Contacts of the helix formed by residues 70 - 87 (chain A) in PDB entry 4XYN
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 ASP 70 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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15A PHE* 3.5 4.5 - - - -
26A HIS 4.3 1.6 - - - +
27A LYS* 3.9 32.7 - - + +
64A ASP* 3.0 25.5 - - - +
66A ASP* 5.7 0.2 - - - +
68A GLU 3.8 0.6 + - - -
69A CYS* 1.3 78.9 - - - +
71A PHE* 1.3 59.6 + - - +
72A GLN* 3.3 6.7 + - - +
73A GLU* 2.7 51.4 + - - +
74A PHE* 2.8 24.3 + - - +
501A CA 4.3 0.3 - - - -
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Residues in contact with PHE 71 (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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11A LEU 4.1 2.5 - - - -
12A ILE* 3.8 26.5 - - + -
15A PHE* 3.3 43.4 - + + -
26A HIS 4.4 2.3 + - - +
70A ASP* 1.3 76.5 - - - +
72A GLN* 1.3 58.5 + - - +
74A PHE* 2.8 19.8 + + - +
75A MET* 2.9 48.7 + - + +
82B THR* 3.7 20.9 - - + -
83B THR* 4.0 11.4 - - + -
86B HIS* 3.5 52.5 - + + +
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Residues in contact with GLN 72 (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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70A ASP* 3.3 6.7 + - - +
71A PHE* 1.3 78.8 - - - +
73A GLU* 1.3 64.3 + - + +
75A MET* 3.1 6.9 + - + +
76A ALA* 3.1 20.1 + - - +
79B ALA* 6.4 0.7 - - + -
80B MET* 6.3 0.4 - - - +
83B THR* 3.3 43.5 + - + +
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Residues in contact with GLU 73 (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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61A LEU* 3.5 26.3 - - - +
63A ASN* 3.2 20.5 + - + +
64A ASP* 3.0 18.0 + - - +
68A GLU 2.9 11.4 - - - +
69A CYS* 3.6 11.9 - - - -
70A ASP* 2.7 37.9 + - - +
72A GLN* 1.3 78.6 - - + +
74A PHE* 1.3 60.4 + - - +
76A ALA* 3.3 9.0 + - - +
77A PHE* 3.1 19.4 + - - +
501A CA 2.4 30.9 - - - -
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Residues in contact with PHE 74 (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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11A LEU* 3.7 25.4 - - + -
14A VAL* 3.8 20.6 - - + -
15A PHE* 3.4 27.8 - + + -
28A LEU* 4.0 15.7 - - + -
33A LEU* 5.3 0.9 - - + -
36A LEU* 4.1 24.5 - - + -
69A CYS* 3.6 9.0 - - - -
70A ASP 2.8 13.4 + - - +
71A PHE* 2.8 20.2 + + - +
73A GLU* 1.3 75.4 - - - +
75A MET* 1.3 59.0 + - - -
77A PHE* 3.2 24.0 + + + +
78A VAL* 2.9 51.6 + - + +
4B LEU* 4.5 8.3 - - + -
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Residues in contact with MET 75 (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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11A LEU* 3.9 29.6 - - + -
71A PHE* 2.9 53.1 + - + +
72A GLN* 3.1 9.2 + - + +
74A PHE* 1.3 77.7 - - - +
76A ALA* 1.3 60.3 + - - +
78A VAL* 3.0 12.6 + - + +
79A ALA* 2.8 29.7 + - - +
75B MET* 5.8 2.6 - - + +
78B VAL* 4.9 3.6 - - + -
79B ALA* 3.8 33.0 - - + +
82B THR* 3.8 17.7 - - - +
83B THR* 3.8 12.1 - - - +
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Residues in contact with ALA 76 (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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61A LEU* 5.3 0.9 - - + -
63A ASN* 5.8 6.3 - - - +
72A GLN 3.1 11.4 + - - +
73A GLU* 3.4 12.1 - - - +
74A PHE 3.2 0.2 - - - -
75A MET* 1.3 75.2 - - - +
77A PHE* 1.3 63.4 + - - +
79A ALA* 3.4 7.3 + - - +
80A MET* 3.1 37.6 + - + +
79B ALA* 5.5 0.2 - - - +
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Residues in contact with PHE 77 (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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33A LEU* 4.3 11.0 - - + -
36A LEU* 4.9 1.1 - - + -
37A ILE* 3.8 29.4 - - + -
41A LEU* 3.8 19.5 - - + -
45A LEU* 3.9 17.3 - - + -
57A VAL* 4.3 10.3 - - + -
61A LEU* 3.5 36.3 - - + -
69A CYS* 5.4 0.2 - - - -
73A GLU 3.1 7.6 + - - +
74A PHE* 3.2 33.0 + + - +
76A ALA* 1.3 80.2 - - - +
78A VAL* 1.3 65.3 + - + +
80A MET* 3.3 12.6 + - + +
81A VAL* 3.1 35.4 + - + +
8B MET* 6.1 0.4 - - + -
60P ALA* 5.5 0.7 - - + -
63P VAL* 4.6 16.6 - - + -
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Residues in contact with VAL 78 (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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11A LEU* 3.8 29.4 - - + -
74A PHE* 2.9 52.7 + - + +
75A MET* 3.0 14.8 + - + +
77A PHE* 1.3 76.9 - - + +
79A ALA* 1.3 55.5 + - - +
