Contacts of the strand formed by residues 542 - 545 (chain A) in PDB entry 4EGA
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 542 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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419A TRP* 4.4 19.1 - - + -
426A CYS 2.7 13.0 + - - +
427A ILE* 3.5 7.6 - - + +
428A VAL* 3.0 26.1 + - - +
513A HIS* 3.6 24.0 - - + +
515A ILE* 3.8 32.5 - - + -
520A LEU* 4.6 11.2 - - + -
523A HIS* 3.1 38.1 - - + +
524A ALA* 3.7 13.7 - - + -
539A PRO* 4.7 5.6 - - + -
541A LYS* 1.3 78.3 - - - +
543A VAL* 1.3 62.2 + - - +
544A ALA 4.7 0.2 - - - +
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Residues in contact with VAL 543 (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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265A ILE* 5.1 2.7 - - + -
269A ILE* 4.7 0.7 - - + -
428A VAL* 3.3 7.6 - - + +
512A VAL* 3.6 26.2 - - + -
513A HIS 2.9 11.2 + - - +
514A VAL* 3.8 16.7 - - + +
515A ILE* 2.8 29.5 + - - +
541A LYS* 4.1 1.6 - - + +
542A ILE* 1.3 72.9 - - - +
544A ALA* 1.3 64.3 + - - +
545A HIS* 4.0 2.9 + - + +
587A PHE* 3.7 31.0 - - + -
659A PRO* 4.0 30.5 - - + -
802A GOL 4.3 7.6 - - - +
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Residues in contact with ALA 544 (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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427A ILE* 5.6 0.7 - - + -
428A VAL 2.8 13.0 + - - +
429A PRO* 3.4 8.9 - - + +
432A ARG* 2.8 43.8 + - + -
515A ILE* 3.3 20.4 - - + +
516A GLY 4.6 5.4 - - - +
517A LYS* 4.6 3.1 - - - -
520A LEU* 4.2 16.2 - - + -
542A ILE* 5.0 1.1 - - + -
543A VAL* 1.3 72.0 - - - +
545A HIS* 1.3 61.7 + - - +
587A PHE* 3.5 3.9 - - - -
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Residues in contact with HIS 545 (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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258A GLY 5.3 0.9 - - - -
261A TYR* 3.5 20.9 - + + +
262A SER* 2.8 29.2 + - - -
265A ILE* 3.6 30.5 - - + -
432A ARG* 3.6 2.0 + - - -
514A VAL* 3.8 12.1 - - + -
515A ILE 2.9 30.3 + - - -
516A GLY* 3.4 17.9 - - - -
517A LYS* 3.2 25.6 + - - +
543A VAL* 4.0 3.4 - - + +
544A ALA* 1.3 77.1 - - - +
546A GLY* 1.3 59.5 + - - +
547A TRP* 3.3 29.3 + - + -
548A TRP 5.1 2.7 - - - -
549A THR* 5.0 0.7 - - - -
587A PHE* 4.3 8.5 - - - -
802A GOL 4.7 8.3 - - - -
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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