Contacts of the strand formed by residues 19 - 23 (chain Q) in PDB entry 2A3W
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 19 (chain Q).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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11Q PHE* 4.1 3.4 - - - -
17Q THR 2.8 24.0 + - - -
18Q ASP* 1.3 75.4 - - - +
20Q VAL* 1.3 67.4 + - - +
21Q ASN* 3.3 30.7 + - - -
132Q VAL* 4.4 5.2 - - + -
133Q LEU 3.3 14.8 - - - +
135Q GLN* 3.8 13.0 - - + -
141Q GLY 5.1 1.8 + - - -
144Q PHE* 3.6 31.0 - + + -
193Q ARG* 2.9 63.1 + - + +
196Q VAL* 3.9 4.8 - - - +
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Residues in contact with VAL 20 (chain Q).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
9Q PHE* 3.8 21.8 - - + -
11Q PHE* 3.9 9.0 - - + -
19Q HIS* 1.3 78.3 - - - +
21Q ASN* 1.3 76.3 + - - +
22Q LEU* 3.7 18.1 + - + +
132Q VAL* 3.3 4.2 - - - -
133Q LEU* 2.9 41.4 + - + +
190Q TYR* 3.8 14.8 - - + -
191Q GLU 3.4 6.3 - - - +
192Q ILE* 4.1 9.6 - - + -
196Q VAL* 3.7 28.3 - - + -
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Residues in contact with ASN 21 (chain Q).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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19Q HIS* 3.3 22.0 + - - -
20Q VAL* 1.3 71.7 - - - +
22Q LEU* 1.3 63.0 + - - +
23Q ILE* 4.7 4.2 - - + +
130Q LYS* 5.6 6.0 - - + +
131Q ILE 3.4 4.7 - - - +
132Q VAL* 3.3 14.7 - - - +
141Q GLY* 5.0 2.6 - - - +
190Q TYR* 3.1 11.3 - - - +
191Q GLU* 2.9 62.0 + - + +
193Q ARG* 4.0 22.4 - - - +
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Residues in contact with LEU 22 (chain Q).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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9Q PHE* 4.6 0.2 - - + -
20Q VAL* 3.7 21.0 + - + +
21Q ASN* 1.3 77.7 - - - +
23Q ILE* 1.3 63.2 + - - +
24Q THR 4.0 1.4 + - - -
50Q PHE* 4.1 9.9 - - + -
129Q PRO 5.5 1.0 - - - +
130Q LYS* 5.5 0.3 - - - -
131Q ILE* 2.7 53.8 + - + +
133Q LEU* 3.7 39.7 - - + +
157Q LEU* 4.3 10.5 - - + -
183Q LEU* 4.1 23.8 - - + -
188Q LEU* 4.0 25.4 - - + -
189Q ASN 3.8 0.9 - - - -
190Q TYR* 4.1 1.8 - - + -
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Residues in contact with ILE 23 (chain Q).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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21Q ASN* 4.7 5.4 - - + +
22Q LEU* 1.3 76.3 - - - +
24Q THR* 1.3 70.1 + - - +
25Q PRO* 4.8 1.0 - - + +
182Q ILE 5.0 0.3 - - - +
183Q LEU* 4.1 8.6 - - - +
189Q ASN* 2.7 65.5 + - - +
190Q TYR* 4.4 2.2 - - - -
191Q GLU* 3.6 41.1 - - + +
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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