Contacts of the strand formed by residues 177 - 180 (chain B) in PDB entry 1QQJ
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 MET 177 (chain B).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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215A PRO* 5.7 3.4 - - + -
335A VAL 3.4 15.2 + - - +
336A ASN* 3.2 27.6 + - - +
175B ARG 3.8 1.1 + - - +
176B PRO* 1.3 74.1 - - - +
178B GLY* 1.3 60.6 + - - +
190B TYR* 3.6 43.7 - - + +
191B GLY* 3.4 21.1 - - - -
192B ALA* 3.7 17.5 - - + +
239B ILE* 4.0 3.3 - - - +
415B ALA* 3.7 18.8 - - + -
416B LEU* 4.4 29.4 - - + +
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Residues in contact with GLY 178 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
286A TYR* 5.3 0.2 - - - -
335A VAL* 4.3 15.5 - - - -
177B MET* 1.3 78.0 - - - +
179B GLN* 1.3 61.8 + - - -
180B MET* 3.9 4.3 - - - +
189B VAL 3.7 0.3 - - - +
190B TYR* 3.4 14.8 - - - -
191B GLY 3.0 32.4 + - - +
239B ILE* 4.0 12.1 - - - +
251B LEU* 6.0 1.3 - - - -
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Residues in contact with GLN 179 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
154A HIS* 3.1 29.6 + - - +
155A LEU* 3.4 15.9 - - + +
284A LEU* 3.8 20.2 - - + +
286A TYR* 3.2 30.1 + - + +
287A LEU* 4.1 1.0 - - - +
332A HIS* 5.1 3.3 - - + -
335A VAL* 5.5 0.6 - - - +
178B GLY* 1.3 72.0 - - - -
180B MET* 1.3 64.5 + - - +
188B PRO* 3.4 20.3 - - + +
189B VAL 3.3 8.1 - - - +
190B TYR* 4.6 0.7 - - - +
239B ILE* 3.7 24.9 - - - +
242B TRP* 2.8 35.3 + - + +
251B LEU* 6.2 0.6 - - - +
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Residues in contact with MET 180 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
178B GLY 3.9 6.5 - - - +
179B GLN* 1.3 75.5 - - - +
181B ARG* 1.3 60.4 + - - +
182B PRO* 3.5 9.5 - - + +
188B PRO* 3.3 2.8 - - - +
189B VAL* 2.8 50.3 + - + +
191B GLY* 3.4 28.5 - - - +
192B ALA 3.5 17.0 - - - +
193B CYS* 3.7 9.4 - - - -
194B ARG* 4.5 14.6 - - - -
238B ASP* 2.9 47.1 - - + +
239B ILE* 3.9 16.6 - - + -
242B TRP* 4.1 8.1 - - - -
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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