Contacts of the strand formed by residues 306 - 309 (chain B) in PDB entry 3KQG
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 TRP 306 (chain B).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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233B VAL* 3.8 10.2 - - + +
239B GLN* 3.0 24.7 + - - +
253B ILE* 3.7 20.9 - - + +
255B LEU* 3.3 24.9 - - + -
266B TRP* 3.5 32.1 - + - -
272B PHE* 4.3 4.9 - + - -
277B SER* 3.7 26.7 - - - -
280B PHE* 3.0 48.4 + + + +
281B TRP* 3.6 37.2 - + + -
282B ILE* 2.9 30.9 + - - +
285B GLU* 4.0 1.0 - - - +
297B ASN 3.1 7.9 - - - +
298B ILE* 3.9 13.0 - - + +
305B ALA* 1.3 76.0 - - - +
307B ASN* 1.3 60.1 + - - +
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Residues in contact with ASN 307 (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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281B TRP* 3.9 5.4 - - - -
282B ILE* 3.9 5.4 - - + -
285B GLU* 2.9 18.6 - - - +
293B GLU* 5.2 1.4 + - - -
296B GLY* 3.5 1.4 - - - -
297B ASN* 2.9 45.3 + - - +
299B LYS* 3.9 34.8 - - + +
305B ALA 3.6 0.8 + - - -
306B TRP* 1.3 75.6 - - - +
308B ASP* 1.3 71.2 + - - +
309B ALA* 3.8 10.1 + - - +
315B PHE* 6.3 0.4 - - - -
400B CA 2.4 26.3 - - - -
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Residues in contact with ASP 308 (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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257B LYS* 5.1 0.2 + - - -
264B TRP* 3.6 28.6 - - + -
281B TRP* 3.7 6.5 - - + -
285B GLU* 3.0 8.8 - - - +
286B PRO* 3.3 20.4 - - + +
287B ASN 3.2 2.1 + - - -
288B ASN* 2.8 29.1 + - - +
293B GLU* 2.6 21.2 - - - +
295B CYS 3.2 5.2 - - - +
307B ASN* 1.3 77.4 + - - +
309B ALA* 1.3 56.7 + - - +
400B CA 2.3 53.0 - - - -
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Residues in contact with ALA 309 (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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252B TRP* 4.0 11.4 - - + -
293B GLU* 3.7 8.5 - - - +
294B HIS 3.4 2.4 + - - -
295B CYS* 2.9 28.9 + - - +
297B ASN* 3.8 24.0 - - - +
307B ASN* 3.8 7.5 + - - +
308B ASP* 1.3 73.7 - - - +
310B PRO* 1.3 77.8 - - + +
313B LYS* 4.9 0.2 - - + -
315B PHE* 4.2 10.1 - - + -
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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