8 + - - -
134A PRO* 5.0 0.2 - - - -
129B GLY* 3.2 27.3 - - - -
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Residues in contact with THR 130 (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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105A LYS* 6.1 0.7 - - - -
126A SER* 3.8 16.7 + - - +
127A ASN* 2.8 34.0 + - - +
128A ASP 3.3 1.6 + - - -
129A GLY* 1.3 73.4 - - - +
131A ASN* 1.3 70.9 + - + +
133A TYR* 3.1 20.9 + - - +
127B ASN* 3.9 27.6 - - + +
129B GLY 3.9 0.4 + - - -
130B THR* 3.4 19.7 + - - +
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Residues in contact with ASN 131 (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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86A LEU* 3.4 4.7 - - - +
87A ASN* 2.9 46.6 + - + +
97A GLY 3.0 27.3 + - - +
98A GLY* 3.6 6.3 + - - -
99A GLU* 3.0 25.0 + - - +
101A SER* 4.4 5.3 + - - +
130A THR* 1.3 75.4 - - + +
132A GLY* 1.3 58.2 + - - +
133A TYR* 3.3 10.4 + - + -
127B ASN* 3.2 26.1 + - - +
128B ASP* 2.8 21.7 + - - +
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Residues in contact with GLY 132 (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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84A TYR* 4.3 12.1 - - - +
85A ILE 4.1 15.7 - - - +
86A LEU* 3.6 11.2 - - - +
129A GLY* 2.9 13.8 + - - -
131A ASN* 1.3 76.2 - - - +
133A TYR* 1.3 61.3 + - - +
134A PRO* 3.6 8.1 - - - +
128B ASP 4.2 1.2 + - - -
129B GLY* 5.3 0.8 - - - -
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Residues in contact with TYR 133 (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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67A PRO* 4.0 32.8 - - + -
68A THR* 2.6 30.7 + - + -
86A LEU* 3.7 30.5 - - + +
94A THR* 4.0 3.1 - - - +
97A GLY* 3.3 33.1 - - - -
126A SER* 5.3 3.8 + - - +
127A ASN 4.1 2.3 - - - +
129A GLY* 2.9 24.4 + - - -
130A THR 3.1 18.7 + - - +
131A ASN* 3.6 13.5 - - + -
132A GLY* 1.3 77.1 - - - +
134A PRO* 1.3 71.8 - - + +
137A ILE* 5.1 4.5 - - + -
163A THR* 4.4 3.4 - - - +
164A VAL* 3.9 29.6 - - + -
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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