Contacts of the helix formed by residues 676 - 680 (chain B) in PDB entry 4MS0
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 CYS 676 (chain B).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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532B THR* 3.5 31.6 - - - -
536B CYS* 3.8 29.8 - - - -
672B ALA 3.7 8.1 - - - +
673B CYS 3.2 19.9 + - - +
674B ASP 3.4 1.6 + - - -
675B LEU* 1.3 73.3 - - - +
677B SER* 1.3 65.5 + - - +
678B VAL 3.0 1.1 - - - -
679B THR* 2.5 32.2 + - + +
680B LYS* 3.7 16.9 - - - +
738B TYR* 3.4 10.0 + - - +
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Residues in contact with SER 677 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
524B TYR* 5.3 8.1 - - - -
529B HIS* 5.8 1.2 + - - -
532B THR* 4.8 10.1 - - - +
674B ASP 5.1 0.6 + - - -
675B LEU 2.8 3.7 + - - -
676B CYS* 1.3 80.0 - - - +
678B VAL* 1.3 55.8 + - - +
679B THR 3.2 1.9 + - - -
680B LYS* 3.6 15.2 + - - +
685B THR* 2.7 34.8 + - - +
688B THR* 3.9 30.3 - - - +
691B ASP* 4.7 6.6 + - - -
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Residues in contact with VAL 678 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
675B LEU* 3.1 16.6 + - + +
676B CYS 3.0 1.2 - - - -
677B SER* 1.3 81.4 - - - +
679B THR* 1.3 55.0 + - - +
685B THR* 5.3 0.7 - - + -
688B THR* 5.9 1.3 - - - +
692B ILE* 6.2 1.6 - - + -
726B GLN* 5.0 2.9 - - - +
729B PHE* 4.6 15.5 - - + -
730B TYR* 3.2 41.7 - - + +
734B ALA* 3.9 14.6 - - + -
738B TYR* 3.7 27.4 - - + -
755B CYS* 3.4 17.9 - - - -
758B ASN* 2.8 21.2 + - - +
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Residues in contact with THR 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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475B PHE* 4.7 1.6 + - - +
476B HIS* 3.8 14.4 + - - +
676B CYS* 2.5 26.7 + - - +
678B VAL* 1.3 80.0 - - + +
680B LYS* 1.3 67.6 + - - +
738B TYR* 3.5 37.9 - - + +
751B LEU* 3.6 44.4 - - + +
754B ALA* 3.1 23.8 - - - +
755B CYS* 4.3 0.4 - - + +
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Residues in contact with LYS 680 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
475B PHE 3.1 18.8 + - - -
476B HIS* 3.6 20.9 - - - +
477B PHE 3.0 22.7 + - - +
478B ASP* 4.9 4.3 - - + +
532B THR* 4.5 11.5 + - - +
535B HIS* 4.1 9.9 + - - -
536B CYS* 5.3 1.0 - - - +
676B CYS* 3.7 34.5 + - - +
677B SER* 3.7 15.0 - - - +
678B VAL 3.5 0.2 - - - -
679B THR* 1.3 84.5 + - - +
681B LEU* 1.3 65.4 + - - +
682B TRP 3.7 0.3 + - - -
684B VAL* 3.8 27.8 - - + -
685B THR* 3.4 12.2 + - - +
688B THR* 6.5 0.2 - - + -
754B ALA* 4.5 5.1 - - - +
758B ASN* 3.0 20.3 + - - +
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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
------------------------------------------------------------
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