Contacts of the strand formed by residues 22 - 28 (chain A) in PDB entry 1D1T
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 SER 22 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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13A VAL 2.8 28.2 + - - -
15A TRP* 3.6 20.3 + - - -
20A PRO 4.8 1.3 - - - -
21A PHE* 1.3 77.8 - - - +
23A ILE* 1.3 65.9 + - - +
24A GLU* 2.9 31.6 + - - +
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Residues in contact with ILE 23 (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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10A LYS* 4.0 35.7 + - + +
11A ALA 3.2 11.2 - - - +
12A ALA* 4.5 7.6 - - + -
21A PHE* 5.7 1.6 - - + -
22A SER* 1.3 69.6 + - - +
24A GLU* 1.3 64.0 + - - +
352A PHE* 4.2 22.4 - - + +
353A LYS* 3.9 40.4 - - + +
355A ILE* 4.6 7.9 - - + -
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Residues in contact with GLU 24 (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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10A LYS* 3.0 30.2 - - - +
11A ALA 2.9 11.9 + - - +
13A VAL* 4.2 7.6 - - + -
15A TRP* 3.2 34.8 + - + +
22A SER* 2.9 35.4 + - - +
23A ILE* 1.3 77.0 - - - +
25A GLU* 1.3 64.2 + - - +
26A ILE* 4.3 1.6 - - + -
132A CYS* 3.8 16.2 - - - -
133A LYS* 3.7 25.7 + - - -
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Residues in contact with GLU 25 (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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8A LYS* 4.7 7.0 - - + +
9A CYS* 3.2 22.3 + - - +
10A LYS* 3.3 31.7 - - - +
24A GLU* 1.3 76.7 + - - +
26A ILE* 1.3 63.3 + - - +
27A GLU* 4.2 6.5 - - - +
132A CYS* 3.8 17.3 - - - +
133A LYS* 4.9 3.4 + - - +
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Residues in contact with ILE 26 (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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7A ILE 3.6 0.5 - - - +
8A LYS* 3.2 6.6 - - - +
9A CYS* 2.6 49.5 + - - +
11A ALA* 3.7 23.8 - - + -
13A VAL* 4.5 9.0 - - + -
24A GLU 4.3 6.7 - - - +
25A GLU* 1.3 79.5 - - - +
27A GLU* 1.3 64.9 + - - +
28A VAL* 3.7 20.4 - - + -
64A ILE* 3.9 17.0 - - + -
130A PHE* 3.9 7.9 - - + -
131A THR 3.2 11.9 - - - +
132A CYS* 3.8 16.4 - - + -
137A VAL* 5.4 0.7 - - + -
147A THR* 3.7 22.4 - - - +
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Residues in contact with GLU 27 (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 VAL* 3.6 18.2 - - + -
7A ILE 3.3 4.5 - - - -
8A LYS* 4.2 25.7 - - + +
25A GLU* 4.2 7.1 - - - +
26A ILE* 1.3 85.2 + - - +
28A VAL* 1.3 61.7 + - - +
29A ALA 3.9 0.6 + - - -
129A ARG 3.3 4.9 - - - +
130A PHE* 3.3 2.8 - - - +
131A THR* 2.8 65.0 + - - +
132A CYS* 4.0 3.3 + - - -
133A LYS 4.8 3.5 + - - -
134A GLY 5.0 1.9 + - - -
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Residues in contact with VAL 28 (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 VAL* 4.1 1.3 - - - -
7A ILE* 2.7 28.1 + - + +
9A CYS* 4.2 4.9 - - - -
26A ILE* 3.7 17.3 - - + -
27A GLU* 1.3 70.7 - - - +
29A ALA* 1.3 58.3 + - - +
37A ARG* 2.8 41.0 + - + -
129A ARG 3.4 3.1 - - - +
130A PHE* 3.6 27.1 - - + -
149A TYR* 3.8 26.2 - - + +
151A VAL* 3.5 30.3 - - + -
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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