Contacts of the strand formed by residues 21 - 26 (chain B) in PDB entry 4DDI
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 CYS 21 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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18B PRO* 2.8 37.2 + - - +
20B GLN* 1.3 71.0 - - - +
22B SER* 1.3 57.7 + - - +
36B THR 4.1 3.1 - - - -
37B ILE* 3.9 21.1 - - + -
103B LEU* 3.6 30.5 - - + +
104B LEU* 4.0 10.8 - - + -
107B CYS* 2.0 55.8 - - - -
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Residues in contact with SER 22 (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 LEU* 4.5 7.6 - - - -
17B PRO* 6.4 0.2 - - - -
18B PRO* 4.0 17.7 - - - -
19B ALA 4.3 8.4 + - - -
20B GLN 4.8 0.3 + - - -
21B CYS* 1.3 75.1 - - - +
23B ALA* 1.3 63.3 + - - +
35B ALA* 3.3 4.7 - - - +
36B THR* 3.1 42.0 + - - +
37B ILE* 5.2 0.8 - - - +
103B LEU* 4.5 4.4 - - - +
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Residues in contact with ALA 23 (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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10B LEU* 5.0 3.5 - - - +
13B LEU* 4.1 18.3 - - + +
22B SER* 1.3 76.4 - - - +
24B GLY* 1.3 59.7 + - - +
33B TRP* 3.9 22.3 - - + -
34B GLN 3.5 9.6 - - - +
35B ALA* 3.5 19.5 - - + -
54B ILE* 4.4 4.7 - - + -
99B ILE* 5.2 0.7 - - + -
103B LEU* 3.9 14.3 - - + +
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Residues in contact with GLY 24 (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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10B LEU* 4.8 3.6 - - - -
23B ALA* 1.3 79.0 - - - +
25B PRO* 1.3 73.5 - - - +
33B TRP* 3.2 14.5 - - - -
34B GLN* 2.8 33.7 + - - +
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Residues in contact with PRO 25 (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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10B LEU* 4.0 29.4 - - + -
24B GLY* 1.3 89.0 - - - +
26B VAL* 1.3 63.6 + - - +
27B GLY 3.6 9.6 + - - +
29B ASP 3.4 16.2 - - - +
30B MET* 4.2 14.6 - - + -
32B HIS 3.4 7.6 - - - +
33B TRP* 3.5 18.1 - - + +
58C THR* 6.1 3.8 - - + +
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Residues in contact with VAL 26 (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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25B PRO* 1.3 74.2 - - - +
27B GLY* 1.3 66.7 + - - +
28B ASP 3.2 0.7 + - - -
29B ASP* 2.9 19.9 + - + +
32B HIS* 2.9 48.6 + - + +
34B GLN* 4.1 24.9 - - + -
55C HIS* 4.0 32.3 - - + +
56C PHE 6.0 0.9 - - - +
66C LYS* 5.3 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