Contacts of the strand formed by residues 24 - 28 (chain I) in PDB entry 6A5T
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 ARG 24 (chain I).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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1156A TYR* 3.7 18.4 + - - -
1158A PRO* 4.9 1.1 - - - -
18I GLU 3.8 0.7 - - - -
19I ASP* 2.9 55.5 + - + +
22I ASN* 3.9 30.4 - - + +
23I GLN* 1.3 78.1 - - - +
25I LEU* 1.3 66.3 + - - +
26I LEU* 3.9 11.8 - - - +
37I LEU* 3.5 37.2 - - + +
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Residues in contact with LEU 25 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
1156A TYR* 3.9 17.9 - - + -
1193A TRP* 3.4 31.6 - - + -
16I PRO* 4.1 3.1 - - + -
17I LYS 3.5 26.0 - - - +
18I GLU* 4.0 1.3 - - + +
24I ARG* 1.3 80.8 - - - +
26I LEU* 1.3 93.9 + - - +
27I TYR* 4.7 3.8 - - - +
37I LEU* 4.3 0.2 - - - +
38I ALA* 3.2 29.6 + - + +
40I ASP 3.8 13.7 - - - +
41I PRO* 5.2 0.4 - - + -
43I VAL* 3.5 31.0 - - + -
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Residues in contact with LEU 26 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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16I PRO* 3.6 0.3 - - - +
17I LYS* 2.9 48.7 + - + +
19I ASP* 3.5 33.4 - - + +
24I ARG* 3.9 22.9 - - - +
25I LEU* 1.3 95.7 - - - +
27I TYR* 1.3 83.4 + - - +
35I THR* 4.2 14.8 - - + -
36I GLU 3.2 18.6 - - - +
37I LEU* 3.7 11.2 - - - -
38I ALA* 4.1 2.5 - - - -
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Residues in contact with TYR 27 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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3I SER 6.0 1.3 - - - -
4I PHE* 6.4 2.2 - + - -
14I LEU* 4.4 17.9 - - + +
15I TYR 3.0 21.1 - - - +
16I PRO* 4.5 11.9 - - + -
25I LEU* 4.9 2.5 - - + -
26I LEU* 1.3 83.1 - - - +
28I SER* 1.3 61.9 + - - +
34I TYR* 5.4 0.7 - - - -
35I THR* 3.8 1.0 - - - -
36I GLU* 2.8 55.3 + - + +
37I LEU 3.3 18.6 - - - -
38I ALA* 3.5 23.3 - - + -
39I GLU* 3.8 13.4 - - + +
40I ASP* 4.2 24.8 + - - +
43I VAL* 4.6 15.5 - - + +
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Residues in contact with SER 28 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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14I LEU* 3.5 7.0 - - - -
15I TYR* 2.9 35.4 + - - +
17I LYS* 3.5 36.3 - - - +
27I TYR* 1.3 75.9 - - - +
29I CYS* 1.3 75.7 + - - +
32I CYS 5.4 0.7 + - - -
33I ASP* 5.8 0.7 - - - -
34I TYR 3.8 11.6 + - - -
35I THR* 4.5 8.4 + - - +
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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