Contacts of the strand formed by residues 348 - 353 (chain A) in PDB entry 1EXD
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 PRO 348 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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345A VAL* 3.3 17.7 - - + +
346A ILE 3.4 11.9 - - - +
347A ASP* 1.3 88.3 - - - +
349A VAL* 1.3 60.9 + - - +
386A TRP* 3.7 23.9 - - + -
387A ILE 3.0 7.2 - - - +
389A ARG* 4.0 16.6 + - - -
500A GLN 3.8 10.8 - - - +
501A GLY* 4.3 0.2 - - - -
502A PHE* 3.7 31.9 - - + -
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Residues in contact with VAL 349 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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348A PRO* 1.3 74.4 - - - +
350A LYS* 1.3 65.4 + - - +
351A LEU 3.3 1.6 + - - -
386A TRP* 3.6 2.7 - - - -
387A ILE* 2.8 46.7 + - + +
389A ARG* 3.4 47.8 - - + +
392A PHE* 5.4 0.4 - - + -
430A ILE* 4.2 18.6 - - + -
431A THR 3.9 15.3 - - - +
433A ILE* 3.8 18.8 - - + -
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Residues in contact with LYS 350 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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349A VAL* 1.3 70.3 - - - +
351A LEU* 1.3 72.8 + - - +
352A VAL* 3.9 6.5 - - + -
384A GLU* 3.9 32.5 + - - +
385A ILE 3.8 2.7 - - - +
386A TRP* 3.3 38.3 - - + -
431A THR 3.7 13.4 + - - +
432A THR* 3.1 32.3 - - - -
433A ILE 3.3 1.3 + - - -
461A ALA* 3.8 28.3 - - - +
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Residues in contact with LEU 351 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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349A VAL 3.3 2.8 + - - -
350A LYS* 1.3 75.5 - - - +
352A VAL* 1.3 85.1 + - - +
353A ILE* 3.6 32.5 - - + +
383A GLY 4.9 0.4 - - - +
385A ILE* 2.8 48.9 + - + +
387A ILE* 4.2 33.7 - - + -
403A LEU* 4.7 2.0 - - + -
417A ILE* 3.1 32.8 - - + -
433A ILE* 3.5 18.2 - - + +
435A CYS* 3.9 13.0 - - - -
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Residues in contact with VAL 352 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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350A LYS* 3.9 11.2 - - + -
351A LEU* 1.3 87.9 - - - +
353A ILE* 1.3 61.6 + - - +
354A GLU* 2.9 12.6 + - + +
383A GLY 3.1 6.1 - - - +
384A GLU* 3.2 35.7 - - + +
432A THR* 2.9 25.8 - - - +
433A ILE 3.1 4.4 + - - +
434A PHE* 3.4 39.5 - - + -
435A CYS 4.5 0.2 - - - -
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Residues in contact with ILE 353 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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351A LEU* 3.6 18.6 - - + +
352A VAL* 1.3 69.2 - - - +
354A GLU* 1.3 59.4 + - - +
355A ASN* 2.9 4.9 - - + -
356A TYR* 2.9 30.8 + - + +
381A PHE* 3.9 21.8 - - + -
382A SER 4.4 4.9 - - - +
383A GLY* 2.7 15.5 + - - +
385A ILE* 5.2 1.1 - - + -
411A LEU* 4.9 1.6 - - + -
417A ILE* 3.5 20.4 - - + -
435A CYS 3.2 15.0 - - - +
437A TYR* 3.2 61.5 - - + +
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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