Contacts of the strand formed by residues 120 - 124 (chain I) in PDB entry 1W72
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 SER 120 (chain I).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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117I LYS* 5.4 4.9 + - - -
118I GLY 5.1 1.0 + - - -
119I PRO* 1.3 76.9 + - - +
121I VAL* 1.3 60.9 + - - +
122I PHE* 4.0 22.1 - - - -
143I LEU 3.4 1.2 - - - +
144I VAL* 3.7 0.7 - - - -
145I LYS* 2.8 41.2 + - - +
146I ASP* 5.4 2.9 - - - +
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Residues in contact with VAL 121 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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119I PRO* 4.6 4.3 - - + +
120I SER* 1.3 77.4 - - - +
122I PHE* 1.3 76.2 + - - +
142I CYS* 4.1 13.5 - - + -
143I LEU 3.3 9.0 - - - +
144I VAL* 4.7 4.9 - - + -
210I VAL* 4.0 33.4 - - + -
219I VAL* 3.6 41.8 - - + +
221I LYS* 3.9 34.2 + - + +
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Residues in contact with PHE 122 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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120I SER* 4.0 24.9 - - - -
121I VAL* 1.3 80.7 - - - +
123I PRO* 1.3 69.4 - - + +
124I LEU* 5.2 1.1 - - + -
142I CYS* 3.3 3.1 - - - -
143I LEU* 2.8 54.9 + - + +
145I LYS* 3.7 32.5 - - + -
221I LYS* 4.1 4.9 - - - -
121M SER* 3.6 10.8 - - - +
123M GLU* 3.9 14.1 - - + -
124M GLU* 3.6 42.8 - - + -
127M ALA* 4.7 10.3 - - + -
129M LYS* 6.1 1.6 - - + -
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Residues in contact with PRO 123 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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122I PHE* 1.3 88.4 - - + +
124I LEU* 1.3 60.0 + - - +
125I ALA* 3.9 2.4 + - + +
141I GLY 3.6 5.6 - - - +
142I CYS* 4.5 0.2 - - - -
221I LYS* 3.4 19.5 - - + -
222I LYS 3.7 20.9 - - - +
225I VAL* 3.8 18.6 - - + -
226I GLU 5.2 1.6 - - - +
228I LYS* 4.5 4.2 + - - +
121M SER* 3.1 23.7 - - - +
123M GLU* 3.5 39.7 - - + +
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Residues in contact with LEU 124 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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122I PHE* 4.2 1.1 - - + +
123I PRO* 1.3 78.6 - - - +
125I ALA* 1.3 60.2 + - - +
140I LEU* 3.6 4.2 - - - -
141I GLY* 2.6 45.0 + - - +
142I CYS 4.1 8.1 - - - +
143I LEU* 3.9 36.8 - - + +
188I SER* 4.4 8.1 - - - +
189I SER 5.4 0.2 - - - +
225I VAL* 3.4 6.7 - - - +
118M PHE* 3.6 48.5 - - + -
119M PRO 4.5 10.5 - - - +
121M SER* 5.0 6.3 - - - +
131M THR 5.7 1.1 - - - +
133M VAL* 4.2 20.0 - - + -
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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