Contacts of the strand formed by residues 270 - 275 (chain B) in PDB entry 4A0L
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 GLU 270 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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262B LEU* 3.8 21.9 - - + +
263B LEU 4.0 2.7 - - - -
264B LEU* 4.4 7.2 - - + -
268B GLY 3.7 2.2 + - - -
269B HIS* 1.3 82.8 + - - +
271B ILE* 1.3 62.6 + - - +
272B PHE* 4.5 2.6 + - - +
273B LYS* 3.5 42.6 + - - +
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Residues in contact with ILE 271 (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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250B GLN 5.5 0.2 - - - +
251B MET* 4.3 23.3 - - + -
263B LEU* 2.9 17.6 + - + +
264B LEU 3.8 4.3 - - - -
265B GLY* 3.4 31.6 - - - +
269B HIS* 3.4 27.1 - - + +
270B GLU* 1.3 75.3 - - - +
272B PHE* 1.3 66.6 + - + +
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Residues in contact with PHE 272 (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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261B LEU* 3.8 13.0 - - + -
262B LEU* 3.5 2.9 - - - +
263B LEU* 2.7 64.2 + - + +
270B GLU* 3.9 3.1 + - - -
271B ILE* 1.3 82.5 - - + +
273B LYS* 1.3 65.1 + - - +
274B GLU* 3.5 40.6 - - + -
276B LEU* 4.1 28.7 - - + -
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Residues in contact with LYS 273 (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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238B TYR* 5.6 4.0 + - - -
240B TYR* 5.6 4.0 + - - +
260B ARG* 3.7 40.0 - - + +
261B LEU 3.4 7.4 - - - +
262B LEU* 4.1 17.9 - - + -
270B GLU* 3.5 32.9 + - - +
272B PHE* 1.3 79.2 - - - +
274B GLU* 1.3 75.5 + - - +
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Residues in contact with GLU 274 (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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260B ARG* 4.2 7.6 - - - +
261B LEU 3.1 26.6 + - - +
272B PHE* 3.5 29.4 - - + -
273B LYS* 1.3 89.2 + - - +
275B LYS* 1.3 63.8 + - - +
276B LEU* 3.1 15.7 + - + +
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Residues in contact with LYS 275 (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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258B THR* 3.2 33.8 + - - -
259B GLY 3.6 8.1 - - - +
260B ARG* 3.7 22.3 - - + +
274B GLU* 1.3 74.4 - - - +
276B LEU* 1.3 64.3 + - - +
277B HIS 3.4 18.6 + - - +
278B LYS* 3.8 15.6 + - - +
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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
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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