Contacts of the strand formed by residues 134 - 136 (chain B) in PDB entry 7A62
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 TRP 134 (chain B).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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21B VAL* 4.4 16.2 - - + -
24B ALA* 4.5 0.2 - - - +
25B LEU 3.2 28.6 + - - +
26B PRO* 4.4 2.5 - - + -
27B ASN* 3.8 18.6 - - - -
28B PRO* 3.3 38.0 - - + +
130B VAL 3.7 7.6 - - - +
131B LEU 3.2 20.6 + - - -
132B ALA 3.5 2.8 + - - -
133B ASN* 1.3 77.6 - - - +
135B LYS* 1.3 83.9 + - - +
136B LYS* 4.2 14.4 - - + -
143B LEU* 3.7 29.2 - - + -
148B MET* 3.9 10.3 - - + -
149B ASP 3.1 11.4 - - - +
150B VAL* 4.2 0.7 - - - +
151B LEU* 3.8 10.3 - - - +
165B LEU* 4.2 6.3 - - + -
168B LEU* 3.4 35.7 - - + +
172B ILE* 5.6 0.4 - - + -
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Residues in contact with LYS 135 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
28B PRO* 5.4 1.3 - - - +
30B GLU* 2.9 40.6 + - + +
134B TRP* 1.3 88.2 - - - +
136B LYS* 1.3 75.6 + - - +
137B LYS* 5.0 5.3 + - + +
148B MET* 3.2 7.4 - - - +
149B ASP* 2.9 52.4 + - + +
150B VAL 5.1 1.3 - - - +
151B LEU* 4.1 15.7 - - + -
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Residues in contact with LYS 136 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
20B GLU* 5.3 5.7 + - - -
27B ASN* 5.9 2.7 - - - +
134B TRP* 4.1 7.3 - - + -
135B LYS* 1.3 92.1 - - - +
137B LYS* 1.3 63.8 + - - +
138B ASP 3.8 12.1 - - - +
139B PRO* 3.1 33.3 + - + +
140B ASN 5.1 0.2 - - - -
141B LYS 2.7 29.3 + - - +
142B PRO* 4.1 7.0 - - - +
143B LEU* 3.7 38.3 - - + +
147B ASN* 3.3 11.4 - - - +
148B MET* 4.4 2.9 - - + +
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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
------------------------------------------------------------
Atomic class I II III IV V VI VII VIII
------------------------------------------------------------
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