Contacts of the strand formed by residues 28 - 31 (chain B) in PDB entry 2EZ9
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 HIS 28 (chain B).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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26B VAL* 3.5 13.3 - - - +
27B ASP* 1.3 105.9 + - + +
29B LEU* 1.3 64.2 + - - +
30B TYR* 3.2 25.3 + + - -
52B HIS* 3.1 21.8 - - + +
54B ILE* 4.2 9.0 - - + -
69B ASP* 2.8 33.9 + - - +
78B VAL* 4.5 5.2 + - - +
434B LEU* 3.8 30.2 - - + +
435B ASN* 3.3 25.4 - - - -
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Residues in contact with LEU 29 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
21B LEU* 4.5 11.2 - - + -
26B VAL* 4.8 2.0 - - + -
28B HIS* 1.3 76.2 - - - +
30B TYR* 1.3 62.5 + - - +
40B ILE* 6.0 1.3 - - + -
44B LEU* 3.9 32.3 - - + -
51B ILE* 4.1 17.5 - - + -
52B HIS 3.1 7.1 + - - +
53B TYR* 3.6 17.6 - - + +
54B ILE* 2.8 31.2 + - - +
78B VAL* 3.3 39.3 - - + +
80B PHE* 4.0 27.4 - - + -
107B LEU* 5.6 4.9 - - + -
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Residues in contact with TYR 30 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
28B HIS* 3.2 19.1 + + - -
29B LEU* 1.3 77.3 - - - +
31B GLY* 1.3 58.4 + - - +
54B ILE* 3.3 30.5 - - + +
56B VAL* 4.1 9.6 - - + -
62B GLY* 3.4 34.1 - - - +
65B ALA* 3.4 18.6 - - + +
66B ALA* 3.5 13.5 - - - -
69B ASP* 2.9 36.7 + - - -
78B VAL 3.2 13.7 + - - -
79B CYS* 3.2 3.9 - - - +
80B PHE* 2.9 33.6 + - - +
430B ILE* 4.3 4.7 - - + -
431B ALA* 3.7 8.8 - - - -
434B LEU* 3.7 24.7 - - + +
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Residues in contact with GLY 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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30B TYR* 1.3 76.9 - - - +
32B ILE* 1.3 60.7 + - - -
53B TYR* 2.8 24.9 + - - -
54B ILE 3.2 4.9 + - - -
55B GLN* 3.4 1.0 - - - -
56B VAL* 3.4 26.5 + - - +
59B GLU* 5.3 1.6 - - - -
62B GLY* 5.6 1.1 - - - -
80B PHE* 3.5 23.3 - - - -
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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