Contacts of the helix formed by residues 643 - 647 (chain H) in PDB entry 6V3O
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 GLY 643 (chain H).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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601H TYR* 3.4 31.0 - - - -
640H GLY 3.6 4.7 + - - -
641H ARG 3.3 5.1 + - - -
642H GLY* 1.3 81.9 - - - +
644H THR* 1.3 63.1 + - - +
645H VAL* 3.2 4.9 - - - -
646H GLY* 3.0 21.5 + - - +
647H ARG* 4.1 6.2 + - - +
673H GLN* 4.5 2.1 + - - +
828H LEU* 4.6 2.4 - - - +
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Residues in contact with THR 644 (chain H).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
601H TYR* 4.3 11.6 + - + -
610H ARG* 4.9 6.7 - - - +
642H GLY 3.8 0.2 + - - -
643H GLY* 1.3 68.2 - - - -
645H VAL* 1.3 62.2 + - - +
646H GLY 3.0 9.4 + - - -
647H ARG* 3.2 24.8 + - - +
651H PRO 4.6 0.5 - - - +
652H THR* 4.3 3.1 + - - -
655H ALA* 3.5 25.7 + - - +
659H GLN* 4.9 4.0 + - - -
824H VAL* 4.0 35.1 - - + +
825H THR* 4.9 4.9 - - - +
828H LEU* 3.8 26.5 - - + -
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Residues in contact with VAL 645 (chain H).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
601H TYR* 4.4 4.5 - - - +
639H HIS* 3.6 41.1 - - + +
640H GLY 5.8 0.4 - - - +
643H GLY* 4.6 5.6 - - - -
644H THR* 1.3 77.6 + - - +
646H GLY* 1.3 58.8 + - - +
647H ARG 3.4 0.9 - - - -
652H THR* 3.0 21.3 - - - +
655H ALA* 3.9 12.6 - - + -
656H ILE* 3.8 27.6 - - + -
659H GLN* 3.8 26.9 - - + +
668H ILE* 5.5 2.0 - - + -
670H VAL* 3.5 23.4 - - + +
694H PHE* 4.0 4.5 - - - -
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Residues in contact with GLY 646 (chain H).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
643H GLY* 3.0 13.1 + - - -
644H THR 3.0 2.6 - - - -
645H VAL* 1.3 79.5 - - - +
647H ARG* 1.3 57.1 + - - +
648H GLY* 2.8 13.9 + - - -
670H VAL* 4.5 2.2 - - - -
671H THR 4.3 18.3 - - - +
672H VAL* 5.9 0.3 - - - -
673H GLN* 5.0 13.0 + - - +
676H VAL* 4.2 18.5 - - - +
694H PHE* 5.8 0.7 - - - -
968H ASN* 5.2 1.9 + - - +
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Residues in contact with ARG 647 (chain H).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
643H GLY 4.3 6.5 - - - +
644H THR* 3.2 22.0 + - - +
645H VAL 3.4 1.0 - - - -
646H GLY* 1.3 72.7 - - - +
648H GLY* 1.3 51.3 + - - +
649H GLY* 2.5 20.1 + - - -
650H GLY 3.2 8.8 + - - -
651H PRO* 3.6 38.5 - - + +
652H THR* 3.2 11.8 + - - +
676H VAL* 5.7 1.1 - - - -
824H VAL* 5.0 2.0 + - - +
827H ASP* 4.0 11.3 + - - +
828H LEU* 3.8 40.4 - - + +
831H MET* 3.4 44.1 - - - +
887H LEU* 4.2 9.1 - - - +
968H ASN* 3.7 22.2 - - - +
1001H GOL 3.4 19.7 + - - +
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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