Contacts of the strand formed by residues 122 - 125 (chain B) in PDB entry 1IAX
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 VAL 122 (chain B).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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92B TYR 5.8 1.1 - - - -
120B ARG 3.6 9.6 - - - +
121B VAL* 1.3 80.5 - - - +
123B MET* 1.3 77.8 + - - +
289B ILE* 3.2 13.5 - - - +
290B ILE* 3.0 45.3 + - + +
298B VAL* 3.9 23.3 - - + +
301B ALA* 3.7 29.8 - - + +
302B ARG* 3.8 23.1 - - + +
305B SER* 3.9 5.4 - - - -
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Residues in contact with MET 123 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
91B ASP 4.4 1.3 - - - +
92B TYR 4.1 8.3 + - - +
93B HIS 4.1 3.1 - - - +
94B GLY* 3.7 25.1 - - - +
98B PHE* 3.8 23.8 - - + -
99B ARG* 6.5 0.4 - - + -
121B VAL* 5.8 1.6 - - + +
122B VAL* 1.3 84.4 - - - +
124B ALA* 1.3 64.7 + - - +
133B THR* 6.1 0.3 - - - +
288B GLY 3.3 5.6 - - - +
289B ILE* 4.7 0.7 - - + -
290B ILE* 5.3 1.5 - - - +
301B ALA 4.6 0.2 - - - +
305B SER* 3.1 29.5 - - - -
308B GLY 4.4 0.7 - - - -
309B LEU* 3.8 25.8 - - + -
310B VAL* 3.7 29.8 - - + +
315B GLN* 3.5 35.2 - - - +
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Residues in contact with ALA 124 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
123B MET* 1.3 79.1 - - - +
125B GLY* 1.3 55.7 + - - +
126B GLY 2.7 16.7 + - - +
129B GLY 3.6 4.3 - - - +
130B ALA* 3.3 40.8 - - + +
133B THR* 4.9 3.6 - - + +
286B ARG 3.4 5.0 - - - +
288B GLY 2.8 20.8 + - - +
289B ILE 4.7 0.2 - - - +
290B ILE* 4.7 6.1 - - + -
305B SER* 5.4 1.3 - - - +
308B GLY* 3.2 13.8 + - - +
310B VAL* 4.3 1.9 - - - +
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Residues in contact with GLY 125 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
306A SER 3.8 3.1 - - - +
307A PHE 3.3 22.9 + - - +
308A GLY* 4.9 2.5 - - - -
309A LEU 5.5 0.4 - - - -
124B ALA* 1.3 70.0 - - - +
126B GLY* 1.3 58.6 + - - -
128B THR* 3.7 1.6 - - - -
129B GLY* 2.9 23.5 + - - -
286B ARG* 3.2 28.4 + - - -
308B GLY* 3.2 13.7 + - - -
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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