Contacts of the strand formed by residues 42 - 46 (chain B) in PDB entry 2IZV
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 GLN 42 (chain B).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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28B LYS* 2.9 71.3 + - + +
31B VAL* 3.8 19.5 - - - +
32B GLU 4.0 5.1 - - - +
37B ARG* 2.7 27.6 + - + +
38B PRO 3.5 11.0 + - - +
39B PRO* 3.1 7.3 + - - +
40B ASP 3.3 1.3 - - - +
41B GLU* 1.3 84.6 - - - +
43B ARG* 1.3 62.7 + - - +
44B LEU* 4.6 0.9 - - - +
77B LEU* 3.8 12.9 - - + +
78B ALA 3.4 4.5 - - - -
79B PHE* 4.0 15.5 - - + -
85B PHE* 3.6 8.5 - - - -
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Residues in contact with ARG 43 (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* 4.5 1.1 - - - +
42B GLN* 1.3 75.0 - - - +
44B LEU* 1.3 62.9 + - - +
45B TYR* 3.4 31.9 + - + -
50B LEU* 3.4 34.1 - - + +
77B LEU* 3.3 8.1 - - - +
78B ALA* 2.9 33.7 + - + +
85B PHE* 3.2 58.2 + - + +
86B GLU 5.1 2.0 + - - -
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Residues in contact with LEU 44 (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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7B ILE* 4.2 9.2 - - + -
24B VAL* 3.8 28.9 - - + +
27B LEU* 4.0 22.4 - - + -
28B LYS* 3.5 41.5 - - + +
31B VAL* 5.0 3.1 - - + -
42B GLN* 4.6 2.9 - - - +
43B ARG* 1.3 73.9 - - - +
45B TYR* 1.3 55.5 + - - +
50B LEU* 3.6 6.4 - - - +
51B LEU* 2.8 37.3 + - + +
75B VAL* 4.0 13.5 - - + -
76B GLY 3.4 13.9 - - - +
77B LEU* 3.6 26.9 - - + -
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Residues in contact with TYR 45 (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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43B ARG* 3.4 50.8 + - + -
44B LEU* 1.3 77.1 - - - +
46B LYS* 1.3 60.3 + - - +
47B ASP 3.4 12.6 + - - +
48B ASP* 3.7 17.5 - - - -
49B GLN 3.3 3.8 - - - -
50B LEU* 3.5 38.0 - - + +
51B LEU* 4.1 4.7 - - - -
75B VAL* 3.4 9.7 - - - +
76B GLY* 2.8 38.6 + - - +
78B ALA* 4.0 15.6 - - + +
86B GLU 5.3 0.9 + - - -
88B LEU* 3.9 37.6 + - + +
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Residues in contact with LYS 46 (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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45B TYR* 1.3 72.1 - - - +
47B ASP* 1.3 81.8 + - - +
49B GLN* 2.9 33.0 + - + +
51B LEU* 3.7 18.7 - - + +
60B CYS* 3.1 29.4 - - + +
61B GLY* 4.6 11.8 + - - -
62B PHE* 3.9 29.7 - - + -
66B THR* 5.4 6.1 - - - +
74B THR 4.8 5.4 - - - +
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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