Contacts of the helix formed by residues 628 - 633 (chain C) in PDB entry 2VF7
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 ASN 628 (chain C).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
617C ALA* 3.8 7.9 - - - -
626C GLY 3.5 7.4 + - - +
627C TYR* 1.3 74.1 - - - +
629C ALA* 1.3 58.8 + - - +
630C GLY* 3.1 26.0 - - - +
631C ARG* 3.1 29.0 + - - +
632C PHE* 3.2 9.7 - - - -
----------------------------------------------------------
Back to top of page
Residues in contact with ALA 629 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
610C ASP 5.7 0.4 - - - +
613C ARG* 2.8 57.5 + - + +
614C LYS* 4.4 7.0 - - + +
617C ALA* 3.7 12.8 - - + +
628C ASN* 1.3 73.1 - - - +
630C GLY* 1.3 57.3 + - - +
631C ARG 3.1 4.9 - - - -
632C PHE* 3.2 11.5 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with GLY 630 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
613C ARG* 3.7 9.5 - - - +
628C ASN* 3.1 18.4 - - - +
629C ALA* 1.3 74.3 - - - +
631C ARG* 1.3 56.0 - - - +
632C PHE 3.1 3.6 - - - -
633C SER* 3.2 25.9 + - - +
636C VAL* 3.3 20.3 - - - +
637C LYS 5.2 0.7 - - - +
639C GLY 5.2 0.7 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with ARG 631 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
627C TYR* 3.0 58.5 + - + +
628C ASN* 3.1 32.1 + - - +
629C ALA 3.1 0.2 - - - -
630C GLY* 1.3 76.3 - - - +
632C PHE* 1.3 59.9 + - + +
633C SER 3.3 1.7 + - - -
637C LYS 6.1 0.2 - - - -
638C GLY* 3.7 20.4 + - - -
639C GLY* 3.2 34.0 - - - +
672C TYR* 4.4 0.2 - - - -
673C ASN* 3.8 5.7 + - - -
675C GLU* 2.9 35.8 + - - +
676C THR* 3.4 21.7 + - + +
----------------------------------------------------------
Back to top of page
Residues in contact with PHE 632 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
609C PHE* 3.5 4.5 - - - -
613C ARG* 3.2 33.8 - - + -
616C PHE* 3.8 40.6 - + + -
617C ALA* 3.7 18.4 - - + -
622C ALA* 4.0 4.9 - - + -
627C TYR* 3.9 25.8 - + + -
628C ASN 3.2 22.7 - - - -
629C ALA 3.2 8.7 + - - +
630C GLY 3.1 0.6 - - - -
631C ARG* 1.3 76.4 - - + +
633C SER* 1.3 57.1 + - - +
672C TYR* 2.7 29.0 + - - -
676C THR* 3.7 25.8 - - + -
679C VAL* 4.3 12.1 - - + -
686C ILE* 4.3 16.2 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with SER 633 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
609C PHE* 4.7 2.6 - - - -
613C ARG* 3.7 20.1 + - - +
630C GLY* 3.2 22.2 + - - +
631C ARG 4.3 1.0 - - - +
632C PHE* 1.3 79.6 - - - +
634C PHE* 1.3 58.5 + - - +
635C ASN* 3.1 21.8 + - - +
636C VAL* 3.7 30.3 + - - +
639C GLY* 5.0 0.3 - - - -
640C ARG* 4.0 9.9 + - - +
672C TYR* 4.0 3.7 - - - -
----------------------------------------------------------
Back to top of page
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) + - + + + + + -
------------------------------------------------------------
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