Contacts of the strand formed by residues 288 - 291 (chain P) in PDB entry 1SXG
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 THR 288 (chain P).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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272P ILE* 3.3 27.3 - - - +
273P GLY 3.0 19.9 + - - -
287P LEU* 1.3 72.5 - - - +
289P SER* 1.3 57.8 + - - +
325P ILE* 4.4 1.4 - - - +
326P GLU 3.1 12.8 - - - -
327P PHE* 3.7 9.4 - - - -
328P ARG 3.0 33.4 - - - +
330P SER* 3.0 6.6 + - - +
331P THR* 3.0 41.3 - - + +
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Residues in contact with SER 289 (chain P).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
248P ASP* 2.9 26.2 + - - -
272P ILE* 4.2 1.1 - - - -
273P GLY* 3.5 9.6 - - - -
274P PHE 3.4 5.4 + - - -
276P ASN* 2.9 19.3 + - - +
280P SER* 3.7 16.4 - - - -
287P LEU* 3.4 4.8 + - - -
288P THR* 1.3 76.2 - - - +
290P VAL* 1.3 64.4 + - - +
291P VAL* 3.4 1.2 + - - +
325P ILE* 4.2 4.5 - - - +
326P GLU* 2.9 33.7 + - - +
328P ARG* 4.2 2.6 - - - +
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Residues in contact with VAL 290 (chain P).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
159P ILE* 5.2 0.2 - - + -
164P ALA* 3.9 24.9 - - + +
168P ALA* 3.9 12.6 - - + -
244P PHE* 4.3 0.2 - - + -
272P ILE* 4.5 1.3 - - + -
273P GLY 3.1 13.8 + - - +
274P PHE* 3.7 42.2 - - + -
275P ASP* 2.9 26.2 + - - -
276P ASN 3.1 5.5 + - - -
289P SER* 1.3 72.6 + - - +
291P VAL* 1.3 70.6 + - - +
323P HIS* 4.3 6.5 - - + -
324P ARG 3.4 12.3 - - - +
325P ILE* 3.8 16.4 - - + -
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Residues in contact with VAL 291 (chain P).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
276P ASN* 3.5 35.2 - - + +
290P VAL* 1.3 73.6 - - - +
292P GLN* 1.3 75.4 + - - +
293P PRO* 3.7 11.0 - - + +
294P MET* 6.3 0.2 - - + -
295P TYR* 4.5 6.3 - - + +
323P HIS* 3.6 24.9 - - - +
324P ARG* 2.6 63.2 + - + +
326P GLU* 3.8 20.6 - - + +
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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
------------------------------------------------------------
Atomic class I II III IV V VI VII VIII
------------------------------------------------------------
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