Contacts of the strand formed by residues 125 - 128 (chain A) in PDB entry 2W8I
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 THR 125 (chain A).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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119A TRP 3.7 0.3 - - - +
120A VAL* 3.5 2.8 - - - -
121A ASN* 3.0 27.9 + - - +
123A ASP* 2.7 27.6 + - - +
124A GLY* 1.3 81.8 - - - +
126A ILE* 1.3 66.6 + - - +
133A LYS* 3.0 32.4 - - + -
134A VAL 2.9 25.4 - - - +
135A GLN* 3.7 17.9 - - + +
136A VAL* 4.7 0.2 - - - -
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Residues in contact with ILE 126 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
93A LEU* 4.0 17.7 - - + -
95A VAL* 4.7 1.6 - - + -
118A ASN* 3.8 35.4 - - + +
119A TRP 3.3 24.9 - - - +
120A VAL* 3.8 14.4 - - + -
121A ASN* 4.6 2.2 - - - -
125A THR* 1.3 78.6 - - - +
127A PHE* 1.3 67.3 + - - +
128A TYR* 4.3 19.5 - - + -
132A GLY 3.6 0.2 - - - +
133A LYS* 3.2 6.2 - - - -
134A VAL* 2.8 39.7 + - + +
136A VAL* 3.9 15.0 - - + -
148A ILE* 4.5 14.4 - - + -
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Residues in contact with PHE 127 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
118A ASN* 3.6 20.6 - - - +
119A TRP 4.9 0.6 + - - -
121A ASN* 4.8 4.0 + - - -
126A ILE* 1.3 78.4 - - - +
128A TYR* 1.3 71.2 + - - +
129A PRO* 3.9 2.2 - - - +
132A GLY* 3.6 31.4 - - - -
133A LYS* 4.3 8.5 - - + +
98D TRP* 3.6 30.3 - + - -
145D ARG* 4.1 29.7 - - - +
159D PRO 5.2 0.9 - - - -
160D GLN* 3.5 26.0 - - + -
161D VAL 3.6 33.0 - - - -
162D ASP* 3.9 12.5 + - + +
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Residues in contact with TYR 128 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
95A VAL* 3.3 45.6 + - + +
97A VAL* 3.4 23.1 - - + +
103A LEU* 3.9 25.9 + - + +
118A ASN* 4.0 17.7 - - - -
126A ILE* 3.9 8.2 + - + -
127A PHE* 1.3 78.8 - - - +
129A PRO* 1.3 96.4 - - + +
130A TYR 3.6 0.2 + - - -
131A ILE* 3.9 25.1 - - + -
132A GLY* 2.6 42.3 + - - +
134A VAL* 4.4 6.1 - - + -
148A ILE* 4.6 6.3 - - + -
152A LEU* 4.2 20.0 - - + -
98D TRP* 5.5 1.3 - + - -
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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