Contacts of the helix formed by residues 29 - 39 (chain B) in PDB entry 1B4C
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 LYS 29 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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27B LEU 4.0 0.6 + - - -
28B LYS* 1.3 88.1 - - + +
30B SER* 1.3 75.9 + - - +
32B LEU* 3.9 8.5 - - - -
33B LYS* 2.7 33.5 + - - +
60B LEU* 3.5 28.6 - - + +
61B ASP* 2.9 31.6 + - - +
63B ASP* 3.4 33.3 + - + +
64B GLY 5.4 1.4 - - - +
68B CYS* 4.3 12.5 - - - -
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Residues in contact with SER 30 (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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28B LYS* 3.3 15.7 - - - +
29B LYS* 1.3 89.9 - - - +
31B GLU* 1.3 79.7 + - - +
33B LYS* 3.8 6.1 + - - +
34B GLU* 3.6 15.6 + - - +
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Residues in contact with GLU 31 (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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20B ARG* 6.3 0.4 - - - +
27B LEU* 4.5 17.0 - - + -
28B LYS* 3.3 31.2 + - + +
29B LYS 3.1 0.4 - - - -
30B SER* 1.3 95.3 + - - +
32B LEU* 1.3 67.2 + - - +
34B GLU* 3.3 10.4 + - - +
35B LEU* 3.1 21.8 + - - +
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Residues in contact with LEU 32 (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 LEU* 3.8 25.2 - - + +
28B LYS 2.8 17.7 + - - +
29B LYS* 3.5 6.7 - - - +
31B GLU* 1.3 77.7 - - - +
33B LYS* 1.3 66.1 - - - +
35B LEU* 2.8 18.3 + - - +
36B ILE* 3.1 24.8 + - + -
60B LEU* 3.9 20.9 - - + -
68B CYS* 4.3 20.6 - - + -
73B PHE* 3.8 43.7 - - + +
76B PHE* 4.9 8.3 - - + -
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Residues in contact with LYS 33 (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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29B LYS 2.7 19.8 + - - +
30B SER* 3.9 7.4 - - - +
32B LEU* 1.3 72.4 - - - +
34B GLU* 1.3 56.9 + - - +
36B ILE* 2.5 38.1 + - + +
37B ASN* 3.0 32.1 + - + +
57B MET* 3.7 40.1 - - - +
60B LEU* 5.2 10.0 - - + +
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Residues in contact with GLU 34 (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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17B TYR* 4.3 16.8 - - - -
30B SER 3.6 9.5 + - - +
31B GLU* 3.3 12.9 + - - +
32B LEU 3.2 0.6 - - - -
33B LYS* 1.3 79.9 - - - +
35B LEU* 1.3 66.1 + - - +
37B ASN* 3.1 21.1 + - + +
38B ASN* 3.3 21.8 + - - +
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Residues in contact with LEU 35 (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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13B VAL* 5.6 1.1 - - + -
14B PHE* 5.5 9.2 - - + -
17B TYR* 3.7 55.9 - - + +
27B LEU* 4.1 28.5 - - + -
31B GLU 3.1 10.4 + - - +
32B LEU* 2.8 13.4 + - - +
34B GLU* 1.3 80.0 - - - +
36B ILE* 1.3 56.8 + - - +
38B ASN* 3.2 3.1 + - - +
39B GLU* 2.7 51.9 + - + +
73B PHE* 4.9 20.2 - - + -
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Residues in contact with ILE 36 (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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32B LEU* 3.4 31.6 - - + +
33B LYS* 2.5 27.9 + - + +
35B LEU* 1.3 72.3 - - + +
37B ASN* 1.3 56.9 + - - +
39B GLU* 4.6 1.3 - - - -
40B LEU* 2.9 47.8 + - + +
41B SER* 3.5 5.5 + - - -
56B VAL* 5.1 9.2 - - + -
57B MET* 4.1 27.1 - - + -
60B LEU* 4.6 14.8 - - + -
73B PHE* 5.6 3.6 - - + -
76B PHE* 5.7 4.3 - - + -
77B VAL* 6.4 0.7 - - + -
80B VAL* 5.5 10.8 - - + -
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Residues in contact with ASN 37 (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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33B LYS* 3.0 27.6 + - + +
34B GLU* 3.1 20.7 + - + +
36B ILE* 1.3 79.9 - - - +
38B ASN* 1.3 58.7 + - - +
41B SER* 3.2 20.9 + - - -
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Residues in contact with ASN 38 (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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1A SER* 5.2 4.9 - - - -
4A GLU* 4.5 4.9 - - - +
17B TYR* 4.3 21.1 + - + +
34B GLU* 3.3 19.8 + - - +
35B LEU* 3.2 3.8 + - - +
36B ILE 3.2 0.2 - - - -
37B ASN* 1.3 79.2 - - - +
39B GLU* 1.3 65.6 + - - +
41B SER* 4.0 9.9 + - - -
42B HIS* 4.8 7.4 - - - -
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Residues in contact with GLU 39 (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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1A SER* 2.9 18.7 + - - -
3A LEU* 3.1 32.8 - - + +
4A GLU* 2.7 44.6 - - - +
13B VAL* 3.6 15.9 - - - +
17B TYR* 4.6 5.5 + - - -
35B LEU* 2.7 37.0 + - + +
38B ASN* 1.3 83.8 - - - +
40B LEU* 1.3 77.9 + - + +
41B SER* 3.5 2.0 - - - -
42B HIS* 4.7 1.8 + - - -
43B PHE* 4.8 3.1 - - - -
73B PHE* 5.4 7.9 - - + -
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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