Contacts of the helix formed by residues 678 - 685 (chain B) in PDB entry 5IYB
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 THR 678 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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676B ALA* 3.4 1.6 - - - +
677B MET* 1.3 100.1 - - + +
679B PRO* 1.3 76.5 - - + +
680B ASP* 3.2 13.1 + - - +
681B ASP* 3.2 28.5 + - - +
682B LEU* 3.3 11.1 + - - +
696B CYS* 4.0 7.1 - - - -
700B PRO* 4.7 12.8 - - + -
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Residues in contact with PRO 679 (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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23B GLN* 3.4 47.6 - - + +
633B LEU* 4.1 21.1 - - + -
678B THR* 1.3 89.0 - - + +
680B ASP* 1.3 62.0 + - - +
682B LEU* 3.3 15.5 + - + +
683B GLN* 3.0 29.5 + - + +
696B CYS* 4.0 13.7 - - - -
697B GLU 4.9 3.4 - - - +
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Residues in contact with ASP 680 (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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678B THR* 3.1 13.6 - - - +
679B PRO* 1.3 77.8 - - - +
681B ASP* 1.3 57.0 + - - +
683B GLN* 3.1 11.5 + - - +
684B GLU* 2.9 27.4 + - - +
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Residues in contact with ASP 681 (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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676B ALA* 4.0 1.7 - - - +
677B MET* 4.0 20.1 + - + +
678B THR* 3.2 17.0 + - - +
680B ASP* 1.3 78.8 - - - +
682B LEU* 1.3 57.7 + - - +
684B GLU* 3.1 10.2 + - - +
685B LYS* 3.0 27.2 + - - +
688B ALA* 4.7 10.9 - - - +
693B TYR* 3.2 32.9 + - - -
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Residues in contact with LEU 682 (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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628B VAL* 4.1 13.9 - - + -
631B GLN* 3.7 31.5 - - - +
632B LYS* 4.4 3.1 - - - -
633B LEU* 4.1 38.1 - - + +
676B ALA* 4.8 4.3 - - + -
678B THR 3.3 9.8 + - - +
679B PRO* 3.4 14.1 - - + +
681B ASP* 1.3 77.6 - - - +
683B GLN* 1.3 61.2 + - + +
685B LYS* 3.0 29.7 - - - +
693B TYR* 3.4 39.7 - - + -
696B CYS* 5.2 3.6 - - - -
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Residues in contact with GLN 683 (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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20B ASP* 5.7 9.7 - - - +
631B GLN 5.4 3.1 - - - +
632B LYS* 5.5 7.3 - - - +
679B PRO* 3.0 18.5 + - + +
680B ASP* 3.4 12.1 - - - +
682B LEU* 1.3 79.2 - - + +
684B GLU* 1.3 63.1 + - - +
685B LYS* 3.1 4.7 + - - +
686B GLU* 3.7 19.6 + - - +
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Residues in contact with GLU 684 (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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680B ASP 2.9 12.9 + - - +
681B ASP* 3.1 16.1 + - - +
683B GLN* 1.3 72.3 - - - +
685B LYS* 1.3 50.1 + - - +
686B GLU* 2.7 20.1 + - - +
687B VAL* 2.8 43.1 + - + +
688B ALA* 3.4 8.1 + - + -
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Residues in contact with LYS 685 (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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631B GLN* 3.2 53.4 - - + +
681B ASP 3.0 10.3 + - - +
682B LEU* 3.0 26.7 - - + +
683B GLN 3.1 2.7 - - - +
684B GLU* 1.3 74.1 - - - +
686B GLU* 1.3 94.3 + - - +
687B VAL 3.0 3.2 + - - -
688B ALA* 3.3 29.4 + - - +
690B CYS 3.5 19.1 - - - +
691B SER* 4.3 14.5 - - - -
693B TYR* 4.7 2.2 - - + -
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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