Contacts of the helix formed by residues 119 - 124 (chain B) in PDB entry 1B70
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 SER 119 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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118B LEU* 1.3 77.0 - - - +
120B PRO* 1.3 71.3 - - - +
121B ARG* 3.7 0.2 - - - +
122B GLU* 2.7 40.8 + - - +
123B LEU 3.0 17.3 + - - -
129B GLY* 3.2 26.6 + - - -
131B GLY 3.1 22.2 - - - -
132B LEU* 4.7 1.5 - - - +
133B LEU* 3.7 5.9 - - - +
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Residues in contact with PRO 120 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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119B SER* 1.3 88.1 - - - +
121B ARG* 1.3 64.8 + - - +
123B LEU 3.2 0.3 + - - -
124B GLY 2.8 20.1 + - - -
125B VAL* 3.1 24.3 + - + -
126B GLY* 3.3 13.7 + - - +
128B TYR* 3.6 24.2 - - + -
129B GLY 3.5 9.4 - - - +
131B GLY 3.6 9.4 - - - +
132B LEU 4.9 0.9 - - - +
133B LEU* 4.0 15.0 - - + +
235B PHE* 3.8 30.7 - - + -
240B ARG* 5.3 0.9 - - - -
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Residues in contact with ARG 121 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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97B PRO* 6.0 0.3 - - - +
98B GLY* 5.7 3.1 + - - -
119B SER* 3.2 1.3 - - - +
120B PRO* 1.3 83.0 - - - +
122B GLU* 1.3 62.9 + - + +
124B GLY* 3.3 10.7 + - - -
126B GLY 3.1 12.8 + - - +
127B GLU* 2.6 31.1 + - - +
128B TYR 2.8 26.1 + - - -
129B GLY* 3.2 30.5 + - - +
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Residues in contact with GLU 122 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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96B LEU* 3.9 22.1 - - + +
97B PRO* 4.0 7.1 - - - +
98B GLY* 4.7 6.6 + - - +
116B MET* 4.4 12.7 - - - +
117B ALA 3.4 6.1 - - - +
118B LEU* 3.0 23.9 - - + -
119B SER* 2.7 49.6 + - - +
120B PRO 3.1 0.2 - - - -
121B ARG* 1.3 75.6 - - + +
123B LEU* 1.3 63.3 + - - +
124B GLY* 3.1 2.7 + - - -
132B LEU* 5.4 1.0 - - - +
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Residues in contact with LEU 123 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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40B PRO* 4.6 9.2 - - - +
41B ILE* 4.0 24.6 - - + +
42B PRO* 5.5 1.1 - - + -
45B VAL* 4.2 15.5 - - + -
88B ALA* 4.5 3.6 - - + -
96B LEU* 5.3 4.5 - - + -
97B PRO* 4.0 13.1 - - + +
118B LEU* 4.0 22.2 - - + -
119B SER 3.0 15.4 + - - +
120B PRO 4.0 2.7 - - - +
122B GLU* 1.3 77.4 - - - +
124B GLY* 1.3 59.0 + - - +
125B VAL* 3.7 24.8 - - + +
133B LEU* 3.8 22.2 - - + -
135B PHE* 5.6 1.1 - - + -
146B LEU* 4.4 21.3 - - + -
150B TRP* 5.7 4.3 - - + -
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Residues in contact with GLY 124 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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38B VAL 4.3 11.5 - - - +
39B PHE* 4.7 1.5 - - - -
40B PRO* 5.8 1.1 - - - +
97B PRO* 4.7 12.1 - - - -
120B PRO 2.8 6.2 + - - -
121B ARG 3.3 9.4 + - - -
122B GLU 3.1 3.6 - - - -
123B LEU* 1.3 79.3 - - - +
125B VAL* 1.3 62.3 + - - +
126B GLY 3.3 4.3 - - - -
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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