Contacts of the strand formed by residues 267 - 270 (chain F) in PDB entry 1XFB
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 GLY 267 (chain F).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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24F VAL* 4.2 4.0 - - - -
228F LEU* 3.2 24.7 - - - +
229F LEU 3.2 14.4 + - - -
265F VAL* 3.4 6.3 - - - +
266F PRO* 1.3 86.0 - - - +
268F VAL* 1.3 64.9 + - - -
296F TRP* 4.1 2.2 - - - -
297F ALA* 3.5 18.2 - - - -
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Residues in contact with VAL 268 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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24F VAL* 5.5 0.2 - - - -
229F LEU* 3.2 14.8 - - + +
231F PRO* 3.3 37.0 - - + -
257F LEU* 3.8 25.8 - - + -
261F VAL* 4.9 5.6 - - + -
265F VAL* 5.2 0.4 - - + -
267F GLY* 1.3 75.3 - - - +
269F THR* 1.3 60.2 + - - +
270F PHE* 3.6 9.6 + - + -
296F TRP* 4.1 17.7 - - + -
297F ALA* 2.8 13.7 + - - +
298F LEU* 3.6 19.1 - - + -
299F THR 3.2 25.1 + - - +
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Residues in contact with THR 269 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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24F VAL* 3.8 25.8 - - + -
30F ILE* 3.9 19.5 - - + +
186F ILE* 4.5 3.6 - - - +
228F LEU* 4.2 13.0 - - + -
229F LEU 2.7 12.9 + - - +
230F LYS* 3.2 30.1 - - - +
231F PRO* 4.5 0.2 - - - -
268F VAL* 1.3 73.8 - - - +
270F PHE* 1.3 66.6 + - - +
299F THR* 3.8 11.4 - - - +
300F PHE 3.9 5.8 - - - -
301F SER* 3.2 22.5 + - - -
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Residues in contact with PHE 270 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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231F PRO* 3.6 21.5 - - + -
232F ASN 4.5 0.7 - - - -
233F MET* 3.6 38.8 - - + -
253F THR* 3.3 30.3 - - + -
257F LEU* 3.5 28.9 - - + -
268F VAL* 3.7 9.4 - - + -
269F THR* 1.3 73.3 - - - +
271F LEU* 1.3 59.8 + - - +
284F LEU* 4.2 6.3 - - + -
287F ILE* 3.8 23.3 - - + -
298F LEU* 4.0 23.6 - - + -
299F THR 3.1 27.0 + - - +
301F SER 2.7 31.5 + - - +
302F TYR* 3.5 7.2 - - + +
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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