81A VAL* 4.0 0.5 - - - +
82A THR* 2.7 48.2 + - - +
4B LEU* 4.6 0.7 - - + -
8B MET* 3.7 24.7 - - + -
11B LEU* 4.9 1.8 - - + -
75B MET* 4.8 7.9 - - + -
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Residues in contact with ALA 79 (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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75A MET 2.8 15.7 + - - +
76A ALA* 3.8 8.1 - - - +
77A PHE 3.2 0.2 - - - -
78A VAL* 1.3 74.1 - - - +
80A MET* 1.3 59.9 + - - +
82A THR* 4.0 0.2 - - - -
83A THR* 2.9 36.6 + - - +
75B MET* 3.8 40.1 - - + +
76B ALA* 5.3 0.4 - - - +
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Residues in contact with MET 80 (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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60A THR* 4.4 5.8 - - + +
61A LEU* 3.4 30.3 - - + -
76A ALA* 3.1 36.4 + - + +
77A PHE* 3.6 10.8 - - + +
79A ALA* 1.3 71.7 - - - +
81A VAL* 1.3 68.9 + - + +
83A THR* 3.0 7.5 + - - +
84A ALA* 2.9 22.1 + - - +
63P VAL* 4.1 26.9 - - + -
64P LEU 3.1 33.2 - - - +
65P SER* 3.9 23.6 - - - +
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Residues in contact with VAL 81 (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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41A LEU* 4.7 4.7 - - + -
44A PHE* 4.0 36.1 - - + +
45A LEU* 4.3 19.1 - - + -
77A PHE* 3.1 46.4 + - + +
78A VAL 4.0 2.7 - - - +
80A MET* 1.3 76.8 - - - +
82A THR* 1.3 64.5 + - - +
84A ALA* 3.1 8.8 + - + +
85A CYS* 3.1 20.4 + - - -
8B MET* 4.1 13.0 - - + -
63P VAL* 4.8 7.4 - - + -
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Residues in contact with THR 82 (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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78A VAL* 2.7 26.7 + - - +
79A ALA 4.0 2.5 - - - -
81A VAL* 1.3 76.5 - - - +
83A THR* 1.3 57.2 + - - +
85A CYS* 3.3 9.4 + - - +
86A HIS* 2.9 27.4 + - - +
8B MET* 3.4 46.1 - - + +
11B LEU* 4.6 2.5 - - + +
12B ILE* 4.1 5.6 - - + +
71B PHE* 3.6 24.7 - - + -
75B MET* 4.0 15.3 - - + +
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Residues in contact with THR 83 (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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79A ALA 2.9 24.3 + - - -
80A MET* 3.4 6.1 - - - +
82A THR* 1.3 75.1 - - - +
84A ALA* 1.3 65.3 + - - +
86A HIS* 3.6 7.1 + - - +
87A GLU* 3.6 19.0 + - + +
71B PHE* 4.0 14.3 - - + -
72B GLN* 4.3 28.2 - - + +
75B MET* 4.0 15.4 - - - +
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Residues in contact with ALA 84 (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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80A MET 2.9 11.6 + - - +
81A VAL* 3.3 13.2 - - + +
83A THR* 1.3 74.7 - - - +
85A CYS* 1.3 66.3 + - - +
86A HIS 3.2 0.9 + - - -
87A GLU* 3.4 30.7 + - - +
88A PHE 4.5 0.5 + - - -
58P THR* 5.4 12.8 - - + +
63P VAL* 6.0 5.2 - - + -
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Residues in contact with CYS 85 (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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44A PHE* 3.5 56.3 - - + -
81A VAL* 3.1 16.3 + - - -
82A THR* 3.5 9.2 - - - +
84A ALA* 1.3 78.8 - - - +
86A HIS* 1.3 57.5 + - - +
88A PHE* 2.8 31.7 + - - +
89A PHE* 4.2 2.5 - - + -
8B MET* 6.1 0.7 - - + -
12B ILE* 4.3 13.2 - - + -
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Residues in contact with HIS 86 (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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82A THR 2.9 16.6 + - - +
83A THR 4.0 5.6 + - - +
84A ALA 3.2 1.2 - - - -
85A CYS* 1.3 71.1 - - - +
87A GLU* 1.3 54.3 + - - +
88A PHE 3.0 6.5 - - - -
89A PHE* 2.5 30.4 + - + -
90A GLU* 3.0 19.0 + - - -
12B ILE* 3.9 26.0 - - + -
15B PHE* 5.1 1.6 - + - -
16B HIS* 3.1 36.7 + + - -
26B HIS* 5.1 7.0 - + + -
71B PHE* 3.7 48.9 - + + +
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Residues in contact with GLU 87 (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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83A THR* 3.6 17.3 - - + +
84A ALA* 3.5 18.7 - - - +
85A CYS 3.2 0.2 - - - -
86A HIS* 1.3 79.6 - - - +
88A PHE* 1.3 56.3 + - - +
90A GLU* 3.0 52.5 + - + +
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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
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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