Contacts of the helix formed by residues 104 - 110 (chain B) in PDB entry 3CP7
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 THR 104 (chain B).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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32B ASN 3.9 17.0 - - - +
33B GLN* 3.1 37.2 + - + +
34B SER* 4.1 2.0 - - - +
71B TRP* 3.8 2.5 - - - -
98B GLU 5.0 0.2 - - - -
99B THR* 4.0 23.1 - - + +
102B GLY 4.3 1.8 - - - +
103B THR* 1.3 78.2 - - - +
105B VAL* 1.3 64.9 + - - +
107B GLN* 3.1 29.8 + - - +
108B GLN 3.0 18.5 + - - -
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Residues in contact with VAL 105 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
27B ILE* 3.9 30.5 - - + -
33B GLN 3.5 11.1 + - - +
34B SER* 4.0 16.7 - - - +
36B VAL* 5.1 0.7 - - + -
57B PHE* 4.5 0.9 - - + -
59B PRO* 4.3 4.9 - - + -
71B TRP* 3.6 51.2 - - + +
97B LEU* 4.1 20.6 - - + -
98B GLU 4.7 1.8 + - - -
104B THR* 1.3 73.6 - - - +
106B GLN* 1.3 59.5 + - - +
108B GLN* 3.3 0.9 + - - +
109B VAL* 3.0 35.0 + - + +
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Residues in contact with GLN 106 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
27B ILE* 3.6 21.1 - - + +
28B VAL 3.3 7.9 + - - -
29B ALA* 3.7 2.9 - - - +
30B SER* 3.1 44.5 + - - +
33B GLN* 3.2 38.7 + - + +
105B VAL* 1.3 76.9 - - - +
107B GLN* 1.3 56.5 + - - +
110B GLY* 2.7 33.5 + - - +
111B THR 4.0 7.0 + - - +
112B ALA* 3.6 17.6 - - + +
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Residues in contact with GLN 107 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
33B GLN* 2.8 24.6 + - - +
102B GLY 3.1 26.1 + - - +
103B THR* 3.5 11.5 + - + +
104B THR* 3.1 28.9 + - - +
106B GLN* 1.3 79.4 - - - +
108B GLN* 1.3 63.2 + - - +
110B GLY* 4.0 5.6 + - - -
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Residues in contact with GLN 108 (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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67B GLU* 3.9 8.9 + - - +
68B HIS* 3.0 60.4 + - + +
71B TRP* 3.6 25.5 - - + -
103B THR* 3.8 13.9 - - + +
104B THR 3.0 7.0 + - - +
105B VAL 3.7 3.4 - - - +
107B GLN* 1.3 81.0 - - - +
109B VAL* 1.3 63.1 + - + +
110B GLY* 4.6 0.3 - - - -
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Residues in contact with VAL 109 (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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7B PRO* 3.5 46.6 - - + +
8B HIS 3.9 2.7 - - - +
27B ILE* 3.8 11.0 - - + -
59B PRO* 3.6 33.2 - - + -
68B HIS* 3.8 24.9 - - + +
105B VAL* 3.0 20.5 + - + +
108B GLN* 1.3 78.3 - - + +
110B GLY* 1.3 60.9 + - - +
111B THR* 3.6 13.8 + - + +
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Residues in contact with GLY 110 (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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106B GLN 2.7 22.0 + - - -
107B GLN* 4.4 6.1 - - - -
108B GLN 3.4 1.6 - - - -
109B VAL* 1.3 71.8 - - - +
111B THR* 1.3 61.4 + - - +
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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