Contacts of the strand formed by residues 33 - 38 (chain A) in PDB entry 4XXD
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 LEU 33 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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4A MET* 4.6 6.7 - - - -
23A CYS* 4.4 14.8 - - - -
27A LEU* 3.5 19.1 - - - +
31A ALA 2.9 9.2 + - - +
32A TYR* 1.3 71.4 - - - +
34A HIS* 1.3 60.7 + - - +
35A TRP* 3.9 23.8 - - + +
48A ILE 5.0 0.2 - - - -
49A TYR 2.6 19.5 + - - +
51A VAL* 3.1 26.0 + - + -
65A SER 5.5 0.4 - - - +
71A PHE* 3.1 67.8 - - + -
88A CYS* 5.5 0.4 - - + -
89A SER 3.4 7.2 - - - +
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Residues in contact with HIS 34 (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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32A TYR* 3.2 18.6 + + - -
33A LEU* 1.3 75.5 - - - +
35A TRP* 1.3 68.1 + - - +
36A PHE* 3.9 0.9 - - + -
46A LEU* 3.7 11.4 - - + -
48A ILE 3.4 12.1 - - - +
49A TYR* 2.6 28.7 + - + +
50A LYS* 4.8 2.7 - - + -
88A CYS* 3.3 5.9 - - - +
89A SER* 2.9 57.8 + - - +
91A SER* 2.5 32.8 + - - -
19C PHE* 3.5 38.1 - + - -
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Residues in contact with TRP 35 (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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6A GLN* 4.5 4.9 - - - -
21A ILE* 3.5 38.4 - - + -
22A SER 4.2 0.4 - - - -
23A CYS* 3.6 31.4 - - + -
33A LEU* 3.9 18.2 - - + +
34A HIS* 1.3 79.2 - - - +
36A PHE* 1.3 61.7 + - - +
46A LEU* 3.7 3.8 - - - +
47A LEU* 2.9 28.8 + - + -
48A ILE* 2.9 43.5 + - + +
51A VAL 5.0 4.0 + - - -
64A GLY* 5.2 0.9 - - - -
65A SER 5.5 0.4 + - - -
71A PHE* 4.7 2.2 - - + -
72A THR* 4.0 13.6 + - - +
73A LEU* 3.5 49.7 - - + +
86A TYR* 5.0 0.7 - - + -
87A TYR* 3.3 22.4 - - - -
88A CYS* 3.6 17.9 - - + -
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Residues in contact with PHE 36 (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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34A HIS* 3.9 6.5 - - + -
35A TRP* 1.3 75.6 - - - +
37A LEU* 1.3 60.2 + - - +
44A PRO* 4.6 11.4 - - + -
45A ARG 3.3 7.4 - - - +
46A LEU* 3.6 30.1 - - + -
47A LEU* 4.2 4.0 - - - -
85A VAL 3.9 0.3 - - - +
86A TYR* 3.3 7.1 - - - +
87A TYR* 2.7 52.9 + - + +
89A SER* 2.5 36.6 - - - -
96A TRP* 4.0 8.5 - + - -
98A PHE* 4.7 4.5 - + - -
45B LEU* 5.5 1.6 - - + -
95B GLY 3.1 26.7 - - - -
98B TRP* 3.3 22.2 - + - -
19C PHE* 3.6 21.5 - + - -
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Residues in contact with LEU 37 (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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36A PHE* 1.3 73.4 - - - +
38A GLN* 1.3 65.8 + - - +
39A LYS* 4.2 28.6 + - + +
42A GLN* 5.1 1.7 + - - -
43A SER 4.2 1.0 - - - +
44A PRO* 4.2 0.9 - - - -
45A ARG* 2.7 45.8 + - + +
47A LEU* 3.6 29.6 - - + +
62A PHE* 4.8 5.8 - - + -
81A GLU 4.9 2.2 - - - +
82A ASP* 4.3 5.2 - - - +
84A GLY* 3.9 22.0 - - - -
85A VAL 3.8 2.9 - - - +
86A TYR* 3.6 45.3 - - + +
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Residues in contact with GLN 38 (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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37A LEU* 1.3 76.4 - - - +
39A LYS* 1.3 64.1 + - - +
42A GLN 3.2 26.8 + - - +
43A SER 4.5 1.6 - - - -
44A PRO* 3.5 30.4 - - + +
84A GLY* 3.5 0.5 - - - -
85A VAL* 2.9 42.7 + - + +
87A TYR* 3.8 16.6 + - + -
39B GLN* 2.9 42.6 + - - -
45B LEU* 4.7 0.3 - - - +
91B TYR* 3.2 13.5 + - - -
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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