Contacts of the strand formed by residues 195 - 200 (chain A) in PDB entry 1Q6X
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 195 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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193A PRO 3.5 12.8 + - - -
194A GLU* 1.3 77.6 - - - +
196A VAL* 1.3 65.7 + - - +
197A ILE* 4.0 10.3 - - + -
206A VAL* 3.9 19.1 - - + -
207A LEU 3.3 16.8 - - - +
208A ASP* 3.8 12.5 + - - +
209A VAL* 4.0 3.3 - - - +
272A MET* 2.9 46.2 + - + +
275A ARG* 3.6 34.0 + - - -
276A CYS* 3.4 13.4 - - + +
277A ILE* 3.0 29.9 + - - +
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Residues in contact with VAL 196 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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131A ILE* 4.4 21.1 - - + -
134A VAL* 6.1 1.3 - - + -
135A LEU* 5.3 1.6 - - + -
195A HIS* 1.3 81.2 - - - +
197A ILE* 1.3 65.2 + - - +
198A VAL* 4.3 8.7 - - + -
205A PHE 3.7 0.3 - - - +
206A VAL* 4.0 2.4 - - - -
207A LEU* 3.0 63.8 + - + +
209A VAL* 3.9 17.0 - - + -
276A CYS* 4.2 0.7 - - - -
277A ILE* 4.3 17.5 - - + -
278A CYS* 3.6 23.6 - - - +
280A VAL* 4.9 2.7 - - + -
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Residues in contact with ILE 197 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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195A HIS* 4.0 19.1 - - + -
196A VAL* 1.3 73.6 - - - +
198A VAL* 1.3 64.4 - - - +
204A PHE* 3.8 32.1 - - + -
205A PHE 3.4 12.3 - - - +
206A VAL* 4.3 9.0 - - + -
272A MET 4.2 7.6 - - - +
273A ILE* 4.2 14.6 - - + -
276A CYS* 3.6 22.9 - - + -
278A CYS 3.2 4.9 + - - -
279A LEU* 3.4 26.1 - - + +
280A VAL* 2.9 25.6 + - - +
375A LEU* 4.3 19.3 - - + -
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Residues in contact with VAL 198 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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131A ILE* 5.1 0.4 - - + -
196A VAL* 4.3 6.1 - - + -
197A ILE* 1.3 78.8 - - - +
199A ALA* 1.3 63.6 + - - +
203A GLN 3.5 1.6 - - - +
204A PHE* 3.5 2.8 - - - -
205A PHE* 2.9 35.5 + - + +
207A LEU* 4.0 21.8 - - + -
225A LEU* 3.9 21.1 - - + -
228A ILE* 3.9 36.6 - - + -
280A VAL* 3.3 17.3 - - + +
282A LEU* 4.0 23.1 - - + -
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Residues in contact with ALA 199 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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197A ILE 4.1 1.2 + - - -
198A VAL* 1.3 70.9 - - - +
200A CYS* 1.3 62.0 + - - +
203A GLN 3.3 6.1 - - - +
204A PHE* 3.8 26.7 - - + -
279A LEU* 4.5 4.5 - - + -
280A VAL 2.8 13.0 + - - +
281A CYS* 4.2 8.3 - - - -
282A LEU* 2.8 30.0 + - - +
311A ASN* 3.2 29.6 + - - +
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Residues in contact with CYS 200 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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198A VAL 4.0 0.2 + - - -
199A ALA* 1.3 75.0 - - - +
201A CYS* 1.3 74.3 + - - +
202A ASN 3.0 0.4 - - - -
203A GLN* 2.8 38.2 + - - +
205A PHE* 5.2 0.9 - - + -
228A ILE* 4.4 10.3 - - + -
229A VAL* 4.4 17.5 - - - -
232A ALA* 3.7 22.7 - - + +
233A SER* 5.8 0.4 - - - -
282A LEU* 4.1 35.0 - - + -
311A ASN* 3.2 5.2 + - - +
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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