Contacts of the strand formed by residues 64 - 70 (chain B) in PDB entry 4IXU
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 HIS 64 (chain B).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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24B HIS 2.9 27.2 + - - +
25B SER* 3.3 16.3 - - - +
26B VAL 2.8 28.1 + - - +
62B GLY 3.5 15.0 + - - -
63B CYS* 1.3 71.2 - - - +
65B LEU* 1.3 59.9 + - - +
66B LYS 4.1 0.2 + - - -
111B TYR* 4.6 1.2 - - + -
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Residues in contact with LEU 65 (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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26B VAL* 3.4 27.8 - - + +
28B VAL* 4.5 2.2 - - + -
55B MET* 3.4 47.8 - - + +
58B LEU* 3.9 23.3 - - + -
59B SER* 3.3 27.8 - - - +
63B CYS* 3.5 14.1 + - + +
64B HIS* 1.3 72.8 - - - +
66B LYS* 1.3 59.2 + - - +
67B ASP 4.1 1.0 + - - +
111B TYR* 4.9 2.0 - - - -
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Residues in contact with LYS 66 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
26B VAL 2.9 8.9 + - - -
27B ALA* 3.3 1.8 - - - -
28B VAL 2.8 26.2 + - - -
55B MET* 5.0 0.7 - - - -
64B HIS 4.1 0.6 + - - -
65B LEU* 1.3 74.4 - - - +
67B ASP* 1.3 66.3 + - - +
68B PHE* 3.6 44.7 + - + -
105B ARG* 6.2 1.2 - - - +
109B ASP* 4.9 10.9 + - - -
111B TYR* 3.6 41.9 - - + +
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Residues in contact with ASP 67 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
28B VAL* 3.4 5.1 - - - +
50B ARG* 2.4 39.1 + - - -
55B MET* 3.7 23.8 - - + +
65B LEU 4.1 1.8 + - - -
66B LYS* 1.3 78.6 - - - +
68B PHE* 1.3 61.6 + - - +
69B GLY* 2.6 30.1 + - - -
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Residues in contact with PHE 68 (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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27B ALA* 3.5 25.4 - - + -
28B VAL 2.9 19.6 + - - +
29B ILE* 3.9 20.2 - - + -
66B LYS* 3.6 46.4 - - + +
67B ASP* 1.3 72.1 - - - +
69B GLY* 1.3 63.6 + - - +
70B ASP 4.8 1.2 - - - +
71B LEU* 4.3 18.2 - - + +
102B VAL* 3.7 23.1 - - + -
105B ARG* 5.9 4.9 - - + -
106B ALA* 4.2 21.5 - - + -
109B ASP* 6.1 0.7 - - - -
111B TYR* 5.6 0.9 - + - -
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Residues in contact with GLY 69 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
29B ILE* 4.0 0.7 - - - -
30B GLY 2.7 28.6 + - - +
50B ARG* 3.4 12.3 - - - -
67B ASP* 2.6 26.8 + - - -
68B PHE* 1.3 76.9 - - - +
70B ASP* 1.3 54.8 + - - -
71B LEU* 3.8 1.9 + - - +
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Residues in contact with ASP 70 (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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30B GLY* 3.5 14.3 - - - +
32B PRO* 4.5 10.9 - - + +
43B GLU 5.3 1.4 - - - +
46B PRO* 3.8 22.0 - - - +
47B ALA* 4.3 11.8 + - - +
50B ARG* 3.2 25.0 + - - -
68B PHE 4.8 1.0 - - - +
69B GLY* 1.3 71.3 - - - -
71B LEU* 1.3 68.3 + - - +
72B SER* 3.7 4.5 + - - -
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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
------------------------------------------------------------
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