Contacts of the helix formed by residues 85 - 89 (chain B) in PDB entry 4Q9U
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 LEU 85 (chain B).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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361A CYS* 3.1 60.2 - - + +
362A ALA* 4.3 1.6 - - - +
365A PHE* 3.4 34.5 - - + +
82B TYR* 3.9 16.2 + - + +
83B HIS 3.7 0.4 - - - -
84B SER* 1.3 100.8 - - - +
86B ALA* 1.3 65.7 + - - +
87B PRO* 3.0 11.5 - - - +
88B MET* 3.7 7.6 + - - +
89B TYR* 5.5 2.0 - - + -
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Residues in contact with ALA 86 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
26B LEU* 6.0 9.4 - - + -
76B THR* 6.1 3.1 - - + -
82B TYR 5.2 1.0 + - - -
83B HIS 5.0 8.5 - - - +
84B SER 3.6 1.0 - - - +
85B LEU* 1.3 75.6 - - - +
87B PRO* 1.4 70.8 - - + +
88B MET 2.9 2.6 + - - -
89B TYR* 3.1 29.1 + - + +
90B TYR* 3.2 24.2 - - + -
114B TRP* 6.3 2.0 - - + -
117B GLU* 4.9 7.9 - - - +
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Residues in contact with PRO 87 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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84B SER 4.3 8.7 - - - +
85B LEU* 3.0 8.9 - - - +
86B ALA* 1.4 90.1 - - + +
88B MET* 1.3 76.6 + - + +
90B TYR* 3.5 32.6 - - + +
91B ARG* 3.3 26.9 + - - +
117B GLU* 4.9 7.2 - - - +
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Residues in contact with MET 88 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
357A THR* 4.1 13.0 - - + +
361A CYS* 4.5 13.9 - - - -
74B TRP* 5.5 1.4 - - - -
85B LEU 3.7 3.6 + - - +
86B ALA 2.9 2.4 + - - -
87B PRO* 1.3 99.7 - - + +
89B TYR* 1.3 68.4 + - - +
90B TYR 3.2 1.6 - - - -
91B ARG* 3.4 43.9 + - + +
92B GLY 5.1 0.3 + - - -
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Residues in contact with TYR 89 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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315A PHE* 5.0 0.2 - - - -
316A LEU* 3.3 26.7 - - + +
354A TYR* 6.0 0.2 - - + -
357A THR* 4.0 10.0 - - + +
358A ASN* 2.9 44.2 + - + +
361A CYS* 4.7 14.0 - - + -
22B LYS* 5.3 0.7 + - - -
24B VAL* 4.5 5.6 - - + -
74B TRP* 3.5 61.1 + + + -
75B ASP 3.3 19.0 + - - -
76B THR* 3.5 31.9 - - + -
77B ALA* 4.8 0.9 - - + -
85B LEU* 5.5 0.9 - - + -
86B ALA* 3.1 22.8 + - + +
88B MET* 1.3 77.3 - - - +
90B TYR* 1.3 59.6 - - - +
91B ARG 3.6 0.2 + - - -
93B ALA* 4.5 1.4 + - - +
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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