Contacts of the strand formed by residues 254 - 258 (chain I) in PDB entry 1DE4
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 ILE 254 (chain I).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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228I VAL* 4.0 19.5 - - + +
229I THR* 4.0 7.4 - - - -
230I GLY 3.9 13.2 - - - +
231I LYS 2.9 11.8 + - - +
232I LEU* 3.4 22.5 - - + -
233I VAL* 2.9 26.0 + - - +
253I SER* 1.3 74.4 - - - +
255I VAL* 1.3 70.5 + - - +
277I ILE* 3.0 18.8 - - + +
278I GLY* 4.0 7.9 - - - +
280I LEU* 4.2 15.3 - - + -
373I VAL* 3.5 37.2 - - + +
375I LEU* 4.2 8.3 - - + +
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Residues in contact with VAL 255 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
232I LEU* 3.9 2.5 - - - -
233I VAL* 3.3 10.3 - - + +
235I ALA* 3.6 29.8 - - + -
243I PHE* 4.0 12.8 - - + -
250I VAL* 3.3 37.2 - - + -
253I SER 4.9 0.2 - - - -
254I ILE* 1.3 82.0 - - - +
256I ILE* 1.3 66.5 + - - +
257I VAL* 3.8 9.4 - - + -
271I ALA* 4.5 5.6 - - + -
276I ALA* 3.7 11.0 - - + -
278I GLY 3.3 9.3 + - - +
279I VAL* 3.2 7.1 - - + +
280I LEU 2.8 24.8 + - - +
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Residues in contact with ILE 256 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
232I LEU* 3.8 31.0 - - + -
233I VAL 2.9 14.5 + - - +
234I HIS* 3.6 21.9 - - + -
235I ALA 3.2 16.8 + - - +
255I VAL* 1.3 74.3 - - - +
257I VAL* 1.3 72.4 + - - +
280I LEU* 3.3 14.1 - - + +
282I TYR* 3.6 32.5 - - + -
337I ILE* 4.3 16.4 - - + -
342I ALA* 4.5 4.9 - - + -
345I LEU* 5.3 0.7 - - + -
346I PHE* 4.0 19.7 - - + -
349I MET* 5.0 2.2 - - + -
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Residues in contact with VAL 257 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
234I HIS* 5.0 0.2 - - - -
235I ALA* 3.7 24.5 - - + +
237I PHE 4.1 8.3 - - - +
238I GLY* 3.7 22.2 - - - +
243I PHE* 5.0 1.1 - - + -
255I VAL* 3.8 8.3 - - + -
256I ILE* 1.3 81.2 - - - +
258I ARG* 1.3 59.7 + - - +
267I LYS* 3.9 27.6 - - + -
279I VAL* 4.0 15.7 - - + -
280I LEU 2.8 16.4 + - - +
281I ILE* 3.3 10.1 - - + -
282I TYR* 3.0 35.6 + - - -
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Residues in contact with ARG 258 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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234I HIS* 4.7 4.0 - - + -
236I ASN* 3.1 27.8 + - - +
237I PHE* 3.3 46.6 - - + +
257I VAL* 1.3 76.6 - - - +
259I ALA* 1.3 56.4 + - - +
267I LYS* 2.5 33.9 + - - -
281I ILE* 4.4 0.9 - - - -
282I TYR* 3.3 28.3 - - + +
284I ASP* 2.7 54.3 + - - +
287I LYS* 3.8 14.1 - - - +
357I TRP 3.0 23.6 + - - -
358I LYS 3.9 4.2 + - - -
359I THR* 3.3 25.1 + - - +
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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
------------------------------------------------------------
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